气候变化领域集成服务门户(CCPortal): The Kobresia pygmaea ecosystem of the Tibetan highlands - Origin, functioning and degradation of the world's largest pastoral alpine ecosystem Kobresia pastures of Tibet

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DOI	10.1016/j.scitotenv.2018.08.164
	The Kobresia pygmaea ecosystem of the Tibetan highlands - Origin, functioning and degradation of the world's largest pastoral alpine ecosystem Kobresia pastures of Tibet
	Miehe, Georg; Schleuss, Per-Marten; Seeber, Elke; Babel, Wolfgang; Biermann, Tobias; Braendle, Martin; Chen, Fahu; Coners, Heinz; Foken, Thomas; Gerken, Tobias; Graf, Hans-F.; Guggenberger, Georg; Hafner, Silke; Holzapfel, Maika; Ingrisch, Johannes; Kuzyakov, Yakov; Lai, Zhongping; Lehnert, Lukas; Leuschner, Christoph; Li, Xiaogang; Liu, Jianquan; Liu, Shibin; Ma, Yaoming; Miehe, Sabine; Mosbrugger, Volker; Noltie, Henry J.; Schmidt, Joachim; Spielvogel, Sandra; Unteregelsbacher, Sebastian; Wang, Yun; Willinghoefer, Sandra; Xu, Xingliang; Yang, Yongping; Zhang, Shuren; Opgenoorth, Lars; Wesche, Karsten
通讯作者	Opgenoorth, L (通讯作者)
发表日期	2019
ISSN	0048-9697
EISSN	1879-1026
起始页码	754
结束页码	771
卷号	648
英文摘要	With 450,000 km(2) Kobresia (syn. Carex) pygmaea dominated pastures in the eastern Tibetan highlands are the world's largest pastoral alpine ecosystemforming a durable turf cover at 3000-6000 m a.s.l. Kobresia's resilience and competitiveness is based on dwarf habit, predominantly below-ground allocation of photo assimilates, mixture of seed production and clonal growth, and high genetic diversity. Kobresia growth is co-limited by livestock-mediated nutrient withdrawal and, in the drier parts of the plateau, low rainfall during the short and cold growing season. Overstocking has caused pasture degradation and soil deterioration over most parts of the Tibetan highlands and is the basis for this man-made ecosystem. Natural autocyclic processes of turf destruction and soil erosion are initiated through polygonal turf cover cracking, and accelerated by soil-dwelling endemic small mammals in the absence of predators. The major consequences of vegetation cover deterioration include the release of large amounts of C, earlier diurnal formation of clouds, and decreased surface temperatures. These effects decrease the recovery potential of Kobresia pastures and make them more vulnerable to anthropogenic pressure and climate change. Traditional migratory rangeland management was sustainable over millennia, and possibly still offers the best strategy to conserve and possibly increase C stocks in the Kobresia turf. (C) 2018 The Authors. Published by Elsevier B.V.
关键词	PERMANENT HUMAN OCCUPATION CLIMATE VARIABILITY INORGANIC NITROGEN PLANT-COMMUNITIES HUMAN HABITATION SOIL-MOISTURE COVER CHANGES CO2 EXCHANGE 21 KA PLATEAU
英文关键词	Alpine meadow; Alpine plant ecology; Carbon cycle and sequestration; Carex parvula; Grazing ecology; Hydrological cycle; Nutrient cycles; Paleo-environment; Qinghai-Tibet Plateau; Rangeland management
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000447805500070
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
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/259662
推荐引用方式 GB/T 7714	Miehe, Georg,Schleuss, Per-Marten,Seeber, Elke,et al. The Kobresia pygmaea ecosystem of the Tibetan highlands - Origin, functioning and degradation of the world's largest pastoral alpine ecosystem Kobresia pastures of Tibet[J]. 中国科学院青藏高原研究所,2019,648.
APA	Miehe, Georg.,Schleuss, Per-Marten.,Seeber, Elke.,Babel, Wolfgang.,Biermann, Tobias.,...&Wesche, Karsten.(2019).The Kobresia pygmaea ecosystem of the Tibetan highlands - Origin, functioning and degradation of the world's largest pastoral alpine ecosystem Kobresia pastures of Tibet.SCIENCE OF THE TOTAL ENVIRONMENT,648.
MLA	Miehe, Georg,et al."The Kobresia pygmaea ecosystem of the Tibetan highlands - Origin, functioning and degradation of the world's largest pastoral alpine ecosystem Kobresia pastures of Tibet".SCIENCE OF THE TOTAL ENVIRONMENT 648(2019).