IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Change in the trade-off between aboveground and belowground biomass of alpine grassland: Implications for the land degradation process
Peng Fei1,2,3; Xue Xian1; You Quangang1; Sun Jian4; Zhou Jun5; Wang Tao1; Tsunekawa Atsushi2,3
2019
Source PublicationLAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
EISSN1099-145X
PagesDOI:10.1002/ldr.3432
SubtypeArticle;Early Access
Contribution Rank5
AbstractAlpine 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.
Keywordalpine grassland biomass allocation desertification grassland degradation structural equation modelling
DOI10.1002/ldr.3432
Indexed BySCI
Language英语
WOS IDWOS:000492735100001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/31292
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorPeng Fei
Affiliation1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resource, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China;
2.Tottori Univ, Int Platform Dryland Res & Educ, Tottori 6800001, Japan;
3.Tottori Univ, Arid Land Res Ctr, Tottori 6800001, Japan;
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China;
5.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
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:DOI:10.1002/ldr.3432.
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,DOI:10.1002/ldr.3432.
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):DOI:10.1002/ldr.3432.
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