Abstract
The Fars province is one of the most important areas in Iran in term of pre-history archeological studies. This region has good natural talent due to its diverse environmental infrastructures. During the Samnard’s archaeological exploration in the year of 1972 AD, according to the identification of polished red plain pottery in several sites of the Marvdasht plain and excavation of the Tel Bakun in layer 5A, an important period was identified in the Fars chronological sequence which called the Lapui period. Over the past few decades, due to limited recognition of the material-cultural characteristics of the Lapui period and the short duration of cultural continuity (3900-3400 BC), uncertainties such as the precise beginning and end of this period, livelihoods, socio-cultural mechanisms, specialized production and economic remains. The variety of cultural materials obtained has consisted of several layers of settlement, architectural structures, pottery, handicrafts and stone utensils, animal figurines, materials related to administrative and administrative techniques, ornamental and miscellaneous objects that have been studied and evaluated. The present study is related to the study of cultural and settlement materials obtained from the excavation of Lapui mound and its conclusion is a confirmation of the cultural-settling continuation of the 4th millennium BC and the Lapui period in Marvdasht plain which in this research has been addressed.
Keywords: Fars Province, Marvdasht Plain, Lapui Period, Excavation of Lapui Mound.

Introduction
The Kor and Syvand rivers are the important rivers in the Marvdasht plain that have been effective in establishment of settlements and sustaining of them. There are numerous mid- mountain plains along the course of these permanent rivers, the most important of which is the Bayza and Marvdasht plains. The beginning of archaeological activities and sequence identification of the Fars chronology is based more on the sounds of the Louis Vandenberg (Vandenberg, 1952: 54-75). The Lapui period is one of the most important phases of the pre-history chronology of this region and south of the Iranian plateau. This period was named by the characteristic pottery of layer A5 of Tal Bakun and derives from the name of the Lapui Village in the Zarghan area and was recorded in the Fars chronology. The cultural horizon of this period dates from about 3900 to 3400 BC and fills the gap between the cultures of the Bakun and Bansh.
Necessity and Purposes of Research: The importance and necessity of excavation of the Lapui Mound is actually the accumulation of cultural data within the archaeological deposits that have led to an understanding of objective relationship of the material and layers with each other, and so far this has not happened in the excavations of this cultural period in the Marvdasht plain. The main objectives of this study are to clear up the ambiguities mentioned above in the Lapui Period and to determine its cultural sequence in chronology of the South Zagros and Fars cultures in Marvdasht plain.
Research Question and Hypothesis: The most important question in this research is to study and analyze the cultural and settlement data which obtained from excavation of mound, in order to explain the 4th millennium BC of the Fars. To explain such a journey, the hypothesis of the achievements of excavation of this site can be stated that the diversity of cultural materials found in the various sections of architecture and the various cultural materials is categorical and noteworthy in some respects, identical and close to other similar cultural sites and some are unique.
Research Methodology: In this study, we tried to utilize the results of field research of Lapui Mound and comparative library studies. The most important method of data analysis in this research is based on statistical methods with comparison and analysis. By excavation of the site, significant quantities of cultural material have been obtained. Therefore, the identification of Lapui period and cultural features of this period on the Lapui Mound in the 4th millennium BC, based on the study and analysis of cultural data through field studies, documentary and interdisciplinary studies begin and has been dealt with.

Geographical Location of Lapui Mound
The Lapui Mound is located 3 kilometers south of the Kor River. Its height is about 2 meters, 140 meters’ length and 130 meters wide which cover an area of about 1.2 hectares. The mound is located 1573 meters above sea level (Abdi, 2016).

The excavated trenches in the Lapui Mound
The excavation focused on two trenches, T-1 in the middle of the mound toward to southwestern part of the mound and T.2 in the central part of the mound.

