Change in the trade-off between aboveground and belowground biomass of alpine grassland: Implications for the land degradation process

doi:10.1002/ldr.3432

	Change in the trade-off between aboveground and belowground biomass of alpine grassland: Implications for the land degradation process
	Peng, Fei 2,3,4; Xue, Xian 2; You, Quangang 2; Sun, Jian 5; Zhou, Jun 1; Wang, Tao 2; Tsunekawa, Atsushi 3,4
刊名	LAND DEGRADATION & DEVELOPMENT
	2019-10-28
页码	13
关键词	alpine grassland biomass allocation desertification grassland degradation structural equation modelling
ISSN号	1085-3278
DOI	10.1002/ldr.3432
通讯作者	Peng, Fei(pengfei@lzb.ac.cn)
英文摘要	Alpine grassland on the Qinghai-Tibet Plateau has been degrading in recent decades. A better understanding of biomass trade-off (biomass allocation between aboveground [AGB] and belowground [BGB]) change with alpine grassland degradation could uncover the degradation processes and its underlying mechanisms. We surveyed the plant and soil characteristics of alpine meadow (AM) and alpine steppe (AS) at varying degradation levels on the plateau. In the AM, the AGB was only reduced when very severely degraded, but the BGB declined at any level of degradation. In the AS, the AGB showed no significant difference in the slightly, moderately, and severely degraded levels, and the AGB only significantly declined in the very severely degraded, whereas the BGB was nonsignificantly higher in the slightly degraded and gradually declined when the levels changed from slightly to very severely degraded. In the undegraded grasslands, the biomass trade-off was towards AGB and BGB in AS and AM, respectively. With degradation, the biomass trade-off shifted from AGB to BGB at the slightly degraded levels and then gradually reached zero trade-off at the very severely degraded level in the AS. In the AM, the trade-off gradually reached zero as moderately degraded progressed to very severely degraded level. The change in plant community composition and bulk density affected the biomass trade-off change independently with AM degradation, whereas only soil moisture, soil nitrogen, and soil pH interactively influenced the biomass trade-off change with AS degradation. Our results suggest different AGB and BGB change processes and mechanisms with AS and AM degradation.
资助项目	Youth Innovation Promotion Association CAS; National Natural Science Foundation of China[41771229] ; Youth Innovation Promotion Association CAS; National Natural Science Foundation of China[41771233] ; National Key Research RD Project[2016YFC0501803]
WOS关键词	QINGHAI-TIBETAN PLATEAU ; RANGELAND DEGRADATION ; PLANT-COMMUNITIES ; SOIL PROPERTIES ; ALLOCATION ; MEADOW ; CHINA ; ROOT ; DIVERSITY ; RESPONSES
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
语种	英语
出版者	WILEY
WOS记录号	WOS:000492735100001
资助机构	Youth Innovation Promotion Association CAS; National Natural Science Foundation of China ; National Key Research RD Project
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/132029]
专题	中国科学院地理科学与资源研究所
通讯作者	Peng, Fei
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resource, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China 3.Tottori Univ, Int Platform Dryland Res & Educ, Tottori 6800001, Japan 4.Tottori Univ, Arid Land Res Ctr, Tottori 6800001, Japan 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Peng, Fei,Xue, Xian,You, Quangang,et al. Change in the trade-off between aboveground and belowground biomass of alpine grassland: Implications for the land degradation process[J]. LAND DEGRADATION & DEVELOPMENT,2019:13.
APA	Peng, Fei.,Xue, Xian.,You, Quangang.,Sun, Jian.,Zhou, Jun.,...&Tsunekawa, Atsushi.(2019).Change in the trade-off between aboveground and belowground biomass of alpine grassland: Implications for the land degradation process.LAND DEGRADATION & DEVELOPMENT,13.
MLA	Peng, Fei,et al."Change in the trade-off between aboveground and belowground biomass of alpine grassland: Implications for the land degradation process".LAND DEGRADATION & DEVELOPMENT (2019):13.