Dynamic analysis of ecological environment combined with land cover and NDVI changes and implications for sustainable urban-rural development: The case of Mu Us Sandy Land, China
Dynamic analysis of ecological environment combined with land cover and NDVI changes and implications for sustainable urban-rural development: The case of Mu Us Sandy Land, China
复制标题
结合土地覆被和NDVI变化的生态环境动态分析及其对城乡可持续发展的启示--以毛乌素桑迪为例
DOI：
10.1016/j.jclepro.2016.09.011
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发表时间：
2017-01-20
影响因子：
11.1
通讯作者：
Li, Wangjun
中科院分区：
文献类型：
--
作者：
Li, Yurui;Cao, Zhi;Li, Wangjun
近几十年来，气候变化和人类活动对生态环境产生了影响。基于土地覆被和归一化植被指数（NDVI）变化趋势的综合分析，研究毛乌素桑迪生态环境变化。结果表明，1990-2010年，研究区土地覆盖变化较为平缓，土地覆盖面积占总面积的10%。在2000 - 2014年期间，NDVI值在0.0076年（-1）左右表现出明显的增长。该速率低于陕甘宁地区（0.0117年（-1）），但大大超过三北防护林和黄河上游地区。通过对以土地覆被和植被指数为主要指标的生态绩效指数的分析，确定了四类网格进行精确的生态恢复。生态恢复工程为毛乌素沙地生态重建奠定了重要基础，2000年以来湿润化趋势是毛乌素沙地植被改善的主要气候因子（R = 0.687，P
Climate change and human activities have affected ecological environment in recent decades. This paper investigates the ecological environment change of the Mu Us sandy land based on a combined analysis of land cover and normalized difference vegetation index (NDVI) change trends. The results show that land cover changed moderately during 1990-2010, and areas experienced conversion accounted for 10% of the total land surface. The NDVI values show an evident increase at about 0.0076 year(-1) during 2000 -2014. This rate is lower than that of Shaanxi-Gansu-Ningxia region (0.0117 year(-1)), but greatly exceeds those of the Three-North Shelter Forest and the upper reaches of the Yellow River. Four categories of grids have been identified for accurate ecological restoration through analyzing the ecological performance index mainly based on land cover and NDVI indicators. The ecological restoration projects laid important foundation for ecological reconstruction in the Mu Us, while the wetting trend has been major climatic factors in vegetation improvement since 2000 (R = 0.687, P