JOURNAL OF PHYSICAL GEOGRAPHY
Year:2009 | Volume:1 | Issue:3|Papers Count:8

The fans are very suitable for humanities settlements and agricultures activities.Knowledge processes and characteristics these landforms for determine land use abilities are very important for stable development’s aims. In this research we studied geomorphological characteristics of Malekan plain in East of Uromiye Lake for land use planning. The evaluation landforms on this plain effective by Mardagh Chay River and water level changes of Uromiye Lake. Studies shows the level of ground salty waters is about 1.5 to 5 meters. For determine the agricultural land uses, we used zoning method by overlying data' s. The soil, geology, ground water qualities, ground water levels and slope and height of fans surfaces are important factors in this study. These factors classified in five group and then overlaying to gather by GIS software' s. The result shows 18% of lands are very low abilities and 16% low, 25% moderate, 26% good and 13% have very good abilities for agriculture. Land use map shows the 60% of lands have moderate qualitative, and this problem shows the effects of salty ground waters for essential factor in land use planning and agriculture activities in this area.

This research tries to display the effect wind companent producing the wheat product in the to stations of Kermanshah and Shiraz. In this research the statical duration between 1984-2006 for the climatical wind component, rain, relative humidity, temperature and sunshine duration and the produce of wheat product were utilized. Many methods in this research and technical antropy of Pearson correlation coefficient theory were used; Finally the findings in some occasions specially in the case of Shiraz stations relating the meaningful connection between component of wind velocity with the produce of the wheat production.

Saqqez, is located at specific geographical area with topography & climate systems of effective ecology has cool weather. Having long lasting frosts, it has special bioclimatological circumst ances. On the basis of the results derived from the effecten tive; it was determind that the weather in Saqqez is definitely cold about 54.9 percent of the year, and there is a mmoderate comfort in the shad only about 15.6 percent of the year and 29.8 percent of the time, one enjoy a good weather in the sun.Therefore, for the maximum utilization of this environmental conditions in designing the open spaces and passages; the different types of yard and passages were drawn on the diagram of optimum location of yard is east–south with an inclination in the direction of west-south. As for the streets and the passages, and lanes the optimum direction is south-west with 30º to take full advantage of 2 factors of sunlight, and temperature. This prevents cold wind currents and as a result long frost and ice cover over the surface of the passages and streets.

Kuhbanan fault system, as one of the major of intracontinental faults system in southeast of central Iran.This fault system caused most of earthquake evidences in North Kerman and south Yazd with strike–slip (reverse component) motion.Morphotectonic evidences along this fault system confirm recent activities.According to the geomorphic and kinematics data, Kuhbanan fault has divided into 38 segments.The mean calculated values of mountain front sinuosity (Smf) and%facet, V and Vf Ratios, for different segments of fault are 1.058, %87.57, 0.7466, 1.8399 consequently.Regarding to these geomorphic indexes, this region is a high tectonic activity region and denudation rate of about 3±1 mmyr-1 is suggested for this fault system.

Besides earthquake, flood and volcano, landslide is a disaster which causes considerable damages in mountains areas every year. Nowadays in countries involved with landslide problem, there is an increase trend to evaluation and zonation of risk and damage of this phenomenon. There different cause and in different ways for instability of slope such as topography, litology, climate and etc. In these research, Haeri-Samie model has been used for landslide risk zonation in Safiabad watershed in east of Golestan province. Hence, to analyze main causes of landslides, effective factors such as slope angle, litology, fault, road, and river, rainfall figures, rainfall intensity and earthquake was considered. Afterwards data layers for each of effective cause in landslide was prepared using GIS and then effective cause were quantified and weighted and Landslides was registered by field work and GPS. Analysis show that the watershed has not areas with extremely high risk class even the 6 registered landslides were in medium risk class moreover any landslide was not distinguished in high and very high risk zones. So, this model has not suitable efficiency in this watershed and its applicability needs more investigations and study.