基于RBFN模型的新疆土壤风蚀危险度评价

摘要/Abstract

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。

关键词: 土壤风蚀, RBNF, 危险度, 新疆

Abstract: 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.

Key words: wind erosion, RBFN Model, wind erosion hazard, Xinjiang

中图分类号:

S157

杨光华;;;包安明*;陈曦;刘海隆;黄莹;代述勇;. 基于RBFN模型的新疆土壤风蚀危险度评价[J]. 中国沙漠, 2010, 30(5): 1137-1145.

YANG Guang-hua;;;BAO An-ming;CHEN Xi;LIU Hai-long;HUANG Ying;DAI Shu-yong;. Wind Erosion Hazard Assessment in Xinjiang based on RBFN Model[J]. JOURNAL OF DESERT RESEARCH, 2010, 30(5): 1137-1145.

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