干旱区生态环境知识资源中心(Arid): Contrasting responses of steppe Stipa ssp. to warming and precipitation variability

Arid

DOI	10.1002/ece3.5452
	Contrasting responses of steppe Stipa ssp. to warming and precipitation variability
	Lv, Xiaomin 1; He, Qijin 2; Zhou, Guangsheng 1,3
通讯作者	Zhou, Guangsheng
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2019
卷号	9 期号:16 页码:9061-9075
英文摘要	Climate change, characterized by warming and precipitation variability, restricted the growth of plants in arid and semiarid areas, and various functional traits are impacted differently. Comparing responses of functional traits to warming and precipitation variability and determining critical water threshold of dominate steppe grasses from Inner Mongolia facilitates the identification and monitoring of water stress effects. A combination of warming (ambient temperature, +1.5 degrees C and +2.0 degrees C) and varying precipitation (-30%, -15%, ambient, +15%, and +30%) manipulation experiments were performed on four Stipa species (S. baicalensis, S. bungeana, S. grandis, and S. breviflora) from Inner Mongolia steppe. The results showed that the functional traits of the four grasses differed in their responses to precipitation, but they shared common sensitive traits (root/shoot ratio, R/S, and specific leaf area; SLA) under ambient temperature condition. Warming increased the response of the four grasses to changing precipitation, and these differences in functional traits resulted in changes to their total biomass, with leaf area, SLA, and R/S making the largest contributions. Critical water thresholds of the four grasses were identified, and warming led to their higher optimum precipitation requirements. The four steppe grasses were able to adapt better to mild drought (summer precipitation decreased by 12%-28%) when warming 1.5 degrees C rather than 2.0 degrees C. These results indicated that if the Paris Agreement to limit global warming to 1.5 degrees C will be accomplished, this will increase the probability for sustained viability of the Stipa steppes in the next 50-100 years.
英文关键词	climatic warming critical water threshold Inner Mongolia steppe precipitation variability sensitivity
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000476445500001
WOS关键词	PLANT-GROWTH ; GRASSLAND ECOSYSTEMS ; ELEVATED CO2 ; WATER-STRESS ; DROUGHT ; BIOMASS ; PRODUCTIVITY ; SENSITIVITY ; DESERT ; CHINA
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
来源机构	中国农业大学 ; 南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215275
作者单位	1.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China; 2.China Agr Univ, Coll Resources & Environm Sci, Beijing, Peoples R China; 3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast Meteorol Disaster, Nanjing, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Lv, Xiaomin,He, Qijin,Zhou, Guangsheng. Contrasting responses of steppe Stipa ssp. to warming and precipitation variability[J]. 中国农业大学, 南京信息工程大学,2019,9(16):9061-9075.
APA	Lv, Xiaomin,He, Qijin,&Zhou, Guangsheng.(2019).Contrasting responses of steppe Stipa ssp. to warming and precipitation variability.ECOLOGY AND EVOLUTION,9(16),9061-9075.
MLA	Lv, Xiaomin,et al."Contrasting responses of steppe Stipa ssp. to warming and precipitation variability".ECOLOGY AND EVOLUTION 9.16(2019):9061-9075.