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The effects of grazing and fencing on grassland productivity and diversity in alpine grassland ecosystem in the Tibetan highland

文献类型：期刊论文

作者Xiang, Mingxue2,3; Wu, Junxi1,2,3; Duo, Lha1; Niu, Ben2,3; Zhang, Xianzhou2,3
刊名GLOBAL ECOLOGY AND CONSERVATION
出版日期2023-08-01
卷号44页码:13
关键词Alpine grassland Altitude Plant diversity Productivity Soil nutrient Tibetan
DOI10.1016/j.gecco.2023.e02495
通讯作者Wu, Junxi(wujx@igsnrr.ac.cn) ; Zhang, Xianzhou(zhangxz@igsnrr.ac.cn)
英文摘要Anthropogenic activities, such as grazing and fencing, have been known to alter the productivity and biodiversity of grassland ecosystems, potentially affecting their functioning. However, the impact of these activities on aboveground biomass (AGB) and plant diversity in alpine grasslands at different altitudes, as well as how they may be affected by soil nutrients and environmental climate, is not well understood. To address this knowledge gap, a study was conducted in the Lhasa Valley of Tibet. In 2013, twelve metal fences were set up at mountainous transects, and field surveys were conducted at twelve paired sites in early August 2021. The results of the study showed that AGB was slightly higher in fenced sites compared to grazed sites at altitudes from 4000 to 5100 m, but decreased with altitude at a slower rate in grazed sites. Plant diversity indices exhibited a unimodal pattern with increasing altitude, with no significant differences between fenced and grazed sites. Soil nutrients and environmental climate were found to be positively correlated with plant diversity indices and AGB at both fenced and grazed sites. Multiple linear regression models revealed that AGB and the Shannon index were largely influ-enced by soil nutrients (AP and AN) rather than by growing season soil temperature at fenced sites, while AGB and the Shannon index were more impacted by growing season soil temperature than by soil nutrients at grazed sites. These findings provide important insights into the impacts of grazing and fencing on above-ground biomass and plant diversity in mountainous environments.
WOS关键词PLANT-SPECIES DIVERSITY ; LARGE ALTITUDINAL GRADIENT ; SOIL ORGANIC-CARBON ; ELEVATION GRADIENT ; C STOCKS ; EXCLUSION ; NITROGEN ; BIODIVERSITY ; COMMUNITY ; RICHNESS
资助项目Second Tibetan Plateau Scientific Expedition and Research (STEP) Program[2021YFD1000303] ; National Key Research and Development Program of China[XZ202201ZY0016G] ; Tibet Autonomous Region Science and Technology Planning Project ; [2019QZKK1002]
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:001053939000001
资助机构Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; National Key Research and Development Program of China ; Tibet Autonomous Region Science and Technology Planning Project
源URL[http://ir.igsnrr.ac.cn/handle/311030/196739]  
专题中国科学院地理科学与资源研究所
通讯作者Wu, Junxi; Zhang, Xianzhou
作者单位1.Tibet Univ, Sch Sci, Lhasa 850000, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Lhasa Plateau Ecosyst Res Stn, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Xiang, Mingxue,Wu, Junxi,Duo, Lha,et al. The effects of grazing and fencing on grassland productivity and diversity in alpine grassland ecosystem in the Tibetan highland[J]. GLOBAL ECOLOGY AND CONSERVATION,2023,44:13.
APA Xiang, Mingxue,Wu, Junxi,Duo, Lha,Niu, Ben,&Zhang, Xianzhou.(2023).The effects of grazing and fencing on grassland productivity and diversity in alpine grassland ecosystem in the Tibetan highland.GLOBAL ECOLOGY AND CONSERVATION,44,13.
MLA Xiang, Mingxue,et al."The effects of grazing and fencing on grassland productivity and diversity in alpine grassland ecosystem in the Tibetan highland".GLOBAL ECOLOGY AND CONSERVATION 44(2023):13.

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来源：地理科学与资源研究所

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