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

文献类型：期刊论文

作者Peng, Fei2,3,4; Xue, Xian2; You, Quangang2; Sun, Jian5; Zhou, Jun1; Wang, Tao2; Tsunekawa, Atsushi3,4
刊名LAND DEGRADATION & DEVELOPMENT
出版日期2019-10-28
页码13
ISSN号1085-3278
关键词alpine grassland biomass allocation desertification grassland degradation structural equation modelling
DOI10.1002/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.
WOS关键词QINGHAI-TIBETAN PLATEAU ; RANGELAND DEGRADATION ; PLANT-COMMUNITIES ; SOIL PROPERTIES ; ALLOCATION ; MEADOW ; CHINA ; ROOT ; DIVERSITY ; RESPONSES
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
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.

入库方式： OAI收割

来源：地理科学与资源研究所

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