气候变化领域集成服务门户(CCPortal): Differential responses of grassland community nonstructural carbohydrate to experimental drought along a natural aridity gradient

CCPortal

DOI	10.1016/j.scitotenv.2022.153589
	Differential responses of grassland community nonstructural carbohydrate to experimental drought along a natural aridity gradient
	Song, Lin; Luo, Wentao; Griffin-Nolan, Robert J.; Ma, Wang; Cai, Jiangping; Zuo, Xiaoan; Yu, Qiang; Hartmann, Henrik; Li, Mai-He; Smith, Melinda D.; Collins, Scott L.; Knapp, Alan K.; Wang, Zhengwen; Han, Xingguo
通讯作者	Luo, WT ; Wang, ZW (通讯作者)，Chinese Acad Sci, Inst Appl Ecol, Erguna Forest Steppe Ecotone Res Stn, Shenyang 110016, Peoples R China.
发表日期	2022
ISSN	0048-9697
EISSN	1879-1026
卷号	822
英文摘要	Plant nonstructural carbohydrates (NSC) can reflect community and ecosystem responses to environmental changes such as water availability. Climate change is predicted to increase aridity and the frequency of extreme drought events in grasslands, but it is unclear how community-scale NSC will respond to drought or how such responses may vary along aridity gradients. We experimentally imposed a 4-year drought in six grasslands along a natural aridity gradient and measured the community-weighted mean of leaf soluble sugar (SSCWM) and total leaf NSC (NSCCWM) concentrations. We observed a bell-shape relationship across this gradient, where SSCWM and total NSCCWM concentrations were lowest at intermediate aridity, with this pattern driven primarily by species turnover. Drought manipulation increased both SSCWM and total NSCCWM concentrations at one moderately arid grassland but decreased total NSCCWM concentrations at one moist site. These differential responses to experimental drought depended on the relative role of species turnover and intraspecific variation in driving shifts in SSCWM and total NSCCWM concentrations. Specifically, the synergistic effects of species turnover and intraspecific variation drove the responses of leaf NSC concentrations to drought, while their opposing effects diminished the effect of drought on plant SSCWM and total NSCCWM concentrations. Plant resource strategies were more acquisitive, via higher chlorophyllCWM concentration, to offset reduced NSCCWM concentrations and net aboveground primary productivity (ANPP) with increasing aridity at more mesic sites, but more conservative (i.e., decreased plant heightCWM and ANPP) to reduce NSC consumption at drier sites. The relationship between water availability and NSCCWM concentrations may contribute to community drought resistance and improve plant viability and adaptation strategies to a changing climate.
关键词	EXTREME DROUGHT CHLOROPHYLL-A VARIABILITY PLANTS TREES SENSITIVITY LIMITATION DYNAMICS SOLVENTS SURVIVAL
英文关键词	Aridity gradient; Climate extremes; Drought; Grasslands; Intraspecific variability; Nonstructural carbohydrates; Species turnover
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000766801200011
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255125
作者单位	[Song, Lin; Luo, Wentao; Ma, Wang; Cai, Jiangping; Li, Mai-He; Wang, Zhengwen; Han, Xingguo] Chinese Acad Sci, Inst Appl Ecol, Erguna Forest Steppe Ecotone Res Stn, Shenyang 110016, Peoples R China; [Song, Lin; Ma, Wang; Han, Xingguo] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; [Griffin-Nolan, Robert J.] Syracuse Univ, Dept Biol, Syracuse, NY 13244 USA; [Zuo, Xiaoan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China; [Yu, Qiang] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing 100081, Peoples R China; [Hartmann, Henrik] Max Planck Inst Biogeochem, Hans Knoll Str 10, D-07745 Jena, Germany; [Li, Mai-He] Swiss Fed Inst Forest Snow & Landscape Res WSL, Forest Dynam, CH-8903 Birmensdorf, Switzerland; [Smith, Melinda D.; Knapp, Alan K.] Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA; [Smith, Melinda D.; Knapp, Alan K.] Colorado...
推荐引用方式 GB/T 7714	Song, Lin,Luo, Wentao,Griffin-Nolan, Robert J.,et al. Differential responses of grassland community nonstructural carbohydrate to experimental drought along a natural aridity gradient[J]. 中国科学院西北生态环境资源研究院,2022,822.
APA	Song, Lin.,Luo, Wentao.,Griffin-Nolan, Robert J..,Ma, Wang.,Cai, Jiangping.,...&Han, Xingguo.(2022).Differential responses of grassland community nonstructural carbohydrate to experimental drought along a natural aridity gradient.SCIENCE OF THE TOTAL ENVIRONMENT,822.
MLA	Song, Lin,et al."Differential responses of grassland community nonstructural carbohydrate to experimental drought along a natural aridity gradient".SCIENCE OF THE TOTAL ENVIRONMENT 822(2022).