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Improved evaluation method of the soil wind erosion intensity based on the cloud-AHP model under the stress of global climate change
- Source :
- Science of the Total Environment, Science of the Total Environment, 2020, 746, pp.141271-. ⟨10.1016/j.scitotenv.2020.141271⟩
- Publication Year :
- 2020
-
Abstract
- Under the stress of global climate change, soil wind erosion has become a major environmental issue in the Three-River Source Region (TRSR) of China. However, few large-scale studies have been conducted on soil wind erosion owing to the lack of investigational data or complex parameters. Moreover, the uncertainty and randomness in the weight determination process cannot be avoided using the traditional method. Thus, a cloud-analytic hierarchy process (cloud-AHP) model was proposed to construct a wind erosion intensity index model for the TRSR based on seven typical land surface parameters. The following results were obtained. (1) The cloud-AHP model can better eliminate the randomness and uncertainty in the weight determination process. (2) The proposed evaluation method of wind erosion intensity has better applicability in the TRSR with overall accuracy of 93%. (3) The overall wind erosion intensity in this region is moderate. The wind erosion intensity was the largest in the Yangtze River (0.55, moderate erosion) and smallest in the source region of the Lancang River (0.50, mild erosion). (4) Significant differences are observed in the influences of various vegetation types on wind erosion intensity. Bare land exhibits the highest wind erosion intensity, whereas a coniferous forest exhibits the smallest. Moreover, grassland is a key control zone of soil and water conservation because it has the largest spatial heterogeneity of internal erosion intensity. These results can provide data and technical support for preventing and controlling soil erosion and protecting the environment in the region.
- Subjects :
- geography
Environmental Engineering
geography.geographical_feature_category
010504 meteorology & atmospheric sciences
Global warming
Soil science
15. Life on land
010501 environmental sciences
01 natural sciences
Pollution
6. Clean water
Grassland
Spatial heterogeneity
13. Climate action
[SDE]Environmental Sciences
Erosion
Environmental Chemistry
Environmental science
Internal erosion
Aeolian processes
Soil conservation
Waste Management and Disposal
Intensity (heat transfer)
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 18791026 and 00489697
- Volume :
- 746
- Database :
- OpenAIRE
- Journal :
- The Science of the total environment
- Accession number :
- edsair.doi.dedup.....df2e0af68eb01775937831244452d64a