西部典型地区荒漠生态系统健康评估——以尉犁县为例

采用遥感监测反演数据和社会经济统计数据,选取土壤侵蚀、地形和人类利用水平指标,研究构建尉犁县荒漠生态系统健康评价模型,初步评估了2000年尉犁县荒漠生态系统的健康状况。评估发现,尉犁县荒漠生态系统健康情况：健康Ⅰ级区生态类型占尉犁县生态系统面积的3.14%;健康Ⅱ级区生态类型占5.79%;健康Ⅲ级区生态类型占8.10%;健康Ⅳ级区生态类型占4.20%。研究总结得出了水资源的分布情况以及人类干扰是决定荒漠生态系统健康水平的主要因素。

Assessment of Desert Ecosystem Health in the Typical Regions of Eastern China

Based on information of RS and socio-economic,we selected soil erosion,terrain and LUCC indexes,the construction of desert eco-system health assessment model in Yuli County were studied,and the health condition of eco-system health assessment model in Yuli County in 2000 were evaluated preliminarily.We found that the first grade health desert-ecosystem covered 3.14% of total eco-system area in Yuli County;the second grade covered 5.79%;the third grade covered 8.10%;the forth grade covered 4.2%.The research concluded that the unbalanced distribution of water resources and impacts of human disturbance were the main factors for the healthy level of desert ecosystem.