新疆沙漠化敏感性评价研究
- 中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京100085; 中国科学院大学,北京100049;中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京,100085
摘要: 以新疆为研究对象,采用复合气候因子、坡度、植被退化指数和土壤类型为评价指标,将研究区分为极敏感、高度敏感、中等敏感和一般敏感4个等级.结果表明:新疆整体沙漠化敏感性强.沙漠化敏感区域占总面积的54.70%,其中极敏感区域面积为21.96万km2,占总面积的13.23%,高度敏感区域面积32.92万km2,占总面积的19.83%;从沙漠化敏感性的空间分布来看,沙漠化敏感性区域主要分布在环塔里木盆地和亚欧大陆桥铁路沿线,新疆绿洲大部分处于沙漠化极敏感性状态下,绿洲安全受到沙漠化的严重威胁.
On Assessment of Sandy Desertification Sensitivity in Xinjiang
- 中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京100085; 中国科学院大学,北京100049;中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京,100085
Keywords:
- 沙漠化 /
- 敏感性评价 /
- 植被退化指数
Abstract: We take Xinjiang as a study case ,and choose complex climate factor ,slope factor ,vegetation degradation index factor ,and soil type factor to assess the sandy desertification sensitivity .Our results in‐dicate the area of sandy desertification sensitivity region is 908 ,100 km2 ,account for 54 .70% of the area in Xinjiang region .The area of extreme sandy desertification sensitivity regions ,high sensitivity sandy deser‐tification regions ,moderate sandy desertification sensitivity regions ,is 219 ,600 km2 ,329 ,200 km2 ,re‐spectively ,and account for13 .23% and 19 .83% of the total areas of Xinjiang region ,respectively .On the basis of the spatial distribution of sandy desertification sensitivity in the region of Xinjiang ,sandy sensitivi‐ty areas are highly concentrated along the Asia‐Europ Land‐Bridge and Tarim Basin .Oases locate in Xin‐jiang with an arid climate are suffered from severe sandy desertification .