京津风沙源治理工程区生态环境质量及驱动力
王卫国, 谢欢, 冯国庆, 家淑珍

Ecological environment quality and driving forces in the Beijing-Tianjin Sandstorm Source Control Project area
Weiguo Wang, Huan Xie, Guoqing Feng, Shuzhen Jia
表2 京津风沙源二期治理工程区20002005201020152020年各指标主成分分析结果
Table 2 Results of PCA of four indexes in the BTSSCPA at the year of 2000200520102015 and 2020
年份NDVILSTWETNDBSI特征值贡献率/%
2000PC10.56-0.420.46-0.550.1684
PC20.51-0.15-0.84-0.070.029
PC3-0.38-0.89-0.080.230.015
PC40.54-0.040.270.800.002
2005PC10.55-0.400.51-0.520.2291
PC20.37-0.38-0.83-0.130.015
PC3-0.33-0.820.160.440.013
PC40.670.140.120.720.001
2010PC10.55-0.410.51-0.520.2090
PC20.39-0.30-0.85-0.180.015
PC3-0.23-0.830.080.490.013
PC40.700.210.110.670.002
2015PC10.56-0.420.49-0.530.2289
PC20.34-0.39-0.85-0.110.016
PC3-0.17-0.750.200.610.013
PC4-0.74-0.33-0.07-0.580.002
2020PC10.56-0.390.50-0.530.2190
PC2-0.330.560.76-0.060.015
PC3-0.27-0.650.410.580.014
PC4-0.71-0.33-0.12-0.620.001