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Precipitation regulates soil organic carbon affected by shrub encroachment along the altitude gradient

文献类型：期刊论文

作者Liu, Li3,4; Zhao, Guang4; Yao, Daijun3,4; Zong, Ning4; He, Yunlong4; Wu, Wenchao4; Jiang, Qianxin3,4; Zhang, Yangjian1,2
刊名CATENA
出版日期2025-02-01
卷号249页码:108616
关键词Alpine meadow Shrub encroachment Soil organic carbon Soil moisture Precipitation
ISSN号0341-8162
DOI10.1016/j.catena.2024.108616
产权排序1
文献子类Article
英文摘要Shrub encroachment significantly influences the structure and function of alpine meadow ecosystems in the Tibetan Plateau (TP); however, the combined effects of shrub expansion and climate on soil organic carbon (SOC) in these ecosystems remain largely unexplored. To address this gap, we investigated SOC content across elevation gradients (from 4311 to 4992 m a.s.l.) in both shrub-encroached and non-encroached plots at two sites, Yangbajing and Gongtang, which differ in precipitation levels. Both sites are located within the Plateau Subfrigid Arid and Semiarid Region (PSASR) of the TP. As a result, at both locations, shrub encroachment increased woody plant biomass, root biomass at 20-40 cm depth, species diversity, and soil nutrient levels, while reducing herbaceous biomass and surface root biomass (0-20 cm). These increases were strongly linked to surface soil carbon accumulation. Additionally, shrub encroachment substantially increased SOC content at both sites, with the disparity between encroached and non-encroached plots widening as precipitation increased, especially in Gongtang. Furthermore, increased soil moisture can shift the impact of shrub encroachments on plant and soil indicators from neutral to positive stances, again notably in Gongtang. This research underscores the regulatory role of moisture conditions in regulating soil carbon content within shrub-encroached alpine meadows on the TP.
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WOS关键词LEAF-LITTER DECOMPOSITION ; WOODY PLANT INVASION ; GRASSLANDS ; CLIMATE ; VEGETATION ; MATTER ; DIVERSITY ; RESPONSES ; IMPACTS ; BIOMASS
WOS研究方向Geology ; Agriculture ; Water Resources
语种英语
WOS记录号WOS:001374711800001
出版者ELSEVIER
源URL[http://ir.igsnrr.ac.cn/handle/311030/211271]  
专题生态系统网络观测与模拟院重点实验室_外文论文
通讯作者Zhao, Guang
作者单位1.Hebei Univ, Sch Life Sci, Baoding 071002, Hebei, Peoples R China;
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China;
4.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		 Liu, Li,Zhao, Guang,Yao, Daijun,et al. Precipitation regulates soil organic carbon affected by shrub encroachment along the altitude gradient[J]. CATENA,2025,249:108616.
APA Liu, Li.,Zhao, Guang.,Yao, Daijun.,Zong, Ning.,He, Yunlong.,...&Zhang, Yangjian.(2025).Precipitation regulates soil organic carbon affected by shrub encroachment along the altitude gradient.CATENA,249,108616.
MLA Liu, Li,et al."Precipitation regulates soil organic carbon affected by shrub encroachment along the altitude gradient".CATENA 249(2025):108616.

入库方式： OAI收割

来源：地理科学与资源研究所

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