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土壤侵蚀敏感性评价是生态环境敏感性评价乃至生态功能区划中一项重要的内容。选取典型红壤丘陵区的江西省兴国县为案例区,基于通用土壤流失方程的基本原理,借助ArcGIS和GeoDa软件,分析了研究区的土壤侵蚀敏感性及其空间自相关性。主要结果表明:①2005年研究区的土壤侵蚀敏感性等级以轻度敏感和中度敏感为主,所占面积百分比总计70.25%,高度敏感和极敏感区面积为364.57 km2;②在5%的显著性水平上,53.14%的敏感性观测区存在空间正相关,集中分布于兴国县的西部、南部、中部和北部,另外,46.86%的观测区存在空间负相关,分散在研究区的北部、南部、西部和中部。研究结果可为当地水土保持建设与生态环境建设规划提供参考。
Soil erosion sensitivity assessment is an important part of eco-environmental sensitivity assessment and even ecological function zoning. Based on the basic principle of common soil loss equation and using ArcGIS and GeoDa software, the soil erosion sensitivity and its spatial autocorrelation of the study area were analyzed. The main results show that: (1) The soil erosion sensitivity of the study area in 2005 was mildly sensitive and moderately sensitive, accounting for 70.25% of the total area and 364.57 km2 of highly sensitive and extremely sensitive areas; (2) In the sex level, 53.14% of the sensitive observation areas are spatially and positively correlated, and are concentrated in the western, southern, central and northern parts of Xingguo County. In addition, 46.86% of the observation areas are spatially negatively correlated and scattered in the northern and southern parts of the study area West and Central. The results can provide reference for the local planning of soil and water conservation and ecological environment construction.