Design Title: Land suitability evaluation for main crops, in honam, Lorestan Province.
2008
Seyyed Jalali, A`li Reza | Mohajer Milani, Parviz
This study is one of CP projectthe study area is about 14000 hectare in Honam catchments area in Lorestan province of Iran. It is between 48؛ 12´ to 48 ؛ 28´ east longitudes and 33؛ 45´ to 33؛ 51´ north latitude. Based on nearest synoptic station to the study area, Alashtar station, climate is semi-arid and cold. Soil temperature and moist regimes are thermic and xeric respectively. The maximum daily air temperature is 37.7 °C in July and the minimum daily air temperature is -4.2 °C in February. The annual rainfall is about 458 mm. The aim of this research is land suitability evaluation for irrigated and rainfed wheat, barley, chickpea, sugar beet, soya, beans and alfalfa based on climate, soil and landscape characteristics. The methodology is based on maximum limitation method. Climatic suitability in the study area for rainfed cultivation shows that wheat and barley and chickpea are marginally suitable , beans, soya, sugarbeet and alfalfa is non suitable. Considering that all crops can be cultivated without water limitation climatic suitability for irrigated cultivation is as following: wheat, barley, chickpea are highly suitable, beans moderatey suitable, alfalfa moderate suitable, soya and sugarbeet marginally suitable. Land suitability for irrigated crops is as following for different map units in the study area. Map units 12, 13, 14, 15, 16, 35, 1, 2, 3, 4, 9, 20, 21, 22, 23, 27, 28, and 29 are none suitable for all crops due to topography limitation. Map unit 5 is not suitable for alfalfa and beans, marginally suitable for soya, sugarbeet, wheat and barley and chickpea. Map units 10, 11, 31, 33 and 34 are moderatey suitable for alfalfa, beans, chickpea and barley, marginally suitable for soya and sugarbeet. Map units 25 and 30 are moderately suitable for alfalfa, beans, chickpea, barley and wheat, marginally suitable for soya and sugarbeet. Map units 6, 7, 8, 27 and 36 are marginally suitable for alfalfa, beans, chickpea, soya, sugarbeet, barley and wheat.
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