中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Mechanism of plant-soil feedback in a degraded alpine grassland on the Tibetan Plateau

文献类型:期刊论文

作者Zhou, Tiancai2,3,4,5; Sun, Jian4; Shi, Peili1,5
刊名JOURNAL OF PLANT ECOLOGY
出版日期2024-04-01
卷号17期号:2页码:rtae025
关键词plant-soil feedback plant function groups degradation alpine grassland Tibetan Plateau
DOI10.1093/jpe/rtae025
产权排序1
文献子类Article
英文摘要Although biotic and abiotic factors have been confirmed to be critical factors that affect community dynamics, their interactive effects have yet to be fully considered in grassland degradation. Herein, we tested how soil nutrients and microbes regulated plant-soil feedback (PSF) in a degraded alpine grassland. Our results indicated that soil total carbon (STC; from 17.66 to 12.55 g/kg) and total nitrogen (STN; from 3.16 to 2.74 g/kg) exhibited significant (P < 0.05) decrease from non-degraded (ND) to severely degraded (SD). Despite higher nutrients in ND soil generating significantly (P < 0.05) positive PSF (0.52) on monocots growth when the soil was sterilized, a high proportion of pathogens (36%) in ND non-sterilized soil resulted in a strong negative PSF on monocots. In contrast, the higher phenotypic plasticity of dicots coupled with a higher abundance of mutualists and saprophytes (70%) strongly promoted their survival and growth in SD with infertile soil. Our findings identified a novel mechanism that there was a functional group shift from monocots with higher vulnerability to soil pathogens in the ND fertile soil to dicots with higher dependence on nutritional mutualists in the degraded infertile soil. The emerging irreversible eco-evolutionary in PSF after degradation might cause a predicament for the restoration of degraded grassland.
WOS关键词LITTER DECOMPOSITION ; COMMUNITY ; TRAITS ; DIVERSITY ; COMPETITION ; DEPENDENCE ; ECOSYSTEM ; DYNAMICS ; DRIVERS ; CARBON
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology ; Forestry
WOS记录号WOS:001225418500001
源URL[http://ir.igsnrr.ac.cn/handle/311030/205193]  
专题拉萨站高原生态系统研究中心_外文论文
通讯作者Shi, Peili
作者单位1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
2.Tibet Res Acad Ecoenvironm Sci, Lhasa 850000, Peoples R China
3.Minist Educ, Key Lab Biodivers & Environm Qinghai Tibet Plateau, Lhasa 850011, Peoples R China
4.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Resources, Beijing 100101, Peoples R China
5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714
Zhou, Tiancai,Sun, Jian,Shi, Peili. Mechanism of plant-soil feedback in a degraded alpine grassland on the Tibetan Plateau[J]. JOURNAL OF PLANT ECOLOGY,2024,17(2):rtae025.
APA Zhou, Tiancai,Sun, Jian,&Shi, Peili.(2024).Mechanism of plant-soil feedback in a degraded alpine grassland on the Tibetan Plateau.JOURNAL OF PLANT ECOLOGY,17(2),rtae025.
MLA Zhou, Tiancai,et al."Mechanism of plant-soil feedback in a degraded alpine grassland on the Tibetan Plateau".JOURNAL OF PLANT ECOLOGY 17.2(2024):rtae025.

入库方式: OAI收割

来源:地理科学与资源研究所

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