Abstract
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 137Cs. 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.
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Shao, Q., Xiao, T., Liu, J. et al. Soil erosion rates and characteristics of typical alpine meadow using 137Cs technique in Qinghai-Tibet Plateau. Chin. Sci. Bull. 56, 1708–1713 (2011). https://doi.org/10.1007/s11434-011-4477-0
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DOI: https://doi.org/10.1007/s11434-011-4477-0