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《Progress in Geography》 2011-05
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Assessment of Soil Salinization Sensitivity for Different Types of Land Use in the Ebinur Lake Region in Xinjiang

WANG Hong1,2,TASHPOLAT Tiyip1,2,XIE Xia1,2,FAN Yahui1,2,ZHANG Fei1,2,MAMAT Sawut1,2(1.College of Resources and Environment Science,Xinjiang University,Urumqi 830046,China;2.Key Laboratory of Oasis Ecology,Xinjiang University,Urumqi 830046,China)  
This paper chose the Ebinur lake region as the study area,and used the Landsat TM remote sensing data in 2007 and support vector machine(SVM) to classify land use types and saline soils.Then,we used the ArcGIS to calculate sensitivity index of soil salinization and built the sensitivity model of regional soil saliniza-tion by using sensitivity index of soil salinization and proportion of different land use types.We also used the Or-dinary Kriging to get a spatial distribution map of sensitivity degree of regional soil salinization.The following results are obtained.(1) The sensitivity index of soil salinization for different types of land use: unused land ur-ban and rural construction siteswatergrasslandforest landfarmland.(2) Extremely sensitive lands are main-ly distributed in the northwest and the southeast of the Ebinur lake swampland and part of the Ebinur Lake Wet-land Nature Reserve.Highly sensitive lands are distributed around the Ebinur Lake and the northeastern and southeastern parts of the desert near the edge of the Ebinur Lake,and most of these areas are unused with the ex-tremely sparse vegetation cover.Moderately sensitive lands are mainly distributed in the Ebinur Lake surface,oasis-desert ecotone and unused areas land of the inner oasis with mostly sparse grasses and unused lands.Slightly sensitive lands are distributed near the lake center and the transitional zone between the oasis and the Ebinur Lake,which is a transitional zone between the soil salinization sensitive areas and non-sensitive areas.The rests of the study areas,which are mainly distributed on the west side of the inner oasis of the Ebinur Lake,are not sensitive in general.
【Fund】: 国家自然科学基金项目(40861020 40961025 40901163);; 新疆自然科学基金项目(200821128)
【CateGory Index】: S156.4
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