Reasonable exploitation from natural resources and organizing land use based on its ecological potentials, has an important role in the environmental management and preventing environmental degradation and having a sustainable development. Marvdasht town has been faced with immigration and the result of that is increasing population and changing land use. Regarding the climate and natural properties of the region especially the existence of an alluvial plain and permanent river, this region has great potentials for development. Therefore, for better organizing the land and agricultural activities, the ecological potential of the region and the land suitability of agricultural activities were considered to help sustainable development Planners This study for better performing the ecological model of Dr. Makhdoum in which the Weight and importance of parameters are not considered, has used the Fuzzy AHP and GIS and has identified and determined the suitable areas for agricultural activities within the area of Marvdasht County. The results of doing the Makhdoum ecological potential model with Fuzzy logic in Marvdasht County have showed the existence of all the seven categories of the model in the studied area. Also the results from the sensitivity analysis of the study shows that fuzzy base approaches can be used for increasing the accuracy in determining the land use of agricultural areas.

Perception of urban development process in urban planning and management of sustainable urban development is important. In this paper physical and spatial development of Varzaneh city is studied and, after recognition of its potentials and restricts with using Boolean model and overlaying in GIS and also calculation of requisite space for the added future population optimum strategies for future development is suggested. The method of the research is descriptive-analytic and method of data gathering is documental-library. In order for completion of data and monitoring urban development of Varzaneh, we have accomplished field study and group interview with Varzaneh people. The results of the research indicated that initially urban development of Varzaneh has been was self-growing and have happened around the center of the city, but because of existing agric cultural lands. It was impossible to develop the core and the new city along with the old city has been developed (they separate from each other by the river). In new developing plans direction of development is to the north. The results also signified that not only it’s not necessary to expand the city for future development even when population are threefold rather than now but also altitudinal development of city is possible due to the free lands, urban sprawl and one- floor buildings.

Regarding to the guiding plans in IRAN for five decades; it’s expected that such attempts in low crowded cities land to an exact planning which be able to quarantine the development of our central cities .The comprehensive planning of cities is mostly provided to boost the standards of urbanization, to control the development of cities, to coordinate different sections of city, and also to know the influential areas of them. In this study, we try to compare comprehensive and guiding plans of Dehaghan to evaluate applicability guiding plan in terms of population, framework and other functions. The research method is descriptive – analytical. The studies showed that the applicability in terms of population which is a foundation for other functions is 70% and about 7000 people are less than suggested. Except affairs such as residential , administrative - securing, religious ,commercial , green space, road net work and agricultural ,Functions other functions have not come into reality in terms of population ,and with regard to the their probability. And this reality represents the guiding plan inability to promote development in terms of the present planning. Increasing of migration because of limited opportunities for occupation, low motivation of people for farming as the result of widespread droughts and insufficient industries in the city; are some of the factors of the urban population decrease.

Hydro geomorphology is a branch of natural geography that deals with studying the shapes of ups-and-downs which are resulted from the function of the water and streams, especially the rivers. Recognizing and expressing the hydro geo morphological elements and their functions on the primary structural surface in the Kheir Abad basin and also providing some practical plans to recognize and manage the environment of the region are very important. This region is considered as a sub-region of the Zohreh River in Kohkiloyeh & Boyer Ahmad province and this river is a sub-basin of the Persian Gulf basin. The Kheir Abad River is located in the province of Kohkiloyeh & Boyer Ahmad in Gachsaran County (located in the northeastern part of the region) which is the only main streaming river of this region that originates from the various subordinate streams (often as the seasonal rivers) of the northern, northeastern, eastern and southern altitudes, and finally it reaches to the Zohreh River in Kohkiloyeh County. The followings are the purposes of the present study: analyzing the role of the hydro geo morph logical elements of the region regarding to capabilities and limitations of the natural prospects and landscapes, providing some suggestions and strategies and applications for the region in the framework of the capabilities and limitations to reasonably use the available resources. The present and applied method in this study includes a filed one that can be a suitable method to achieve investigative purposes and evaluate the hypotheses. Examining the physiographic, hydrological and hydro geo morphological elements, the geology, climatology, soil and flora and filed studies in the region with the help of determining and analyzing the influential elements in land-forming process, Geo morphological shapes which are present in the region and their developmental conditions reveal significant role of streams.