فصلنامه جغرافیای طبیعی
پیاپی 25 (پاییز 1393)

In order to evaluate the climatic potentials of Kerman province, the hourly weather data of temperature, relative humidity, and wind speed of the nine synoptic stations of the province were obtained for the existing data period( ranging from as early as 1957 to as late as 1993 up to 2005 to 2007). The hourly human comfort index of Physiological Equivalent Temperature (PET) was computed for each calendar month using the RAYMAN software. In the second step, the beginning, duration, and the end of the comfort period were determined for each station.
The results showed that the comfort period begins in January in the south and delays until March in the north. But it begins as late as April in the mountainous region of Baft. The comfort period ends in December in most of the province. The most uncomfortable climatic factor in the province is the temperature. That is why that the comfort period is shorter in the south than in the north. The length of the comfort period ranges from7 moths in the south to about 10 months in the north.

Flood is a natural phenomenon, which human being has experienced from very old times. In Iran, due to its very large area, several climates, and time and local density of Precipitations in most watersheds, there are many great floods of the country. In this study, run-off coefficient, maximum debit of flood, identifying the factors and elements that are effective on bloodiness, and zoning of the area of Leilan chai watershed based on its flood bearing are analyzed. The curve number method was used for this watershed. To do this, firstly, the needed data and information including the statistical situation of the area climates and satellite images were gathered Inputted to the GIS data system. Compiling these data and information by the SCS method and the CN of the watershed, The infiltration level and run-off volume were prepared.Finally, the zoning map of the annual flooding potential of the area were produced using weighting model and compiling the area Precipitation, hydrological groups of soil, slope level, land use, etc.

Land systems in mud field basin are in fact considered as forms segregation of land units for different users. Mud field land systems are separated into two systems and divided into 6 land units. This task is performed according to the land kind and field studies. Each of the land units is utilized for one specific purpose; there fore, in this research several studies are implemented to achieve these aims. Mud field is located in Neyriz County in Fars province. The used method in this research is field study. The purpose of the study is investigation and division of land units from lands kind and form point of view on one hand and efficient utilization of these units for various applications such as agriculture on the other hand. The achieved results indicate that the correct usage and application of mud field various lands refer to their type. During the research, these aims are ascertained.

Olive trees are able to grow in different types of soils due to high compatibility with a wide range of environmental conditions. Moreover, they can be planted in certain topographic locations (especially on steep slopes and hilly terrains) not suitable for the cultivation of other oilseeds. All these unique characteristics have caused olive to be considered as a strategic product. Therefore, this study attempted at the identification of prone areas for olive cultivation in Boyer-Ahmad Township. In this study, Environmental Factors of slope percentage, slope direction, and elevation extracted from digital elevation model were used. Subsequently, data layers were classified using effective growing requirements and assessments of Environmental conditions of olive cultivation and then the weight value of each zone was calculated. Final results of this research indicated certain northern and southern limits of the area are of very high proneness. Additionally, parts of the southwest area can be economical with regard to the integrated map of west and northwest Environmental Factors. On the contrary, northern and northeastern areas are not suitable for planting olive trees to produce good yields.

Nowadays the evaluation of bioclimatic conditions is considered as an efficient instrument by programmers in different regions. Calmness and health of human in natural environment has a direct relationship with climate situation such as temperature, humidity, sunlight and sunny time. Relative temperature and humidity is introduced as an index to survey comfort and convenience of human. This study aims to investigate comfort or discomfort of human based on bioclimatic models and indices of Becker, Terjung, nervous pressure and thermo hygrometric by using statistical data of synoptic station of Minab County for Tiyab rural district during 1990 to 2011. The results arising of this study show that Tiyab region in bioclimatic position during each year has from extremely hot to keen condition in different months. Considering the survey of climatic situation of this region, we can observe growth and development steps of this region by more speed in most of development and tourism planning of this region.

In this research the runoff coefficient and effective elements that affect the floods risk of Balekhlo basin were estimated and studied. In this area (Balekhlo River basin) to estimate the amount of runoff the curve number method (CN) were used. This method is the most common method to predict runoff volume. For this purpose, the data and information required includes: the maximum daily rainfall statistics, maps Density of vegetation, soil and Hydrologic Soil Groups were prepared and entered into Geographic Information System (GIS) environment. Combining these data with the model (SCS), maps (CN) basin, the amount of precipitation (S) and runoff (Q) was prepared. Finally, the hierarchical analytical process was used and six factors include: runoff, hydrological soil groups, slope, vegetation density, land use and drainage density were weighted using AHP method. Finally, the zonation map of flood potential produced with different return periods (5, 15, 25 and 50 years) by weighed layers. Results showed that about 40 to 47 percent of watershed areas, during periods of 5 to 50 years have moderate flooding potential.

The axis of Mollasadra dam of x=604171 and y=3390531 at 39 zone is located near Sedeh village in Tange Boragh basin 125 km far from northwest of Shiraz.
Three morphometric indices, namely the VF, Mountain Front Sinuosity and hypsometric integration Index have been measured in different parts of the catchment area in order to reveal the tectonic activities. Analysis of the obtained data shows an increase of tectonics around the dam. The Mountain Front Sinuosity increases from 1.1 to 3.1.
Results show the studied area is active in the view of tectonic activity and it is located at group 2 in active tectonic classify.

Tourism is a complex system that affects various aspects of human life (economic, social, cultural, environmental and physical). In this regard, the desert areas have attracted attention of the world as preferred regions for ecotourism development. Iran, as a country enjoying vast desert areas, is considered as one of the regions with the potentials to develop ecotourism in desert areas In Iran, there have not been specific strategies towards the development of tourism in the desert and there is no specific model in this regard. Therefore, this study aims to answer these questions: What are the priority strategies to achieve sustainable tourism development in Yazd desert areas? And what is the strategic model for sustainable tourism development in the desert areas of Yazd province. To answer these questions, the survey and strategic planning methods were used. The results of the study showed that tourism development strategies in the desert regions of Yazd province are in the defensive strategies group, that is, the strategies that are developed to reduce and eliminate weaknesses and threats. Moreover, management strategies have a higher priority over other strategies. In answer to the second question, it was found out that priority of management strategies over other strategies mean that other strategies for tourism development in desert regions are ignored because adopting a series of policies and strategies in the desert is possible in the light of an integrated tourism approach (Model) to tourism development plan.