Material and Cultural Data from Excavation of Lapui Mound
During the excavation of Lapui Mound, a total of 6249 pieces of pottery with a total weight of 80.497 kg were obtained. According to the studies, the stone as raw material obtained in the excavation of Lapui Mound with a variety of heated stones, small stone decorative containers, artifacts and stone tools are mentioned.
Findings and evidence of politico-administrative and economic documents such as seals, seal impress, counting tokens, seal the container door and pieces of baked mud have been found in the settlement layers of the Lapui mound.
In all from excavation of the Lapui Monud from Trench 1 in layers 04, 05 and 06, five pieces of intact shale in type of bivalve and fragments of average length 6.5 cm (largest) and 3 cm (smallest), width 4.2 cm (largest) and 1.7 cm (smallest) obtained.

Conclusion
The most important achievement of excavation of the Lapui mound is the identification of archaeological deposits in the site that have been identified and classified into 20 layers and the settlement phases associated with that have been identified in the trenches and stratigraphic sound up to virgin soil. Cultural - material remains obtained from the excavated layers of the Lapui mound along with coherent architecture and variety of identified functions, including workshop, kitchen, residential, and uninterrupted settlement sequences identified in stratigraphy, as an integral part of studies Lapui mound has been great importance in the cultural explanation of the 4th millennium BC and the Lapui period of Fars. The variety of types of structures in the layers reflects the type of temporary settlement with a permanent architectural style, with a coherent and intensive architecture in the site. According to the studies, all the layers and cultural materials belonged to the Lapui period, which dates back to the 4th millennium BC. The results of study and analysis of the little cultural material obtained of Lapui mound indicate the presence of inhabitants of this site during the 4th millennium BC and coincide with the late Bakun period (new Bakun) and the beginning of the Lapui period until the middle of this period clearly and possibly later.

Abstract
Bavanat county, in Fars province, is very important in terms of mining activities, most of the active mines of Fars region are located in this county. Although various studies have been done by geologists in recent years in order to develop new mines as well as the role of mines in sustainable development, but in terms of archeology and ancient mining has been neglected, the only exception is the work of Emami and Bamshad in introducing only two mines. In 2015, an archaeological survey was conducted on Mazayjan and Markazi district which resulted in the identification of 200 sites from Neolithic to late Islamic period, in which 4 mines and 4 slag sites were identified. Since the survey of Bavanat county has not been fully done, more sites can be recognized by a comprehensive survey in this county by focusing on the identification of mines and sites related to ancient metalworking. The role of the ancient mining in the formation of settlements during different periods can also be investigated. The study of the relationship between natural resources and how they are extracted, used, exchanged and traded by ancient peoples will be fundamental and vital in archaeological studies. Recognizing the process of the metalworking industry will lead to clarification of the relationship between different stages in this cycle and a better understanding of the socio-economic effects of this industry in the context of cultural and historical developments in the Bavanat region. The current study tries to identify the evidence related to the cycle of metalworking industry by focusing on the results of the archaeological fieldworks in the Mazayjan district. What are the extracted metals and how was the extraction cycle? It seems that most of these mines were used to extract copper and iron metals. In this regard, the questions are about the background of the metalworking and mining industry in this area, what kinds of metal were extracted in this area, and how was the cycle of extraction and smelting process in the region, that appears the most of the mines have been exploited for copper and iron ore. Although little surface evidence has been found to date, a few pottery finds indicate the history of the Islamic and possibly Sassanid period.
Keywords: Fars, Mazayjan, Mining and Ancient Metallurgy, Smelting Technology.

