摘要
选取影响土壤风蚀的相关指标,运用GIS技术提取各指标数据,建立了RBFN(径向基函数网络)模型,并根据不同风蚀危险程度标准,选取了12个市县相关数据进行训练,确定了网络模型参数,对新疆87个市县的土壤风蚀危险度进行了评价。结果显示,东疆的吐鲁番哈密盆地为新疆土壤风蚀危险度极强区,南疆塔里木盆地、北疆的昌吉市—沙湾县沿线、富蕴县、福海县以及伊吾盆地是土壤风蚀的强度危险区,北疆西部、伊犁谷地和克孜勒苏柯尔克孜自治州的大部分市县为土壤风蚀的中度危险区,轻度危险区仅在阿勒泰市、伊犁谷地有零星分布。
Based on the previous research, this study constructed a RBFN （Radial Basis Function Network） model for soil wind erosion hazard assessment, quantified the various indicators influencing the soil wind erosion, extracted the spatial data using the GIS technology to assess wind erosion hazard in Xinjiang. By training of sample data from 12 counties with different levels of soil wind erosion, this study got the parameters of the model, and then evaluated the soil wind erosion hazard of the 87 cities and counties of Xinjiang. The result showed that wind erosion hazard is very severe in Turpan-Kami Basin of eastern Xinjiang; severe in Tarim Basin of southern Xinjiang, and from Changji City to Shawan County, Fuyun County and Fuhai County in northern Xinjiang; moderate in the western part of northern Xinjiang, and the most counties in Ili Valley and Kizilsu Kirgiz Autonomous Prefecture; and slight in few counties of Altai area and Ili Valley.
出处
《中国沙漠》
CSCD
北大核心
2010年第5期1137-1145,共9页
Journal of Desert Research
基金
国家支撑项目"水资源与水灾害空间信息服务系统研发"(2007BAH12B03)
"973"项目"干旱区绿洲化
荒漠化特征及其时空格局"(2009CB421301)
新疆主体功能区规划项目共同资助
关键词
土壤风蚀
RBNF
危险度
新疆
wind erosion
RBFN Model
wind erosion hazard
Xinjiang
