NDLI: Spatial and temporal change patterns of freeze-thaw erosion in the three-river source region under the stress of climate warming

Content Provider	Springer Nature Link
Author	Guo, Bing Luo, Wei Wang, Dong liang Jiang, Lin
Copyright Year	2017
Abstract	The three-river source region (TRSR), located in the Qinghai-Tibet Plateau in China, suffers from serious freeze-thaw (FT) erosion in China. Considering the unique eco-environment and the driving factors of the FT process in the TRSR, we introduce the driving force factors of FT erosion (rainfall erosivity and wind field intensity during FT period) and precipitation during the FT period (indicating the phase-changed water content). The objective was to establish an improved evaluation method of FT erosion in the TRSR. The method has good applicability in the study region with an overall precision of 92%. The spatial and temporal changes of FT erosion from 2000 to 2015 are analyzed. Results show that FT erosion is widely distributed in the TRSR, with slight and mild erosion being the most widely distributed, followed by moderate erosion. Among the three sub-regions, the source region of the Yellow River has the slightest erosion intensity, whereas the erosion intensity of the source region of Yangtze River is the most severe. A slight improvement can be observed in the condition of FT erosion over the whole study region from 2000 to 2015. Vegetation coverage is the dominant factor affecting the intensity of FT erosion in the zones with sparse vegetation or bare land, whereas the climate factors play an important role in high vegetation coverage area. Slopes>28° also have a significant effect on the intensity of FT erosion in the zones. The results can provide a scientific basis for the prevention and management of the soil FT erosion in the TRSR.
Starting Page	1086
Ending Page	1099
Page Count	14
File Format	PDF
ISSN	16726316
Journal	Journal of Mountain Science
Volume Number	14
Issue Number	6
e-ISSN	19930321
Language	English
Publisher	Science Press
Publisher Date	2017-06-18
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Freeze-thaw erosion Vegetation Precipitation Three-river source region Global warming Earth Sciences Geography Environment Ecology
Content Type	Text
Resource Type	Article
Subject	Earth-Surface Processes Geography, Planning and Development Geology Global and Planetary Change Nature and Landscape Conservation

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