Has the Dominant Climatic Driver for the Carbon Budget of Alpine Grassland Shifted from Temperature to Precipitation on the Qinghai-Tibet Plateau?
文献类型：期刊论文
| 作者 | Hu, Zhigang; Niu, Ben; Tang, Jiwang; Zhang, Yu; Xiang, Mingxue; Zhang, Xianzhou |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2023-05-09 |
| 卷号 | 15期号:10页码:2492 |
| 关键词 | alpine grassland carbon budget climate change legacy effect Qinghai-Tibet Plateau |
| ISSN号 | 2072-4292 |
| DOI | 10.3390/rs15102492 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | The alpine grassland on the Qinghai-Tibet Plateau (AG(QTP)) has undergone severe climate change. Although the carbon budget of AG(QTP) proved to have altered significantly, the spatiotemporal dynamics and the driving mechanism of the changes remain debated. This study estimated the gross primary productivity (GPP), ecosystem respiration (ER), and net ecosystem productivity (NEP) of the AG(QTP), based on remote sensing models, and analyzed their spatiotemporal dynamics and their climatic driving mechanism. Our results showed that the GPP, ER, and NEP increased at rates of 0.002 Pg C yr(-2), 0.013 Pg C yr(-2), and 0.0007 Pg C yr(-2), respectively, during 2000-2020, with substantial spatiotemporal variability. The changes in GPP were influenced by both temperature and precipitation, while NEP and ER were primarily affected by precipitation and temperature, respectively. However, the primary climatic driver of the carbon budget may have shifted from temperature to precipitation around 2010, and the impact of temperature on carbon sink was limited by local water conditions. Furthermore, we found that climate change, particularly precipitation variation, had notable legacy effects on the carbon budget of the AG(QTP). Our findings highlight that the climatic impact on the carbon budget is dynamic and long-lasting, rather than static and short-lived, which should be considered in ecosystem carbon budget simulations and other related studies. |
| 学科主题 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS关键词 | GROSS PRIMARY PRODUCTION ; ECOSYSTEM RESPIRATION ; NORTHERN CHINA ; DECOMPOSITION ; RESPONSES ; DYNAMICS ; LITTER ; FLUXES ; PHENOLOGY ; EXCHANGE |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/193818]  |
| 专题 | 拉萨站高原生态系统研究中心_外文论文 |
| 作者单位 | 1.University of Chinese Academy of Sciences, CAS 2.Institute of Geographic Sciences & Natural Resources Research, CAS 3.Chinese Academy of Sciences |
| 推荐引用方式 GB/T 7714 | Hu, Zhigang,Niu, Ben,Tang, Jiwang,et al. Has the Dominant Climatic Driver for the Carbon Budget of Alpine Grassland Shifted from Temperature to Precipitation on the Qinghai-Tibet Plateau?[J]. REMOTE SENSING,2023,15(10):2492. |
| APA | Hu, Zhigang,Niu, Ben,Tang, Jiwang,Zhang, Yu,Xiang, Mingxue,&Zhang, Xianzhou.(2023).Has the Dominant Climatic Driver for the Carbon Budget of Alpine Grassland Shifted from Temperature to Precipitation on the Qinghai-Tibet Plateau?.REMOTE SENSING,15(10),2492. |
| MLA | Hu, Zhigang,et al."Has the Dominant Climatic Driver for the Carbon Budget of Alpine Grassland Shifted from Temperature to Precipitation on the Qinghai-Tibet Plateau?".REMOTE SENSING 15.10(2023):2492. |
入库方式： OAI收割
来源：地理科学与资源研究所
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