干旱区生态环境知识资源中心(Arid): Drought-induced productivity and economic losses in grasslands from Inner Mongolia vary across vegetation types

Arid

DOI	10.1007/s10113-021-01789-9
	Drought-induced productivity and economic losses in grasslands from Inner Mongolia vary across vegetation types
	Liu, Xiaoxu; Zhu, Zhongyuan; Yu, Miao; Liu, Xiaomin
通讯作者	Zhu, ZY (corresponding author), Inner Mongolia Agr Univ, Water Conservancy & Civil Engn Coll, Hohhot 010018, Peoples R China.
来源期刊	REGIONAL ENVIRONMENTAL CHANGE
ISSN	1436-3798
EISSN	1436-378X
出版年	2021
卷号	21 期号:2
英文摘要	The frequency of extreme weather events, such as drought, is increasing under climate change in some areas. Grassland ecosystems are extremely sensitive to drought. Here we sought to determine which vegetation types are the most vulnerable drought within the Xilinguole grasslands of Inner Mongolia and to establish methods to quantitatively evaluate the effects of different drought levels on grassland productivity and economic losses. Over the past 20 years, the total annual precipitation in the Xilinguole League decreased by 24-52%, resulting in a reduction in annual pasture yield of 31-237 kg/ha and a loss of livestock grazing capacity of 3-20 head/10 ha, causing 4-26 billion yuan in direct economic losses. Across the league, 78% of drought-induced direct economic losses were concentrated in ecologically vulnerable areas, including sandy and desert grasslands and typical grasslands at the northern end and in southwestern areas. Grassland net primary productivity (NPP) was sensitive to and significantly affected by drought. As the standardised precipitation evapotranspiration index (SPEI) drought level increased, NPP loss rate increased significantly by more than 20% for each drought level. The effects of increasing drought on NPP varied within grassland types, and the effects of a given drought level were different across grassland types. Typical grasslands suffered high losses at all drought stages. Meadow grasslands adjusted relatively well to drought as the rate of grassland NPP loss changed relatively slowly with increasing drought. Desert grasslands were less affected by light-to-moderate drought than by moderate-to-severe drought. This study provides a scientific basis for improving ecosystem resilience and drought prevention and management.
英文关键词	Grassland Ecosystem NPP RUE Drought Economic losses
类型	Article
语种	英语
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000686495300001
WOS关键词	NET PRIMARY PRODUCTIVITY ; USE EFFICIENCY ; CARBON USE ; CLIMATE ; IMPACTS ; CHINA ; WATER ; FRAMEWORK
WOS类目	Environmental Sciences ; Environmental Studies
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364458
作者单位	[Liu, Xiaoxu; Zhu, Zhongyuan; Liu, Xiaomin] Inner Mongolia Agr Univ, Water Conservancy & Civil Engn Coll, Hohhot 010018, Peoples R China; [Yu, Miao] Inner Mongolia Water Ind Investment Grp Co Ltd, Hohhot 010020, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiaoxu,Zhu, Zhongyuan,Yu, Miao,et al. Drought-induced productivity and economic losses in grasslands from Inner Mongolia vary across vegetation types[J],2021,21(2).
APA	Liu, Xiaoxu,Zhu, Zhongyuan,Yu, Miao,&Liu, Xiaomin.(2021).Drought-induced productivity and economic losses in grasslands from Inner Mongolia vary across vegetation types.REGIONAL ENVIRONMENTAL CHANGE,21(2).
MLA	Liu, Xiaoxu,et al."Drought-induced productivity and economic losses in grasslands from Inner Mongolia vary across vegetation types".REGIONAL ENVIRONMENTAL CHANGE 21.2(2021).