Clipping increases ecosystem carbon use efficiency by decreasing the dominance of grasses
文献类型：期刊论文
| 作者 | Yan, Yingjie3; Quan, Quan; Wang, Jinsong; Zhang, Ruiyang; Zhou, Qingping1; Niu, Shuli3 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 334页码:109421 |
| 关键词 | Ecosystem carbon use efficiency Clipping Climate warming Dominant functional group Qinghai-tibetan plateau Alpine meadow |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2023.109421 |
| 文献子类 | Article |
| 英文摘要 | Ecosystem carbon use efficiency (CUE) is a critical variable in quantifying the efficiency and capacity of an ecosystem to sequestrate carbon (C) from the atmosphere. However, how CUE responds to land-use change and climate warming remains elusive and lacks empirical evidence. We implemented a field manipulative experiment to examine the effects of clipping and warming on CUE in an alpine meadow on the Qinghai-Tibetan Plateau over 7 years. The results showed that clipping significantly increased CUE by 7.1%, which was mainly attributed to the stronger positive effects of clipping on gross ecosystem productivity (GEP, 13.0%) than on ecosystem respiration (ER, 5.3%). In contrast, warming had a minor effect on CUE due to the synchronized increase in GEP (8.8%) and ER (7.3%). There was no significant interactive effect of clipping and warming on CUE. Moreover, the dominance of grasses played a pivotal role in controlling the responses of CUE to clipping and warming by increasing ecosystem C uptakes but decreasing microbial decomposition. Soil temperature and above-ground net primary productivity also contributed to the changes in CUE under clipping and warming. These results suggest that clipping once a year at the end of the growing season could increase the efficiency of this alpine meadow for C sequestration, while climate warming could not change ecosystem C use efficiency. We highlight that the dominance of grasses is an emerging property in determining CUE under land-use change and climate warming in grasslands. |
| WOS关键词 | SOIL CO2 EFFLUX ; NUTRIENT AVAILABILITY ; SPECIES COMPOSITION ; PRODUCTIVITY ; RESPIRATION ; RESPONSES ; DIVERSITY ; FEEDBACK ; CYCLE ; PRECIPITATION |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000965079700001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/190462]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Univ Chinese Acad Sci, Dept Ecol & Environm, Beijing, Peoples R China 2.Southwest Univ Nationalities, Inst Qinghai Tibetan Plateau, Chengdu, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Yingjie,Quan, Quan,Wang, Jinsong,et al. Clipping increases ecosystem carbon use efficiency by decreasing the dominance of grasses[J]. AGRICULTURAL AND FOREST METEOROLOGY,2023,334:109421. |
| APA | Yan, Yingjie,Quan, Quan,Wang, Jinsong,Zhang, Ruiyang,Zhou, Qingping,&Niu, Shuli.(2023).Clipping increases ecosystem carbon use efficiency by decreasing the dominance of grasses.AGRICULTURAL AND FOREST METEOROLOGY,334,109421. |
| MLA | Yan, Yingjie,et al."Clipping increases ecosystem carbon use efficiency by decreasing the dominance of grasses".AGRICULTURAL AND FOREST METEOROLOGY 334(2023):109421. |
入库方式： OAI收割
来源：地理科学与资源研究所
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