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	Soil erosion rates and characteristics of typical alpine meadow using (137)Cs technique in Qinghai-Tibet Plateau
	Shao Q. Q. ; Xiao T. ; Liu J. Y. ; Qi Y. Q.
	2011
关键词	three Rivers headwater soil erosion alpine meadow (137)Cs nuclide tracing wind erosion mongolian plateau tracing technique (cs)-c-137 catchment movement area
英文摘要	Alpine meadow is the predominant ecosystem in Qinghai-Tibet Plateau. The firm turf of alpine meadow formed by sub-surface anfractuous roots can be effective in conserving water and soil. Alpine meadow is a primary contributor to the Chinese Water Tower. For quantitative assess anti-erosion ability of alpine meadow, this paper selected three typical meadow slopes with > 60% vegetation coverage to evaluate soil erosion rates using (137)Cs. The results showed that (1) soil erosion intensity of typical alpine meadow was slight to light. Erosion rates were 464 t km(-2) a(-1) in Malong Village, 415 t km(-2) a(-1) in Yeniugou Town and 875 t km(-2) a(-1) in Zhenqin Town respectively; (2) soil erosion rates were correlated negatively with vegetation coverage, and the relationship was clearer at the slope scale than plot scale; (3) the relationship between soil erosion and vegetation coverage showed that vegetation coverage was a predominant factor in retaining soil and water on slopes. With complete turf and high vegetation coverage, alpine meadow was of great significance for soil conservation and prevention of soil erosion.
出处	Chinese Science Bulletin
卷	56
期	16
页	1708-1713
收录类别	SCI
语种	英语
ISSN号	1001-6538
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/23120]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Shao Q. Q.,Xiao T.,Liu J. Y.,et al. Soil erosion rates and characteristics of typical alpine meadow using (137)Cs technique in Qinghai-Tibet Plateau. 2011.

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