气候变化领域集成服务门户(CCPortal): Plant communities of central Tibetan pastures in the Alpine Steppe/Kobresia pygmaea ecotone

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DOI	10.1016/j.jaridenv.2011.03.001
	Plant communities of central Tibetan pastures in the Alpine Steppe/Kobresia pygmaea ecotone
	Miehe, G.; Miehe, S.; Bach, K.; Noelling, J.; Hanspach, J.; Reudenbach, C.; Kaiser, K.; Wesche, K.; Mosbrugger, V.; Yang, Y. P.; Ma, Y. M.
通讯作者	Bach, K (通讯作者)
发表日期	2011
ISSN	0140-1963
EISSN	1095-922X
起始页码	711
结束页码	723
卷号	75 期号:8
英文摘要	Eleven plant communities of the central Tibetan ecotone (31 degrees 20'-33 degrees 00'N/89 degrees 00'-92 degrees 10'E) between the Kobresia pygmaea grazing pastures of the eastern highlands and the open short grass steppe with cushion plants (Alpine Steppe) of the north-western highlands have been described on the basis of 189 plot-based floristically complete vegetation records. In parallel, remote sensing techniques distinguish four main land-use cover types. Our hypotheses are: (1) The plant communities of the central Tibetan highlands are grazing-adapted and resilient to degradation. (2) In contrast to grazing resilient plant functional types, the turf cover of the K. pygmaea pastures and the Kobresia schoenoides wetlands is degradable through desiccation, periglacial processes, soil-dwelling small mammals and livestock. Five grazing-related plant functional traits are introduced. Grazing tolerance is the prevalent functional type. Species with no specific protection against grazing make up not more than 6% of the total cover. Unpalatable plants cover up to 8%. Only the azonal K. schoenoides swamps - the indispensable winter grazing reserve have been widely degraded and depleted by 75%, being replaced by Carex sagaensis grazing pastures. It can be foreseen that governmental policy of sedentarisation of nomads will lead to reduced grazing mobility and degradation of winter grazing reserves. (C) 2011 Elsevier Ltd. All rights reserved.
关键词	AUTONOMOUS REGION PLATEAU MANAGEMENT CHINA SIMULATION RESPONSES ECOSYSTEM DYNAMICS FUTURE SOUTH
英文关键词	Ecology; Grazing; Plant functional types; Qinghai Tibet plateau; Remote sensing; Steppe
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology ; Environmental Sciences
WOS记录号	WOS:000291624200006
来源期刊	JOURNAL OF ARID ENVIRONMENTS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257953
推荐引用方式 GB/T 7714	Miehe, G.,Miehe, S.,Bach, K.,et al. Plant communities of central Tibetan pastures in the Alpine Steppe/Kobresia pygmaea ecotone[J]. 中国科学院青藏高原研究所,2011,75(8).
APA	Miehe, G..,Miehe, S..,Bach, K..,Noelling, J..,Hanspach, J..,...&Ma, Y. M..(2011).Plant communities of central Tibetan pastures in the Alpine Steppe/Kobresia pygmaea ecotone.JOURNAL OF ARID ENVIRONMENTS,75(8).
MLA	Miehe, G.,et al."Plant communities of central Tibetan pastures in the Alpine Steppe/Kobresia pygmaea ecotone".JOURNAL OF ARID ENVIRONMENTS 75.8(2011).