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Grazing affects ecosystem traits by regulating plateau pika activities at the landscape scale

文献类型：期刊论文

作者Tang, Ze3,5; Zhang, Yangjian1,2,6; Zheng, Zhoutao2; Cong, Nan2; Zhu, Yixuan2; Chen, Yao4; Gao, Jie1,2; Zhu, Wenquan3
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2024-10-10
卷号946页码:174356
关键词Livestock grazing Pika burrowing Ecosystem trait Alpine meadow grassland UAV
DOI10.1016/j.scitotenv.2024.174356
产权排序4
文献子类Article
英文摘要The mechanism underlying the effects of livestock grazing on grassland ecosystem traits has been greatly discussed. However, as a common small burrowing mammal on the Tibetan Plateau grasslands, the plateau pika's (Ochotona curzoniae) influence on alpine grassland ecosystem traits has rarely been investigated, especially beyond the plot scale. In this study, we flew an unmanned aerial vehicle (UAV) over a grassland landscape under grazing and nongrazing treatments. Mounted visible spectral remote sensing, in combination with field surveys, was utilized to explore how livestock and pika grazing modify grassland ecosystem traits at the landscape scale on the Tibetan Plateau (TP). Using object-oriented classification and partial least squares regression, we retrieved the pika burrow distribution and grassland ecosystem traits. Then, the relationships among livestock grazing, pika burrowing and ecosystem traits were evaluated. The results indicated that livestock grazing reduces the alpine meadow community height by 0.13 cm and the species number by 0.25 while increasing the vegetation coverage by 9.69 % and the aboveground biomass (AGB) by 10.07 g/m2. A lower statue grassland community with greater coverage caused by livestock grazing promotes pika burrowing. Pika burrow density increases 100/ ha per 1.70 % increase in vegetation coverage, a 1.87 g/m2 increase in AGB or a 0.08 m decrease in community height. Under livestock grazing, both community structure and nutrients are more strongly associated with pika burrow density. The structural equation model demonstrated that livestock grazing regulates pika burrow density by moderating structural value and subsequently affecting nutritional value. Pika burrowing activity explains 40 % of the total variation in nutritional value. Our findings revealed an intrinsic linkage between mammal activities and alpine grassland ecosystems, which can provide guidelines for grassland management through pika population control by adjusting grazing intensity on the TP.
WOS关键词QINGHAI-TIBETAN PLATEAU ; ALPINE MEADOW ; RANGELAND DEGRADATION ; OCHOTONA-CURZONIAE ; IMAGE SEGMENTATION ; VEGETATION ; CLASSIFICATION ; DISTURBANCE ; RESPONSES ; PATTERNS
WOS研究方向Environmental Sciences & Ecology
WOS记录号WOS:001266284100001
源URL[http://ir.igsnrr.ac.cn/handle/311030/206031]  
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Zhang, Yangjian
作者单位1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
3.Beijing Normal Univ, Fac Geog Sci, Beijing 100875, Peoples R China
4.Henan Univ, Sch Life Sci, Int Joint Res Lab Global Change Ecol, Kaifeng 475004, Peoples R China
5.Chinese Acad Environm Planning, Ctr Ecoenvironm Accounting, Beijing 100041, Peoples R China
6.Hebei Univ, Inst Life Sci & Green Dev, Sch Life Sci, Baoding 071002, Peoples R China
推荐引用方式
GB/T 7714		 Tang, Ze,Zhang, Yangjian,Zheng, Zhoutao,et al. Grazing affects ecosystem traits by regulating plateau pika activities at the landscape scale[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,946:174356.
APA Tang, Ze.,Zhang, Yangjian.,Zheng, Zhoutao.,Cong, Nan.,Zhu, Yixuan.,...&Zhu, Wenquan.(2024).Grazing affects ecosystem traits by regulating plateau pika activities at the landscape scale.SCIENCE OF THE TOTAL ENVIRONMENT,946,174356.
MLA Tang, Ze,et al."Grazing affects ecosystem traits by regulating plateau pika activities at the landscape scale".SCIENCE OF THE TOTAL ENVIRONMENT 946(2024):174356.

入库方式： OAI收割

来源：地理科学与资源研究所

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