Author Affiliations
1Hebei University of Economics and Business, Shijiazhuang 050061, China2Chongqing Jiaotong University, Chongqing 400074, China3606 Brigade of Sichuan Bureau of Metallurgical Geology & Exploration, Chengdu 610000, China;4Hebei Academy of Engineering Consulting, Shijiazhuang 050051, China5College of Land Resources and Rural-Urban Planning, Hebei GEO University, Shijiazhuang 050031, Chinashow less
Fig. 1. Location and topography of the Pan-Yangtze River Delta region
Fig. 2. Land use maps of the Pan-Yangtze River Delta region for 2010, 2005, and 2000
Fig. 3. Map of land use simulation in the Pan-Yangtze River Delta region
Fig. 4. Degrees of habitat deterioration in the Pan-Yangtze River Delta region from 1975 to 2010
Fig. 5. Map showing habitat degeneration in the Pan-Yangtze River Delta region from 1975 to 2010
Fig. 6. Map showing the habitat degradation degree classification of the Pan-Yangtze River Delta region from 1975 to 2010
Fig. 7. Map of habitat quality in the Pan- Yangtze River Delta region from 1975 to 2010
Fig. 8. Spatial distribution of habitat quality in the Pan-Yangtze River Delta region from 1975 to 2010
Threat factor | Longest threat distance (km) | Weight | Spatial decay type |
---|
Cultivated land | 4 | 0.6 | Linear decay | Construction land | 8 | 0.4 | Exponential decay | Unused land | 6 | 0.5 | Linear decay |
|
Table 1. Threat factors and their stress intensities
Land use type | Habitat adaptability | Threat factors |
---|
Cultivated land | Construction land | Unused land |
---|
Cultivated land | 0.3 | 0.0 | 0.8 | 0.4 | Forest land | 1.0 | 0.6 | 0.4 | 0.2 | Grassland | 1.0 | 0.8 | 0.6 | 0.6 | Water areas | 0.7 | 0.5 | 0.4 | 0.2 | Construction land | 0.0 | 0.0 | 0.0 | 0.1 | Unused land | 0.6 | 0.6 | 0.4 | 0.0 |
|
Table 2. Sensitivity of land use type to habitat threat factors