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中文摘要：
研究不同放牧强度对高寒草甸植被特征的影响。结果表明称多地区高寒草甸在重度放牧处理下矮嵩草的高度与其它处理存在差异显著性（P〈0．05），放牧强度对毒草类植被高度影响不显著。不同放牧强度对植被盖度的影响各不相同，矮嵩草经放牧处理盖度有明显减少，重度放牧可降低植被总盖度，其它处理影响不显著。重度与中度放牧可使高寒草甸草场地上、地下生物量明显减少。
英文摘要：
Effects of different grazing intensity of Yak on vegetation traits of alpine meadow in Chengduo were studied. The experimental studying showed ： the height of Kobresia humilis of alpine meadow under heavy grazing had significant differences （ P 〈 0.05 ） compared with the others treatment, there was not a significant effect of grazing intensity on the height of noxious grass. There were different effects on vegetable cover under different grazing intensity, the cover of Kobresia humilis deereasede under grazing, total covers of the vegetable decreased under heavy grazing, other treatment had no significant effect of total covers. Biomass and underground biomass decreased under heavy grazing and medium grazing.
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