Introduction
Bavanat county is located in the northeast of Fars province and consists of two Districts: central and Mazayjan. From the north and east, Bavanat is bordered by Abarkouh and Marvast in Yazd Province, by Sarchahan County in the south, by Safashahr County in the northwest. Khataban Mountain, with a height of 3482 m above sea level, has the highest altitude in the region, while the lowest altitude location is in the Marvast Plain with a height of 1670 m above sea level. Overall, the region has high altitudes and several water resources and drainage basins, such as rivers, springs, and streams. The most important water source in this region is the Bavanat River, which has a main role in the formation of the settlements. The Bavanat River flows from the northwest to the southeast. Two mountain ranges are located along other sides of the basin, and their arête is the water division line of this and other adjacent basins. The width of the valley is narrow, around 5 km, in the northwest, but widens to more than 10 kilometers in the southeast near Monj Village. In terms of geographical location, as this region is the border between the mountainous regions of Fars and desert regions of Yazd, the border separates two landscapes, making it particularly important. The first season of the survey was conducted in April and May 2015. It is attempted to determine the studied region according to natural geographical range without considering new political borders. To this end, Bavanat River Basin which is located in two central and Mazayjan parts of this county was fully investigated. Archeological research was carried out in a survey and intensive way to identify all sites and relics that reflect the activities of past human societies in the region.Four ancient mines and several places that the existence of metal slag indicates metallurgy extraction were identified as well. 
The study of the relationship between land resources and how they are extracted, used, exchanged and traded by ancient peoples will be essential in archaeological studies. In this regard, the study of metal exploration, extraction of ore in different periods is of particular importance. The increasing development of new mining activities will lead to the destruction of a large part of the ancient mines, in this instance; almost the ancient mines of Jian are destroyed and the Rubang mine is being destroyed, in this case, with proper documentation and introduction of mines, this ancient heritage can be protected as much as possible. Due to the importance of paying attention to ancient mines, the present study was conducted in order to identify and understand the production cycle of ancient mining and metalworking in the Mazajan district of Bavanat county.

Identified Traces
Stein conducted brief surveys and exploration in Bavanat (Stein, 1936). Furthermore, Helwing and Askari investigated a number of sites in Monj as part of the ICAR survey in the Marvsat Dam basin (Helwing, 2007). The importance of this issue motivated us to conduct archaeological surveys in the central district and Mazayjan Rural District of Bavanat in 2015. During the research for this survey, 200 sites that dated from the Neolithic period to the late Islamic era were registered. These sites include mounds and ancient sites, historical castles, historical places of worship, mosque, bridge, cemetery, mill, petroglyph, ancient mines, and slag site. Four ancient mines and several places that the existence of metal slag indicates metallurgy extraction were identified as well. 
Today, economically, mining-related activities in the Bavanat region have given it a privilege to be considered as a center in the country. Archaeological studies show that in the past, mining and metal mining have played a significant role in the economic and social structures and the formation of settlements.

Conclusion
Bavanat county has always been considered in terms of mining due to its geographical location, but so far it has not received much attention in terms of archeology and ancient mining. Archaeological survey conducted in 2015 and led to the identification of four mines and four slag sites, the main identified mines are related to copper and iron.
Extraction from mines includes two methods of underground extraction through tunnel digging and surface extraction through tracking of mineral lode in the ground. In Bavanat region, we only see surface extraction, so that miners have found natural lode on the ground and followed in a mine like Rubang, it has become a tunnel or the volume and width of the veins, such as Kan Gohar cave, are high, and by extracting them, today we are witnessing a change in the topography of this part of the mountain.
At the end, it should be noted that archaeological surveys in this area have not been completed in full, certainly with a comprehensive and targeted survey can identify many more mines and industrial sites in this area.

Abstract
A large part of Iran is located in dry areas, for this reason, various measures have been taken for water management, especially surface water. Dry weather, lack of rainfall, seasonality of river water and gradual drying of rivers, created the idea of water storage in the form of dams, aqueducts and cisterns in the human mind. The cisterns have different designs depending on the climatic and social conditions of each region. Also, the architecture of such buildings in different regions has been influenced by local architecture. Optimum management of low rainfall in a few days of the year in an area that due to the geological texture of the underground water table is insignificant and salty was a sign of the genius of the inhabitants of the Iranian plateau for water storage. With the progress of this tradition, especially during Islamic periods, the number of settlements in the region increased. One of the water storage structures is the cisterns, which were built along the flood path so that the surface water is directed to them after the rain and used for various purposes.  The question is, considering the scarcity of water in the region, is it possible to restore this structure in a modern way by reviving the past techniques? Due to the low but heavy rainfall in the south of the country, the ponds, in addition to providing an important part of the residents’ water, also act as floodgates, and with one rain at the end of the summer season and a few rains in the winter season, all the thousands of ponds in the south of the country are filled. But with the dependence of these areas on the water of the dams, in addition to the pressure on the country’s water resources, this historical tradition is gradually being forgotten. However, from the results of this research, based on the statistics, it seems that the restoration of the ponds -with government support and with a modern design based on historical patterns- will provide the possibility of water supply for the residents of the region.
Keywords: Barka, Ab-Anbar, Islamic Period, Fars, Hormozgan.

