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草业学报  2014 

高寒草甸对旅游踩踏的抗干扰响应能力

DOI: 10.11686/cyxb20140239, PP. 333-339

Keywords: 高寒草甸,踩踏,抗踩踏能力,恢复力,香格里拉

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Abstract:

以香格里拉石质干草甸和林缘中生草甸为研究对象,结合野外踩踏模拟实验,通过方差分析和回归分析确定2种植物群落对踩踏干扰的响应规律,及其耐踩踏能力和恢复力。结果表明,1)随着踩踏强度增加,2种生境的草甸群落相对盖度均逐渐降低,但是林缘中生草甸的下降更明显;2)石质干草甸群落的耐踩踏能力在708次左右,林缘中生草甸群落约为551次;3)踩踏1年后,石质干草甸群落的相对盖度恢复了66.5%,而林缘草甸群落则恢复了86.1%,后者表现出更强的恢复能力;4)石质干草甸主要物种的耐踩踏能力介于390~578次之间,林缘中生草甸主要物种的则介于282~463次之间。

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