干旱区生态环境知识资源中心(Arid): How precipitation and grazing influence the ecological functions of drought-prone grasslands on the northern slopes of the Tianshan Mountains, China?

Arid

DOI	10.1007/s40333-020-0078-6
	How precipitation and grazing influence the ecological functions of drought-prone grasslands on the northern slopes of the Tianshan Mountains, China?
	Huang Xiaotao; Luo Geping; Chen Chunbo; Peng Jian; Zhang Chujie; Zhou Huakun; Yao Buqing; Ma Zhen; Xi Xiaoyan
通讯作者	Luo, GP
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
英文摘要	Drought-prone grasslands provide a critical resource for the millions of people who are dependent on livestock for food security. However, this ecosystem is potentially vulnerable to climate change (e.g., precipitation) and human activity (e.g., grazing). Despite this, the influences of precipitation and grazing on ecological functions of drought-prone grasslands in the Tianshan Mountains remain relatively unexplored. Therefore, we conducted a systematic field investigation and a clipping experiment (simulating different intensities of grazing) in a drought-prone grassland on the northern slopes of the Tianshan Mountains in China to examine the influences of precipitation and grazing on aboveground biomass (AGB), soil volumetric water content (SVWC), and precipitation use efficiency (PUE) during the period of 2014-2017. We obtained the meteorological and SVWC data using an HL20 Bowen ratio system and a PR2 soil profile hydrometer, respectively. We found that AGB was clearly affected by both the amount and seasonal pattern of precipitation, and that PUE may be relatively low in years with either low or excessive precipitation. The PUE values were generally higher in the rapid growing season (April-July) than in the entire growing season (April-October). Overall, moderate grazing can promote plant growth under water stress conditions. The SVWC value was higher in the clipped plots than in the unclipped plots in the rapid growing season (April-July), but it was lower in the clipped plots than in the unclipped plots in the slow growing season (August-October). Our findings can enhance the understanding of the ecological effects of precipitation and grazing in drought-prone grasslands and provide data that will support the effective local grassland management.
英文关键词	climate change human activity aboveground biomass precipitation use efficiency soil volumetric water content water stress
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000566023900001
WOS关键词	NET PRIMARY PRODUCTIVITY ; USE EFFICIENCY ; CENTRAL-ASIA ; SEMIARID GRASSLAND ; SOIL RESPIRATION ; ARID AREA ; ECOSYSTEM ; WATER ; DEGRADATION ; DIVERSITY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328205
作者单位	[Huang Xiaotao; Zhou Huakun; Yao Buqing; Ma Zhen] Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Restorat Ecol Cold Reg, Xining 810008, Peoples R China; [Huang Xiaotao; Zhou Huakun; Yao Buqing; Ma Zhen] Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China; [Huang Xiaotao; Luo Geping; Chen Chunbo] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; [Huang Xiaotao; Luo Geping; Chen Chunbo; Zhou Huakun; Yao Buqing; Ma Zhen] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Peng Jian; Zhang Chujie] Xinjiang Grassland Tech Popularizat Stn, Urumqi 830049, Peoples R China; [Xi Xiaoyan] Qinghai Environm Sci Res & Design Inst Co Ltd, Xining 810007, Peoples R China
推荐引用方式 GB/T 7714	Huang Xiaotao,Luo Geping,Chen Chunbo,et al. How precipitation and grazing influence the ecological functions of drought-prone grasslands on the northern slopes of the Tianshan Mountains, China?[J]. 中国科学院新疆生态与地理研究所.
APA	Huang Xiaotao.,Luo Geping.,Chen Chunbo.,Peng Jian.,Zhang Chujie.,...&Xi Xiaoyan.
MLA	Huang Xiaotao,et al."How precipitation and grazing influence the ecological functions of drought-prone grasslands on the northern slopes of the Tianshan Mountains, China?".JOURNAL OF ARID LAND