Introduction
The relationship between water and the world of existence can be defined from two perspectives: one is quantitative and experimental sciences and the other is spiritual issues of life and knowledge. Iran is considered one of the dry tropical regions of the world due to its special geographical position and very scattered unevenness’s and the influence of other factors. With this description, being located in the dry and water-scarce regions of the world, water has always had a high value and dignity in Iran, and for this reason, many advances and innovations have emerged in the field of water extraction and transportation. Among the most important of these developments, we can mention aqueducts, reservoirs, dams and weirs, as well as other types of structures and management operations that have been used. Therefore, the creative solutions of human connection with water have played a remarkable role in alleviating harsh natural conditions and in the meantime, the construction of water reservoirs has become popular in the extremes of Iran and water reservoirs have been built in many cities. Reservoirs with their interesting architecture are usually built in arid, desert and semi-arid areas to store rainwater more than in other places.
Iran’s governments in Islamic eras, with emphasis on issues related to hygiene and purity, built water reservoirs as an essential element in the lives of Muslims in or near mosques. And they became more common near them, with the evolution, development of agriculture and trade in this era, the construction of water reservoirs in villages led to the development of village, and as a result, the increase in population along the caravan roads led to the expansion of roads. It became commercial and accordingly it became commercial. At the same time with the development of Islam in different countries and the expansion of cultural exchanges, thanks to the blessing of the religion and the unified central government, construction techniques developed a lot. Construction of cylindrical-shaped tanks became common in Iran during this period due to the relatively low cost of construction and the greater resistance of its body against water pressure. Perhaps the method of making spherical or conical domes appeared in Iranian architecture from this period and for this reason. During this period, with the emergence of new cities and neighborhoods, reservoirs were placed next to mosques, schools, markets and government palaces like centralizing elements, and therefore it seems that reservoirs were a place for various social interactions. One of the prominent features of the city in Islamic era was the facilities such as mosques, bazaars, reservoirs, aqueducts, etc. The reservoir in the center of the neighborhood or city, in addition to providing water, is an excellent sign of There was a need for urban social life, for this reason, these buildings were sometimes built as a complex, such as a caravanserai complex, a reservoir, a guard house, a watchtower, and a refrigerator. The main passages or alleys sometimes branch off and lead to one or more houses. In addition to the possibility of reaching the neighborhood centers and the city center, the crossings also provide the possibility of quick and easy access to water reservoirs.

Conclusion
The lifestyle of Iranians, especially with the end of the Qajar period, became different from the past, one of which is fresh water piping. At the same time, the management of water resources in local ways caused the economic prosperity of the country based on the existing surface resources and underground water tables and the lack of pressure on them. Water cisterns have been a historical investment from the distant past, which, in addition to drinking, have also been used for industrial and agricultural purposes. Considering that currently one of the management problems is still the supply of drinking water in different regions of the country, it is suggested to provide part of the water problems of arid and semi-arid areas by restoring water reservoirs and creating examples of them in larger dimensions. Since the biggest management problem of water is its production, the past taught us that even in places where the underground water table is salty and there is no permanent river on the surface of the earth, fresh and pleasant water can be produced with some measures, and these methods will bring prosperity to the population and Roads have been expanded and the population has increased. Today, the experiences and techniques of the past should be used with today’s science to develop country and prevent consequences of dehydration and drought. Therefore, this article is a proposal in which the Ministry of Energy;  Ministry of Cultural Heritage, Tourism and Handicrafts; Ministry of Agriculture; Ministry of Roads and City Planning; Iran Water and Power Resources Development Company; Country Water and Wastewater Engineering Company; Iran Water Resources Management Company;  Organization of forests, pastures and watershed management of country; And, of course, local communities play a significant role in maintaining and building water reservoirs as water storage tanks.

