中国东、中、西三大地区水资源绿色效率时空演变特征与收敛性分析

孙才志, 马奇飞, 赵良仕

Temporal and spatial evolution of green efficiency of water resources in China and its convergence analysis

Caizhi SUN, Qifei MA, Liangshi ZHAO

表5 中国水资源绿色效率空间分布格局的标准差椭圆参数

Tab.5 Standard deviation ellipsometric parameters of spatial distribution pattern of green efficiency of water resources in China

年份 转角θ/° 面积/万km2 沿x轴的标准差/km 沿y轴的标准差/km 形状指数 2000 62.528 419.397 1037.183 1287.192 0.806 2004 51.437 400.363 1041.214 1224.016 0.851 2008 39.828 397.427 1028.129 1230.504 0.836 2011 49.833 384.932 1007.498 1216.224 0.828 2014 54.092 370.060 965.160 1220.526 0.791