Journal of Desert Research ›› 2023, Vol. 43 ›› Issue (5): 74-84.DOI: 10.7522/j.issn.1000-694X.2023.00029
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Wanfeng Su1(), Guangzhao Han1, Deli Ye2, Guangchao Cao1,3(
)
Received:
2022-11-23
Revised:
2023-04-12
Online:
2023-09-20
Published:
2023-09-27
Contact:
Guangchao Cao
CLC Number:
Wanfeng Su, Guangzhao Han, Deli Ye, Guangchao Cao. Remote sensing evaluation and driving force analysis of ecological environment in Gonghe Basin[J]. Journal of Desert Research, 2023, 43(5): 74-84.
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URL: http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2023.00029
判断依据 | 交互作用 |
---|---|
q(X1∩X2)<Min(q(X1),q(X2)) | 非线性减弱 |
Min(q(X1),q(X2))<q(X1∩X2)<Max(q(X1),q(X2)) | 单因子非线性减弱 |
q(X1∩X2)>Max(q(X1),q(X2)) | 双因子增强 |
q(X1∩X2)=q(X1)+q(X2) | 独立 |
q(X1∩X2)>q(X1)+q(X2) | 非线性增强 |
Table 1 Results of factors interaction
判断依据 | 交互作用 |
---|---|
q(X1∩X2)<Min(q(X1),q(X2)) | 非线性减弱 |
Min(q(X1),q(X2))<q(X1∩X2)<Max(q(X1),q(X2)) | 单因子非线性减弱 |
q(X1∩X2)>Max(q(X1),q(X2)) | 双因子增强 |
q(X1∩X2)=q(X1)+q(X2) | 独立 |
q(X1∩X2)>q(X1)+q(X2) | 非线性增强 |
年份 | 绿度NDVI | 湿度WET | 热度LST | 干度SI | 遥感生态 指数RSEI |
---|---|---|---|---|---|
2000 | 0.65 | 0.41 | 0.61 | 0.66 | 0.40 |
2010 | 0.68 | 0.43 | 0.54 | 0.54 | 0.46 |
2020 | 0.70 | 0.44 | 0.62 | 0.41 | 0.55 |
Table 2 Average values of indicators in Gonghe Basin from 2000 to 2020
年份 | 绿度NDVI | 湿度WET | 热度LST | 干度SI | 遥感生态 指数RSEI |
---|---|---|---|---|---|
2000 | 0.65 | 0.41 | 0.61 | 0.66 | 0.40 |
2010 | 0.68 | 0.43 | 0.54 | 0.54 | 0.46 |
2020 | 0.70 | 0.44 | 0.62 | 0.41 | 0.55 |
年份 | 主成分 | 绿度NDVI | 湿度WET | 热度LST | 干度SI | 特征值贡献率/% |
---|---|---|---|---|---|---|
2000 | PC1 | -0.64 | -0.36 | 0.44 | 0.52 | 69.39 |
2010 | PC1 | 0.65 | 0.31 | -0.36 | -0.59 | 72.99 |
2020 | PC1 | 0.77 | 0.18 | -0.30 | -0.53 | 78.64 |
Table 3 Principal component analysis from 2000 to 2020
年份 | 主成分 | 绿度NDVI | 湿度WET | 热度LST | 干度SI | 特征值贡献率/% |
---|---|---|---|---|---|---|
2000 | PC1 | -0.64 | -0.36 | 0.44 | 0.52 | 69.39 |
2010 | PC1 | 0.65 | 0.31 | -0.36 | -0.59 | 72.99 |
2020 | PC1 | 0.77 | 0.18 | -0.30 | -0.53 | 78.64 |
RSEI等级 | 2000年 | 2010年 | 2020年 | |||||
---|---|---|---|---|---|---|---|---|
面积/km2 | 比例/% | 面积/km2 | 比例/% | 面积/km2 | 比例/% | |||
差 | 0.16 | 0.00 | 14.72 | 0.06 | 25.36 | 0.10 | ||
较差 | 15 255.90 | 59.02 | 9 920.83 | 38.38 | 1 914.97 | 7.41 | ||
一般 | 9 085.20 | 35.15 | 11 565.40 | 44.74 | 15 284.50 | 59.13 | ||
良好 | 1 505.88 | 5.82 | 4 329.24 | 16.74 | 8 173.21 | 31.61 | ||
优质 | 2.96 | 0.01 | 20.06 | 0.08 | 452.26 | 1.75 |
Table 4 Ecological gradients and area changes in the Gonghe Basin from 2000 to 2020