Abstract
The interaction of cultures in prehistoric Iran has always been one of the most important and complex topics in Iranian archeology. Such connections in different regions of Iran show the relationships of cultures and their effects on each other. During the fifth and fourth millennia, these connections became more extensive and significant. During this period in the South Zagros region, between Fars, Chaharmahal and Bakhtiari (Bakhtiari region) and Khuzestan regions, close cultural ties were formed, which are more than anything else reflected in the pottery collections of Bakhtiari region. Alain Zagarel in his studies in different parts of Bakhtiari region points out that during this period, this region has received many cultural influences from Fars and Khuzestan regions. In this article, the cultural relations that took place during the chalcolithic Age in the Early / Middle / Late Shushan period of Khuzestan, the Early, Middle and Late Persian periods, as well as in the phases of Alexandria, Chelehgah, Afghan, R1, Lapoei, Shahrak and Borjoui and S17 in Bakhtiari region have been formed, discussed and tried to answer the question of whether there were cultural connections between these areas during the chalcolithic Age or not? According to the studies, it seems that there were cultural connections between these areas during this period. The point that should be mentioned here is that in this study, the cultural influences of Fars and Khuzestan regions on Chaharmahal and Bakhtiari have been considered. The effects of these cultures on different parts of Bakhtiari region are not the same, so that the northern regions of this province during this period were influenced by the cultures of Khuzestan region and southern regions, especially Lordegan city during this period were influenced by the cultures of Fars region.
Keywords: Interaction, chalcolithic, Bakhtiari, Fars, Khuzestan.

Introduction
One of the most important field works done in Bakhtiari region is the activities of Allen Zagarel and Hassan Rezvani during the years 1390-1389. The two main plains of Bakhtiari region, namely Khanmirza, are located 180 km south to southwest of Isfahan, at an altitude of 1800 meters and Shahrekord at an altitude of 2100 meters. Both plains are very fertile pastures, but due to their height, lack of surface water and good soil, they are not suitable for agriculture (Hool, 1390: 132). The sites identified in these areas provide useful information from the pastoral pattern of the pre-pottery period. We are indicating a period of prosperity in the Bakhtiari region. Based on these activities, the question that arises here is whether there was a connection between the Bakhtiari region with Persia and Khuzestan during the Copper and Stone Age? It can be said that the initial study of copper and stone period pottery shows the relationship and close proximity of regional pottery with copper and stone period pottery in Fars (Bakun A and B) And Khuzestan (Middle and New Shushan). However, it seems that the copper and stone pottery of the lords is more similar to the prehistoric pottery of Persia (Bakun A, B and Lepui).

Materials and Methods
Cultural interactions are one of the most important and complex issues in archaeology. In this research, we first tried to study all the sources in this field well, and the pottery related to each region was carefully examined and matched with each other so that we could provide a correct and accurate comparison. Among the important sources that were used in this regard were the reports of excavations, investigations and research activities that took place in these areas during the copper and stone ages. For correct understanding and accurate analysis of the data, it was tried to use the latest archaeological activities and also the latest scientific results published in these areas.

Article Text
The pottery collection of Bakhtiari region provides us with very good information about the Copper and Stone Age, through which the connection between this region and Fars and Khuzestan can be determined. Data from all three phases of the Copper and Stone Age have been found in the Bakhtiari region. Among these, we can refer to the interregional interactions of other regions of Bakhtiari region such as Dashte Farsan with Khuzestan and Fars, and although this has been the case in previous periods(Neolithic), as the evidence shows They show that this trend has significantly increased in the Copper and Stone Age. Currently, studies show that this region is very similar to Fars and Khuzestan. Currently, studies show that this region is very similar to Fars and Khuzestan.A noteworthy point about the settlements of the copper and stone period of Farsan plain is that in this period the southern areas of Farsan plain are very similar to Bacon pottery in Persia, while the pottery of the northern half of this plain is closely similar. They have new Middle Shushan pottery.

Discussion
Based on the conducted research, it can be said that the residents of Bakhtiari region were influenced by the residents of Fars and Khuzestan during the copper and stone ages. Considering that most of the settlements in this area belong to nomads, it can be said that this area was a bridge of communication between these areas during the copper and stone ages. The presence of pottery similar to the cultural materials of the late Neolithic and copper and stone of Fars and Khuzestan indicates the strong connection between the Fars plain and the mentioned areas, and one of the important reasons for this strong connection is the migration of nomads in the Fars plain and other highlands of Bakhtiari to these areas. The identified sites of this period, which were mainly in the form of temporary camps, also prove this claim.

