Biodiv Sci ›› 2015, Vol. 23 ›› Issue (6): 725-732.DOI: 10.17520/biods.2015147
Special Issue: 生态保护红线专题
• Orginal Article • Previous Articles Next Articles
Junhui Liu1, Changxin Zou2,*(), Jixi Gao2, Su Ma1, Wenjie Wang1, Kun Wu3, Yang Liu1
Received:
2015-06-01
Accepted:
2015-08-17
Online:
2015-11-20
Published:
2015-12-02
Contact:
Zou Changxin
Junhui Liu,Changxin Zou,Jixi Gao,Su Ma,Wenjie Wang,Kun Wu,Yang Liu. Location determination of ecologically vulnerable regions in China[J]. Biodiv Sci, 2015, 23(6): 725-732.
指标 Index | 不敏感 Insensitive | 轻度敏感 Lightly sensitive | 中度敏感 Moderate sensitive | 高度敏感 Highly sensitive | 极敏感 Extremely sensitive | |
---|---|---|---|---|---|---|
土地沙化 Land desertification | 干燥度指数 Aridity index | ≤ 1.0 | 1.0-1.5 | 1.5-4.0 | 4.0-16.0 | ≥ 16.0 |
≥ 6 m/s起沙风天数 Days with wind speed ≥ 6 m/s (d) | ≤ 5 | 5-10 | 10-20 | 20-30 | ≥ 30 | |
土壤质地 Soil texture | 基岩 Bedrock | 粘质 Clay | 砾质 Gravel | 壤质 Loam | 砂质 Sandy | |
植被覆盖度 Vegetation coverage (%) | ≥ 80 | 60-80 | 40-60 | 20-40 | ≤ 20 | |
水土流失 Soil erosion | 降雨侵蚀力 Rainfall erosivity | < 25 | 25-100 | 100-400 | 400-600 | > 600 |
土壤可蚀性 Soil erodibility | < 0.27 | 0.27-0.42 | 0.42-0.52 | 0.52-0.62 | > 0.62 | |
坡度 Slope (°) | 0-8 | 8-15 | 15-25 | 25-35 | > 35 | |
植被覆盖度 Vegetation coverage (%) | ≥ 80 | 60-80 | 40-60 | 20-40 | ≤ 20 | |
石漠化 Rocky desertification | 碳酸盐出露面积百分比 Rate of carbonate rock outcropping areas (%) | ≤ 10 | 10-30 | 30-50 | 50-70 | ≥ 70 |
坡度 Slope (°) | ≤ 5 | 5-8 | 8-15 | 15-25 | ≥ 25 | |
植被覆盖度 Vegetation coverage (%) | ≥ 80 | 60-80 | 40-60 | 20-40 | ≤ 20 | |
赋值 Grade | 1 | 3 | 5 | 7 | 9 |
Table 1 Evaluation indices and classification of ecological environmental sensitivity
指标 Index | 不敏感 Insensitive | 轻度敏感 Lightly sensitive | 中度敏感 Moderate sensitive | 高度敏感 Highly sensitive | 极敏感 Extremely sensitive | |
---|---|---|---|---|---|---|
土地沙化 Land desertification | 干燥度指数 Aridity index | ≤ 1.0 | 1.0-1.5 | 1.5-4.0 | 4.0-16.0 | ≥ 16.0 |
≥ 6 m/s起沙风天数 Days with wind speed ≥ 6 m/s (d) | ≤ 5 | 5-10 | 10-20 | 20-30 | ≥ 30 | |
土壤质地 Soil texture | 基岩 Bedrock | 粘质 Clay | 砾质 Gravel | 壤质 Loam | 砂质 Sandy | |
植被覆盖度 Vegetation coverage (%) | ≥ 80 | 60-80 | 40-60 | 20-40 | ≤ 20 | |
水土流失 Soil erosion | 降雨侵蚀力 Rainfall erosivity | < 25 | 25-100 | 100-400 | 400-600 | > 600 |
土壤可蚀性 Soil erodibility | < 0.27 | 0.27-0.42 | 0.42-0.52 | 0.52-0.62 | > 0.62 | |
坡度 Slope (°) | 0-8 | 8-15 | 15-25 | 25-35 | > 35 | |
植被覆盖度 Vegetation coverage (%) | ≥ 80 | 60-80 | 40-60 | 20-40 | ≤ 20 | |
石漠化 Rocky desertification | 碳酸盐出露面积百分比 Rate of carbonate rock outcropping areas (%) | ≤ 10 | 10-30 | 30-50 | 50-70 | ≥ 70 |
坡度 Slope (°) | ≤ 5 | 5-8 | 8-15 | 15-25 | ≥ 25 | |
植被覆盖度 Vegetation coverage (%) | ≥ 80 | 60-80 | 40-60 | 20-40 | ≤ 20 | |
赋值 Grade | 1 | 3 | 5 | 7 | 9 |
敏感等级 Grade of sensitivity | 土地沙化敏感性 Land desertification Sensitivity | 水土流失敏感性 Soil erosion sensitivity | 石漠化敏感性 Rocky desertification | 综合生态敏感性 Comprehensive ecological Sensitivity |
---|---|---|---|---|
不敏感 Insensitive | 34.5 | 33.8 | 93.2 | 22.7 |
轻度敏感 Lightly sensitive | 41.3 | 37.7 | 1.5 | 27.1 |
中度敏感 Moderately sensitive | 11.7 | 13.7 | 3.4 | 22.0 |
高度敏感 Highly sensitive | 8.3 | 9.1 | 1.6 | 17.8 |
极敏感 Extremely sensitive | 4.3 | 5.8 | 0.4 | 10.4 |
Table 2 Area percentage of each ecological environmental sensitivity type in China
敏感等级 Grade of sensitivity | 土地沙化敏感性 Land desertification Sensitivity | 水土流失敏感性 Soil erosion sensitivity | 石漠化敏感性 Rocky desertification | 综合生态敏感性 Comprehensive ecological Sensitivity |
---|---|---|---|---|
不敏感 Insensitive | 34.5 | 33.8 | 93.2 | 22.7 |
轻度敏感 Lightly sensitive | 41.3 | 37.7 | 1.5 | 27.1 |
中度敏感 Moderately sensitive | 11.7 | 13.7 | 3.4 | 22.0 |
高度敏感 Highly sensitive | 8.3 | 9.1 | 1.6 | 17.8 |
极敏感 Extremely sensitive | 4.3 | 5.8 | 0.4 | 10.4 |
Fig. 2 Spatial distribution of ecologically vulnerable regions in China. (1) Edge of Gurbantunggut Desert; (2) Edge of Taklimakan Desert; (3) Middle and lower reaches of Heihe River; (4) Edge of Tengger Desert and Wulanbuhe Desert; (5) Mu Us Sandy Land; (6) Northern region of the Yinshan Mountains-Hunshandak Sandy Land; (7) Horqin Sandy Land; (8) Hulun Buir Sandy Land; (9) the Hengduan Mountains; (10) Loess Hilly gully region; (11) Three Gorges Reservoir area; (12) Dabie Mountain; (13) Luoxiao Mountain; (14) Huangshan Mountain; (15) Xianxialing Mountain-Wuyi Mountain; (16) the Tianshan Mountains; (17) Karst Areas in southwestern China; (18) Western part of ChangTang Plateau.
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