气候变化领域集成服务门户(CCPortal): Warming and land use change concurrently erode ecosystem services in Tibet

CCPortal

DOI	10.1111/gcb.14417
	Warming and land use change concurrently erode ecosystem services in Tibet
	Hopping, Kelly A.; Knapp, Alan K.; Dorji, Tsechoe; Klein, Julia A.
通讯作者	Hopping, KA (通讯作者)
发表日期	2018
ISSN	1354-1013
EISSN	1365-2486
起始页码	5534
结束页码	5548
卷号	24 期号:11
英文摘要	Alpine meadows on the Tibetan Plateau comprise the largest alpine ecosystem in the world and provide critical ecosystem services, including forage production and carbon sequestration, on which people depend from local to global scales. However, the provision of these services may be threatened by climate warming combined with land use policies that are altering if and how pastoralists can continue to graze livestock, the dominant livelihood practice in this region for millennia. We synthesized findings from a climate warming and yak grazing experiment with landscape-level observations in central Tibet to gain insight into the trajectories of change that Tibet's alpine meadows will undergo in response to expected changes in climate and land use. We show that within 5 years, experimental warming drove an alpine community with intact, sedge-dominated turfs into a degraded state. With removal of livestock, consistent with policy intended to reverse degradation, a longer-term shift to a more shrub-dominated community will likely occur. Neither degraded nor shrub meadows produce forage or sequester carbon to the same degree as intact meadows, indicating that climate warming and drying will reduce the ability of Tibet's alpine meadows to provide key ecosystem services, and that livestock reduction policies intended to counteract trajectories of land degradation instead endanger contemporary livelihoods on the Tibetan Plateau.
关键词	LITTER DECOMPOSITION RATES ALPINE MEADOW CLIMATE-CHANGE ENVIRONMENTAL GRADIENTS POTENTILLA-FRUTICOSA PLANT-COMMUNITIES COLD BIOMES CO2 FLUXES PLATEAU VEGETATION
英文关键词	climate change; community composition; degradation; ecosystem CO2 flux; grazing; shrubs; soil carbon; Tibetan Plateau
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:000447760300040
来源期刊	GLOBAL CHANGE BIOLOGY
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/259200
推荐引用方式 GB/T 7714	Hopping, Kelly A.,Knapp, Alan K.,Dorji, Tsechoe,et al. Warming and land use change concurrently erode ecosystem services in Tibet[J]. 中国科学院青藏高原研究所,2018,24(11).
APA	Hopping, Kelly A.,Knapp, Alan K.,Dorji, Tsechoe,&Klein, Julia A..(2018).Warming and land use change concurrently erode ecosystem services in Tibet.GLOBAL CHANGE BIOLOGY,24(11).
MLA	Hopping, Kelly A.,et al."Warming and land use change concurrently erode ecosystem services in Tibet".GLOBAL CHANGE BIOLOGY 24.11(2018).