Conclusion
In the Copper and Stone Age, we are faced with the dramatic emergence of yards in the Lordegan area. During this time, communication between the inhabitants of Lordegan and Fars and Khuzestan has increased. The reason for this claim is the collection of pottery that exists in this area. Another reason to prove this claim is the laboratory studies that have been done on the Lepui pottery of Chaharmahal and Bakhtiari province with Fars province. Based on the researches, it can be said that the inhabitants of Bakhtiari region have been influenced by the inhabitants of Fars and Khuzestan during the Copper and Stone Age. Given that most of the settlements in this area belong to the nomads, it can be said that this area has been a bridge between these areas during the Copper and Stone Age. Khosrozadeh also points out that the presence of pottery similar to late Neolithic cultural materials and copper and stone of Fars and Khuzestan indicates the strong connection of Farsan plain with the mentioned areas and one of the important reasons for this strong connection is nomadic migration in Fars plain and other heights. Bakhtiari knows of these areas, as the sites identified during this period, which were mostly temporary camps, also support this claim.

Abstract
The investigation and study of the plains and valleys between the mountains of South Zagros in Iran from a geographical and cultural point of view leads to a deeper understanding of how the archaeological cultures of those regions were formed and expanded; The southern parts of Zagros have their own geographical and cultural areas, while the northern regions include Abadeh, Eghlid, and Semirom; The Ghabr-e Keykha river basins and Semirom region are significant for the study of cultural interactions and areas of expansion of the archaeological cultures of Fars province because of their location at the intersection of the archaeological cultures of South Zagros. Therefore, we started the studies to investigate the prehistoric settlements and demographic fluctuations of the Ghabr-e Keykha river basin and to identify the oldest habitation in the central part of Semirom. The current research was based on a season of the archaeological survey with a habitat analysis approach in the central part of Semirom city (Figure: 1); After preparing the required maps, we surveyed the target area, and random sampling was done. Due to the low environmental capabilities, the sites were not in the dimensions and size of settlements in the central parts of Fars. It has been considered from sources of water and quality soil and living in the closest distance to rivers and reliable sources of water; It is interesting to note that, unlike in the central parts of Fars, there is no evidence of a sharp decrease in the number of enclosures and a change in the lifestyle from a sedentary farmer to a nomadism, and we are witnessing the size of Sites and the increase in population during the Banesh period.
Keywords: Archaeological Survey, Prehistory, Semirom, North Fars, Southern Zagros.

Introduction
Semirom county has an area of about 5224 square kilometers and an average height of 2400 meters above sea level, and its location is in the south of Isfahan province on the slopes of the Zagros highlands. This county is in the middle of South Zagros and the eastern slope of Dena highlands. What turned Semirom County into a distinctive locale in the prehistoric and later periods was its obvious location at the interface of the three major Iranian cultural zones, namely Fars to the south, Bakhtiari to the west, and the central plateau to the north. Thus, the region represents a significant focal point for exploring the cultural interactions of the cited zones. What is evident with regard to the regional archaeological investigations is the lack of systematic surveys, local chronology, excavated sites, and knowledge of the cultural evolutions in prehistoric times.  From another geographical point of view, Semirom lay in the southernmost part of Isfahan, that is the lowermost focal point of the central plateau cultures, wherein the penetration of the Bakun culture cannot be ruled out.
The basic question concerns the circumstances of settlements and population fluctuations at the prehistoric sites in Central District of Semirom, focusing on the factors of settlement size, water resources and arable lands, in particular during the Bronze Age, to determine whether there are comparisons with the central parts of Fars? Another question is: Given the location of the Semirom region at the convergence point of the cultures of the central Fars, are there any evidences of cultural interactions with the latter cultures? Furthermore, since at the current status of our understanding, grounded in the excavations of Tall-e Mash Karim (Sardari and Taheri 2015, 266; Taheri 2015, 233), and Gol-Afshan (Taheri 2009, 345; Taheri, 2020), the region’s earliest occupations date to the Bakun period, we were looking for information about potential earlier Paleolithic and Neolithic settlements. Judging by previous surface surveys, albeit their partial coverage of the region, and excavations, I assumed that the region was under the influence of Fars archaeological cultures, and indications for influences from the Bakhtiari region and the central Iranian plateau are absent. Thus, testing this hypothesis called for carrying out more careful intensive surveys in parts of Semirom.

