Plant traits and soil fertility mediate productivity losses under extreme drought in C-3 grasslands

doi:10.1002/ecy.3465

	Plant traits and soil fertility mediate productivity losses under extreme drought in C-3 grasslands
	Luo, Wentao ; Griffin-Nolan, Robert J.; Ma, Wang ; Liu, Bo ; Zuo, Xiaoan 2; Xu, Chong 3; Yu, Qiang 3; Luo, Yahuang 4; Mariotte, Pierre 5; Smith, Melinda D.; Collins, Scott L.; Knapp, Alan K.; Wang, Zhengwen ; Han, Xingguo9,10
	2021
发表期刊	ECOLOGY
ISSN	0012-9658
卷号	102 期号:10
摘要	Extreme drought decreases aboveground net primary production (ANPP) in most grasslands, but the magnitude of ANPP reductions varies especially in C-3-dominated grasslands. Because the mechanisms underlying such differential ecosystem responses to drought are not well resolved, we experimentally imposed an extreme 4-yr drought (2015-2018) in two C-3 grasslands that differed in aridity. These sites had similar annual precipitation and dominant grass species (Leymus chinensis) but different annual temperatures and thus water availability. Drought treatments differentially affected these two semiarid grasslands, with ANPP of the drier site reduced more than at the wetter site. Structural equation modeling revealed that community-weighted means for some traits modified relationships between soil moisture and ANPP, often due to intraspecific variation. Specifically, drought reduced community mean plant height at both sites, resulting in a reduction in ANPP beyond that attributable to reduced soil moisture alone. Higher community mean leaf carbon content enhanced the negative effects of drought on ANPP at the drier site, and ANPP-soil-moisture relationships were influenced by soil C:N ratio at the wetter site. Importantly, neither species richness nor functional dispersion were significantly correlated with ANPP at either site. Overall, as expected, soil moisture was a dominant, direct driver of ANPP response to drought, but differential sensitivity to drought in these two grasslands was also related to soil fertility and plant traits.
关键词	community-weighted traits drought functional dispersion plant traits productivity soil fertility species richness
学科领域	Ecology
DOI	10.1002/ecy.3465
收录类别	SCI
语种	英语
WOS关键词	FUNCTIONAL DIVERSITY ; BIODIVERSITY ; RESPONSES ; SELECTION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000686031300001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1939-9170
资助机构	National Key Research and Development Program of China [2016YFC0500602, 2016YFC0500703] ; National Natural Science Foundation of China [31971465, 41603080, 41320104002] ; Youth Innovation Promotion Association CAS [2020199] ; Drought-Net Research Coordination Network [DEB-1354732] ; Macrosystems Biology/Emerging Frontiers Programs [EF-1137342, EF-1137378, EF-1137363, EF-1137293]
作者邮箱	yuqiang@caas.cn
引用统计	被引频次：33[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/2S10CLM1/26659
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 Appl Ecol, Erguna Forest Steppe Ecotone Res Stn, Shenyang 110016, Peoples R China 2.Griffin-Nolan, Robert J.] Syracuse Univ, Dept Biol, Syracuse, NY 13244 USA 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China 4.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing 100081, Peoples R China 5.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China 6.Agroscope, Grazing Syst, Route Duillier 50, CH-1260 Nyon, Switzerland 7.Smith, Melinda D.; Knapp, Alan K.] Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA 8.Smith, Melinda D.] Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA 9.Collins, Scott L.] Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA 10.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 11.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Luo, Wentao,Griffin-Nolan, Robert J.,Ma, Wang,et al. Plant traits and soil fertility mediate productivity losses under extreme drought in C-3 grasslands[J]. ECOLOGY,2021,102(10).
APA	Luo, Wentao.,Griffin-Nolan, Robert J..,Ma, Wang.,Liu, Bo.,Zuo, Xiaoan.,...&Han, Xingguo.(2021).Plant traits and soil fertility mediate productivity losses under extreme drought in C-3 grasslands.ECOLOGY,102(10).
MLA	Luo, Wentao,et al."Plant traits and soil fertility mediate productivity losses under extreme drought in C-3 grasslands".ECOLOGY 102.10(2021).

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