RSEI等级 | 2000年 | 2010年 | 2020年 | |||||
---|---|---|---|---|---|---|---|---|
面积/km2 | 比例/% | 面积/km2 | 比例/% | 面积/km2 | 比例/% | |||
差 | 0.16 | 0.00 | 14.72 | 0.06 | 25.36 | 0.10 | ||
较差 | 15 255.90 | 59.02 | 9 920.83 | 38.38 | 1 914.97 | 7.41 | ||
一般 | 9 085.20 | 35.15 | 11 565.40 | 44.74 | 15 284.50 | 59.13 | ||
良好 | 1 505.88 | 5.82 | 4 329.24 | 16.74 | 8 173.21 | 31.61 | ||
优质 | 2.96 | 0.01 | 20.06 | 0.08 | 452.26 | 1.75 |
变化等级 | 2000—2010年 | 2010—2020年 | 2000—2020年 | |||||
---|---|---|---|---|---|---|---|---|
面积/km2 | 占比/% | 面积/km2 | 占比/% | 面积/km2 | 占比/% | |||
恶化 | 3.13 | 0.01 | 29.24 | 0.11 | 18.83 | 0.07 | ||
变差 | 185.00 | 0.72 | 168.45 | 0.65 | 58.10 | 0.22 | ||
不变 | 19 170.80 | 74.16 | 14 955.20 | 57.85 | 8 568.24 | 33.15 | ||
变好 | 6 380.38 | 24.68 | 10 615.50 | 41.07 | 15 774.10 | 61.02 | ||
优化 | 110.77 | 0.43 | 81.85 | 0.32 | 1 430.74 | 5.53 |
Table 5 Statistics on changs in ecological environment quality levels in the Gonghe Basin from 2000 to 2020
变化等级 | 2000—2010年 | 2010—2020年 | 2000—2020年 | |||||
---|---|---|---|---|---|---|---|---|
面积/km2 | 占比/% | 面积/km2 | 占比/% | 面积/km2 | 占比/% | |||
恶化 | 3.13 | 0.01 | 29.24 | 0.11 | 18.83 | 0.07 | ||
变差 | 185.00 | 0.72 | 168.45 | 0.65 | 58.10 | 0.22 | ||
不变 | 19 170.80 | 74.16 | 14 955.20 | 57.85 | 8 568.24 | 33.15 | ||
变好 | 6 380.38 | 24.68 | 10 615.50 | 41.07 | 15 774.10 | 61.02 | ||
优化 | 110.77 | 0.43 | 81.85 | 0.32 | 1 430.74 | 5.53 |
年份 因子 | 2000年 | 2010年 | 2020年 | |||||
---|---|---|---|---|---|---|---|---|
q值 | 排序 | q值 | 排序 | q值 | 排序 | |||
NDVI | 0.773 | 2 | 0.811 | 2 | 0.843 | 2 | ||
WET | 0.677 | 3 | 0.669 | 3 | 0.593 | 3 | ||
SI | 0.871 | 1 | 0.879 | 1 | 0.887 | 1 | ||
LST | 0.477 | 4 | 0.404 | 4 | 0.454 | 4 | ||
高程 | 0.390 | 5 | 0.307 | 5 | 0.187 | 7 | ||
坡度 | 0.171 | 8 | 0.099 | 9 | 0.057 | 9 | ||
气温 | 0.377 | 6 | 0.293 | 6 | 0.178 | 8 | ||
降水 | 0.217 | 7 | 0.230 | 7 | 0.325 | 5 | ||
夜间灯光强度 | 0.001 | 10 | 0.001 | 10 | 0.002 | 10 | ||
土地利用类型 | 0.091 | 9 | 0.163 | 8 | 0.192 | 6 |
Table 6 Results of single detection
年份 因子 | 2000年 | 2010年 | 2020年 | |||||
---|---|---|---|---|---|---|---|---|
q值 | 排序 | q值 | 排序 | q值 | 排序 | |||
NDVI | 0.773 | 2 | 0.811 | 2 | 0.843 | 2 | ||
WET | 0.677 | 3 | 0.669 | 3 | 0.593 | 3 | ||
SI | 0.871 | 1 | 0.879 | 1 | 0.887 | 1 | ||
LST | 0.477 | 4 | 0.404 | 4 | 0.454 | 4 | ||
高程 | 0.390 | 5 | 0.307 | 5 | 0.187 | 7 | ||
坡度 | 0.171 | 8 | 0.099 | 9 | 0.057 | 9 | ||
气温 | 0.377 | 6 | 0.293 | 6 | 0.178 | 8 | ||
降水 | 0.217 | 7 | 0.230 | 7 | 0.325 | 5 | ||
夜间灯光强度 | 0.001 | 10 | 0.001 | 10 | 0.002 | 10 | ||
土地利用类型 | 0.091 | 9 | 0.163 | 8 | 0.192 | 6 |
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