新疆NDVI时空特征及气候变化影响研究
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慈晖, 张强
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Spatio-temporal Patterns of NDVI Variations and Possible Relations with Climate Changes in Xinjiang Province
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CI Hui,ZHANG Qiang
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表1 年均NDVI变化趋势 |
Tab. 1 Statistics of tendency of annual average NDVI |
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NDVI变化趋势 | 等级 | 面积(km2) | 占全疆比例/% | slope<-0.009 | 严重退化 | 42 016 | 0.87 | -0.009≤slope <-0.0045 | 中度退化 | 178 960 | 3.72 | -0.0045≤slope<-0.001 | 轻微退化 | 777 316 | 16.15 | -0.001≤slope<0.001 | 基本不变 | 2 959 714 | 61.50 | 0.001≤slope<0.0045 | 轻微改善 | 599 140 | 12.45 | 0.0045≤slope<0.009 | 中度改善 | 167 875 | 3.49 | slope≥0.009 | 明显改善 | 87 564 | 1.82 |
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