基于 RSEI 的黄河上游流域生态环境质量变化分析

崔亚婷, 李嬛, 郑龙啸, 吴孟泉

Study of ecological environmental quality changes in the upper Yellow River basin based on remote sensing ecological index

Yating Cui, Huan Li, Longxiao Zheng, Mengquan Wu

表2 主成分分析结果

Table 2 Results of principal component analysis

年份 指标 PC1 PC2 PC3 PC4 2000 WET 0.109 0.142 0.318 0.930 NDVI 0.670 0.670 0.292 0.124 NDBSI -0.437 -0.011 -0.833 -0.338 LST -0.589 -0.727 -0.345 -0.062 特征值 0.045 0.009 0.003 0.001 贡献率/% 78.07 16.27 5.49 0.17 2007 WET 0.117 0.115 0.341 0.925 NDVI 0.651 0.616 0.416 0.148 NDBSI -0.501 -0.086 -0.789 -0.344 LST -0.557 -0.773 -0.294 -0.059 特征值 0.042 0.008 0.004 0.001 贡献率/% 76.31 15.77 7.70 0.22 2014 WET 0.152 0.335 0.316 0.874 NDVI 0.687 0.708 0.019 0.158 NDBSI -0.466 -0.332 -0.681 -0.455 LST -0.535 -0.524 -0.659 -0.055 特征值 0.046 0.015 0.005 0.002 贡献率/% 79.11 13.15 7.43 0.30 2021 WET 0.146 0.229 0.359 0.892 NDVI 0.690 0.646 0.280 0.165 NDBSI -0.504 -0.106 -0.751 -0.412 LST -0.498 -0.720 -0.477 -0.074 特征值 0.062 0.012 0.005 0.002 贡献率/% 77.81 15.43 6.54 0.22