摘要
根据2008年伊犁河流域土壤侵蚀调查数据,筛选影响土壤侵蚀的主要因子。通过新疆土壤侵蚀评价指标体系,制作各个因子的分级图,并利用空间分析的方法对各因子进行叠加运算,制作新疆伊犁河流域土壤侵蚀评价图。由评价结果可得:(1)伊犁河流域大部分为非土壤侵蚀区域,该区域植被盖度高,土壤质地为壤土、沙壤土,降水较丰富;(2)平原区到山区过渡的荒漠草场区易发生轻度土壤侵蚀;(3)昭苏县、特克斯县和尼勒克县等降雨量较大的高山石漠区土壤侵蚀程度较高;(4)霍城县境内的塔克尔莫呼尔沙漠具有沙质基质、植被覆盖度极低、降雨量少等特点,是本区土壤侵蚀较高的地方。
According to the survey data of the soil erosion in the Yili River Basin, the main factors affecting the soil erosion were selected. Through the Assessment Index System for Soil Erosion in Xinjiang,Classification Map of various factors were made;using the method of spatial analysis to overlay various factors, assessment map of soil erosion in the Yili River Basin were made. It can be obtained from the evaluation results： （1）the most of the Yili River Basin are non-soil erosion area, this region being with high vegetation cover;the soil texture are loam and sandy loam, abundant of precipitation; （2） desert grassland area between Plain and mountains prone to soil erosion; （3） the area with more rainfall in desert rock mountains in Zhaosu County,Tekes County and Nileke County and other counties is higher degree of soil erosion; （4） there are higher sand dunes,very low vegetation cover and less rainfall in the Takermohur Desert of Huocheng county,so soil erosion is high in this region.
出处
《防护林科技》
2013年第10期32-35,共4页
Protection Forest Science and Technology
基金
全球环境基金资助项目(4357(G))
关键词
伊犁河流域
土壤侵蚀
评价
the Yili River Basin
soil erosion
evaluation
