Increased precipitation attenuates shrub encroachment by facilitating herbaceous growth in a Mongolian grassland

doi:10.1111/1365-2435.14100

	Increased precipitation attenuates shrub encroachment by facilitating herbaceous growth in a Mongolian grassland
	Zhu, Yankun 1; Shen, Haihua 1; Akinyemi, Damilare Stephen 1; Zhang, Pujin 2; Feng, Yinping 1; Zhao, Mengying 1; Kang, Jie 1; Zhao, Xia ; Hu, Huifeng ; Fang, Jingyun1,3,4
	2022
发表期刊	FUNCTIONAL ECOLOGY
ISSN	0269-8463
卷号	36 期号:9 页码:2356-2366
摘要	Widespread shrub encroachment is profoundly impacting the structures and functions of global drylands, and precipitation change is assumed to be one of the most critical factors affecting this phenomenon. However, there is little evidence to show how precipitation changes will affect the process. In this study, we conducted a 6-year precipitation manipulation experiment (-30%, ambient, +30% and +50%) to investigate the effects of precipitation changes on the growth of shrubs and herbaceous plants in a shrub-encroached grassland in Inner Mongolia. We found that the increasing precipitation significantly increased the mean height, coverage and above-ground biomass of herbaceous species, while the growth of shrub species did not exhibit a significant response to precipitation changes. With increasing precipitation, the relative coverage of shrubs decreased, while that of herbs increased. The native dominant herbaceous plant (Leymus chinensis), with more sensitive maximum photosynthetic rate to the precipitation change, showed higher photosynthetic nitrogen use efficiency and water use efficiency than those of the encroached shrub species (Caragana microphylla) at high soil moisture contents, reflecting that the ecophysiological characteristics of L. chinensis might provide it a competitive advantage under increased precipitation. Our findings suggest that increasing precipitation may slow down shrub encroachment by facilitating herbaceous growth in Mongolian grasslands, and consequently affect the forage value and carbon budget in these ecosystems. Read the free Plain Language Summary for this article on the Journal blog.
关键词	biomass precipitation change shrub encroachment water use strategies
学科领域	Ecology
DOI	10.1111/1365-2435.14100
收录类别	SCI
语种	英语
WOS关键词	NET PRIMARY PRODUCTIVITY ; CHIHUAHUAN DESERT ; ALTERED PRECIPITATION ; 2-LAYER HYPOTHESIS ; USE EFFICIENCY ; CLIMATE-CHANGE ; WOODY COVER ; WATER-USE ; DETERMINANTS ; ECOSYSTEM
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000812900500001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2435
资助机构	National Natural Science Foundation of China [31988102, 31971747, 31330012] ; China Postdoctoral Science Foundation [2021M693398]
作者邮箱	shen.haihua@ibcas.ac.cn ; jyfang@urban.pku.edu.cn
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/28555
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot, Peoples R China 4.Peking Univ, Dept Ecol, Coll Urban & Environm, Beijing, Peoples R China 5.Peking Univ, Key Lab Earth Surface Proc, Minist Educ, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Yankun,Shen, Haihua,Akinyemi, Damilare Stephen,et al. Increased precipitation attenuates shrub encroachment by facilitating herbaceous growth in a Mongolian grassland[J]. FUNCTIONAL ECOLOGY,2022,36(9):2356-2366.
APA	Zhu, Yankun.,Shen, Haihua.,Akinyemi, Damilare Stephen.,Zhang, Pujin.,Feng, Yinping.,...&Fang, Jingyun.(2022).Increased precipitation attenuates shrub encroachment by facilitating herbaceous growth in a Mongolian grassland.FUNCTIONAL ECOLOGY,36(9),2356-2366.
MLA	Zhu, Yankun,et al."Increased precipitation attenuates shrub encroachment by facilitating herbaceous growth in a Mongolian grassland".FUNCTIONAL ECOLOGY 36.9(2022):2356-2366.

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