祁连山地区生态质量时空变化及驱动力
|
|
陈兵兵, 盖迎春, 宋忠航, 吴向楠, 艾宇, 杨映, 王生棠, 刘宇烁
|
Spatio-temporal evolution and driving forces of ecological quality in Qilian Mountains
|
|
Bingbing Chen, Yingchun Ge, Zhonghang Song, Xiangnan Wu, Yu Ai, Ying Yang, Shengtang Wang, Yushuo Liu
|
|
表4 祁连山地区生态质量等级变化
|
Table 4 Variation trend of ecological quality in Qilian Mountains
|
|
| 流域 | 指标 | 退化 | 不变 | 改善 |
|---|
| -2 | -1 | 0 | +1 | +2 | +3 | +4 |
|---|
| 石羊河流域 | 级面积/km2 | 8.00 | 1 769.68 | 31 308.29 | 6 969.70 | 152.00 | 0 | 0 | | 类面积/km2 | 1 777.68 | 31 308.29 | 7 121.70 | | 比重/% | 4.42 | 77.87 | 17.71 | | 黑河流域 | 级面积/km2 | 4.00 | 4 858.57 | 126 752.15 | 10 506.32 | 518.86 | 36.00 | 1.00 | | 类面积/km2 | 4 862.57 | 126 752.15 | 11 062.18 | | 比重/% | 3.41 | 88.84 | 7.75 | | 疏勒河流域 | 级面积/km2 | 3.00 | 5 343.43 | 89 325.31 | 6 293.84 | 208.14 | 1.00 | 0 | | 类面积/km2 | 5 346.43 | 89 325.31 | 6 502.98 | | 比重/% | 5.28 | 88.29 | 6.43 | | 柴达木盆地 | 级面积/km2 | 10.00 | 12 879.14 | 192 286.74 | 55 980.94 | 385.66 | 3.00 | 0 | | 类面积/km2 | 12 889.14 | 192 286.74 | 56 369.60 | | 比重/% | 4.93 | 73.52 | 21.55 | | 青海湖流域 | 级面积/km2 | 0 | 406.97 | 25 045.65 | 15 031.08 | 753.56 | 2.00 | 0 | | 类面积/km2 | 406.97 | 25 045.65 | 15 786.64 | | 比重/% | 0.98 | 60.73 | 38.28 | | 大通河-湟水 流域 | 级面积/km2 | 0 | 596.30 | 20 523.10 | 9 703.93 | 116.22 | 0 | 0 | | 类面积/km2 | 596.30 | 20 523.10 | 9 820.15 | | 比重/% | 1.93 | 66.33 | 31.74 | | 总计 | 级面积/km2 | 25.00 | 25 854.09 | 485 241 | 104 485.81 | 2 134.44 | 42.00 | 1.00 | | 类面积/km2 | 25 879.09 | 475 241.24 | 106 663.25 | | 比重/% | 4.25 | 78.19 | 17.55 |
|
|
|