Discussion
From the Middle Paleolithic period, we identified three open sites, two of which were created on the terraces dominating the rivers, and one site with a long distance from the permanent water resources at the exit of one of the northern valleys of the region is surveyed. Earlier, the settlement in this area was dated to the Bakun period. But it dates back to the Middle Paleolithic period, according to new surveys and evidence of human activities identified from the Paleolithic period. From the Neolithic period, we identified only one site related to the Shams Abad period, but with the beginning of the Bakun period(Chalcolithic), like Fars, we see an increase in settlements from one Neolithic site to seven sites in the Bakun period and four sites in the Lapui period. Various causes can be involved in this increase in population. First, with the warming of the region after the late Holocene, in a way that was not much different from the current climate of the area (Sadat Hosseini et al., 2015), better conditions were provided for the expansion of settlements and human habitation. We can see its appearance at the beginning of the Shams Abad period and the identification of one site. On the other hand, with the revelation of the Bakun culture in the Kur river basin, which had progressed in the economic and social contexts, more possibilities and abilities were obtained to exploit the environment, such as the expansion of irrigation canals began in the Shams Abad era and reached its peak during this period. They used more diverse animals in their food chain through hunting and animal husbandry. Although, like Fars, we see an increase of sites in the Bakun and Lapui periods. it seems that the Semirom region should be introduced as one of the peripheral regions of Fars and influenced by the archaeological cultures of this region with its cultural characteristics, in terms of dimensions and number of sites, livelihood patterns, and pottery motifs. That needs to be studied separately and consider its specific climatic and geographical conditions in the framework of the archaeological cultures of Fars.
 In the Banesh period, the number of sites is reduced to three. It seems that this region, unlike Fars, in this period, not only has not a noticeable decrease in population compared to the Lapui period, but we can see the stability of the population and the size of the sites. Also, observing the beveled rim pottery (Figure: 7) in this region is an important issue that doubles the need for a more detailed study of the entire county in this period. 

Conclusion
The results indicated the influence of environmental factors in the selection of sites, and factors such as distance and proximity to reliable water resources, fertile lands with easier access to water, and a suitable slope were the main factors for choosing a place of habitation. In all prehistoric times, most of the sites were very close to the main branches of the rivers (Map: 3); Most of them have settled in the middle of the plain, where the ground is less steep and has better soil. The reason that we identified no areas in the foothills of the mountains and at a greater distance from the rivers is because of the factors such as more difficult access to water resources due to the greater depth of the valleys in the initial parts, the lack of good soil, and the impossibility of exploiting water resources through canalization. There may be other factors involved which require more research to identify. In this lifestyle, the location should be chosen more carefully because the stay duration was longer, and the soil and water resources use was continuous and planned. In the end, based on the model that most archaeologists use to estimate the population and their interpretations, i.e., determining 100 to 150 people for each hectare in prehistoric periods (Alizadeh, 1392: 159), we predicted a population of over 200 people for the central part of Semirom in the Neolithic period, considering that we identified only one site with an area of 15,000 square meters. After that, during the Bakun period, the total area of seven sites was 27,500 square meters, and the estimated population was about 550 people. In the Lapui period, the total area of all the sites was 18,000 square meters, with an estimated population of about 350 people. In the Banesh period, the total area of all the sites was 50,000 square meters, which reached around 1,000 people with the increase in population. This analysis clearly shows the beginning of the increase of the sites with the beginning of the Shams Abad period. It continues to increase in the Bakun period. In the Lapui period, we are facing a 40% decrease in the number of sites. Again, in the Banesh period, the size of the sites increased a lot, and we estimated the largest population for this period.