干旱区生态环境知识资源中心(Arid): Contrasting responses of plant above and belowground biomass carbon pools to extreme drought in six grasslands spanning an aridity gradient

Arid

DOI	10.1007/s11104-021-05258-4
	Contrasting responses of plant above and belowground biomass carbon pools to extreme drought in six grasslands spanning an aridity gradient
	Jaman, Md Shahariar; Wu, Honghui; Yu, Qiang; Tan, Qiqi; Zhang, Yunlong; Dam, Quoc Khanh; Muraina, Taofeek O.; Xu, Chong; Jing, Minghui; Jia, Xiaotong; Wang, Jie; He, Nianpeng; Luo, Wentao; Knapp, Alan; Wilkins, Kate; Collins, Scott L.; Luo, Yiqi
通讯作者	Wu, HH (corresponding author)，Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr, Key Lab Crop Nutr & Fertilizat, Beijing 100081, Peoples R China.
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2022-02
英文摘要	Background and aim As global climate change intensifies, the frequency and duration of extreme droughts are predicted to increase, resulting in extended periods of reduced soil water availability across ecosystems. The allocation of carbon (C) to above- and below-ground plant biomass is a fundamental ecosystem property that varies spatially and temporally with water availability. Yet, how extreme drought affects biomass pools along an aridity gradient remains poorly understood. Methods To elucidate the effects of extreme drought on above- and belowground carbon storage, we conducted a 3-year (2015-2017) precipitation manipulation experiment (66% reduction in growing season precipitation) to simulate a multi-year extreme drought across six grasslands spanning an aridity gradient from desert steppe, typical steppe, and meadow steppe in northern China. Results Extreme drought significantly decreased aboveground biomass carbon (AGBC) and litter carbon (LC), but did not affect belowground biomass carbon (BGBC) across the six grasslands. As a result, grassland total carbon (TC) in plant biomass declined overall by similar to 10%. Across the aridity gradient, drought-induced reductions in AGBC and LC increased with increasing aridity (i.e., reductions were greater in desert steppe than meadow steppe). In contrast, extreme drought increased BGBC in the drier grass-lands (desert steppe and typical steppe), but decreased BGBC in the more mesic meadow steppe sites. Conclusion We found that extreme drought elicited contrasting responses of plant above- and below-ground carbon across an aridity gradient, and that regionally extreme drought will result in a loss of total plant carbon in grasslands dominated by above-ground plant carbon pools.
英文关键词	Biomass carbon Climate change Extreme drought Grassland Precipitation manipulation experiment
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000758312800003
WOS关键词	ECOSYSTEM CARBON ; CLIMATE EXTREMES ; SUMMER DROUGHT ; PRECIPITATION GRADIENT ; PRIMARY PRODUCTIVITY ; ABOVEGROUND BIOMASS ; REGIONAL PATTERNS ; NITROGEN DYNAMICS ; USE EFFICIENCY ; ABSCISIC-ACID
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377258
作者单位	[Jaman, Md Shahariar; Wu, Honghui; Dam, Quoc Khanh] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr, Key Lab Crop Nutr & Fertilizat, Beijing 100081, Peoples R China; [Jaman, Md Shahariar] Sher E Bangla Agr Univ, Dept Agroforestry & Environm Sci, Dhaka 1207, Bangladesh; [Yu, Qiang; Tan, Qiqi; Zhang, Yunlong; Muraina, Taofeek O.; Xu, Chong; Jing, Minghui; Jia, Xiaotong; Wang, Jie] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing 100081, Peoples R China; [Muraina, Taofeek O.] Oyo State Coll Agr & Technol, Dept Anim Hlth & Prod, PMB 10, Igbo Ora, Oyo State, Nigeria; [He, Nianpeng] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; [Luo, Wentao] Chinese Acad Sci, Inst Appl Ecol, Erguna Forest Steppe Ecotone Res Stn, Shenyang 110164, Peoples R China; [Knapp, Alan; Wilkins, Kate] Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA; [Collins, S...
推荐引用方式 GB/T 7714	Jaman, Md Shahariar,Wu, Honghui,Yu, Qiang,et al. Contrasting responses of plant above and belowground biomass carbon pools to extreme drought in six grasslands spanning an aridity gradient[J],2022.
APA	Jaman, Md Shahariar.,Wu, Honghui.,Yu, Qiang.,Tan, Qiqi.,Zhang, Yunlong.,...&Luo, Yiqi.(2022).Contrasting responses of plant above and belowground biomass carbon pools to extreme drought in six grasslands spanning an aridity gradient.PLANT AND SOIL.
MLA	Jaman, Md Shahariar,et al."Contrasting responses of plant above and belowground biomass carbon pools to extreme drought in six grasslands spanning an aridity gradient".PLANT AND SOIL (2022).