Large-Scale Analysis of the Spatiotemporal Changes of Net Ecosystem Production in Hindu Kush Himalayan Region
文献类型：期刊论文
| 作者 | Guo, Da2,3; Song, Xiaoning2,3; Hu, Ronghai2,3; Zhu, Xinming2,3; Jiang, Yazhen4; Cai, Shuohao2,3; Zhang, Yanan2,3; Cui, Xiaoyong1,3 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 13期号:6页码:16 |
| 关键词 | large scale net ecosystem production spatiotemporal analysis high-elevation grasslands |
| DOI | 10.3390/rs13061180 |
| 通讯作者 | Song, Xiaoning(songxn@ucas.ac.cn) |
| 英文摘要 | The Hindu Kush Himalayan (HKH) region is one of the most ecologically vulnerable regions in the world. Several studies have been conducted on the dynamic changes of grassland in the HKH region, but few have considered grassland net ecosystem productivity (NEP). In this study, we quantitatively analyzed the temporal and spatial changes of NEP magnitude and the influence of climate factors on the HKH region from 2001 to 2018. The NEP magnitude was obtained by calculating the difference between the net primary production (NPP) estimated by the Carnegie-Ames Stanford Approach (CASA) model and the heterotrophic respiration (Rh) estimated by the geostatistical model. The results showed that the grassland ecosystem in the HKH region exhibited weak net carbon uptake with NEP values of 42.03 gC center dot m(-2)center dot yr(-1), and the total net carbon sequestration was 0.077 Pg C. The distribution of NEP gradually increased from west to east, and in the Qinghai-Tibet Plateau, it gradually increased from northwest to southeast. The grassland carbon sources and sinks differed at different altitudes. The grassland was a carbon sink at 3000-5000 m, while grasslands below 3000 m and above 5000 m were carbon sources. Grassland NEP exhibited the strongest correlation with precipitation, and it had a lagging effect on precipitation. The correlation between NEP and the precipitation of the previous year was stronger than that of the current year. NEP was negatively correlated with temperature but not with solar radiation. The study of the temporal and spatial dynamics of NEP in the HKH region can provide a theoretical basis to help herders balance grazing and forage. |
| WOS关键词 | CARBON-DIOXIDE EXCHANGE ; CO2 EXCHANGE ; INTERANNUAL VARIABILITY ; TERRESTRIAL ECOSYSTEMS ; ALPINE MEADOW ; VEGETATION GROWTH ; SOIL RESPIRATION ; TIBETAN PLATEAU ; CHINA ; CLIMATE |
| 资助项目 | funds for International Cooperation and Exchange of National Natural Science Foundation of China[31761143018] ; Special Project of National Natural Science Foundation of China[42041005] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK0302] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000651929100001 |
| 出版者 | MDPI |
| 资助机构 | funds for International Cooperation and Exchange of National Natural Science Foundation of China ; Special Project of National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/162497]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Song, Xiaoning |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Yanshan Earth Crit Zone & Surface Fluxes Res Stn, Beijing 101408, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Da,Song, Xiaoning,Hu, Ronghai,et al. Large-Scale Analysis of the Spatiotemporal Changes of Net Ecosystem Production in Hindu Kush Himalayan Region[J]. REMOTE SENSING,2021,13(6):16. |
| APA | Guo, Da.,Song, Xiaoning.,Hu, Ronghai.,Zhu, Xinming.,Jiang, Yazhen.,...&Cui, Xiaoyong.(2021).Large-Scale Analysis of the Spatiotemporal Changes of Net Ecosystem Production in Hindu Kush Himalayan Region.REMOTE SENSING,13(6),16. |
| MLA | Guo, Da,et al."Large-Scale Analysis of the Spatiotemporal Changes of Net Ecosystem Production in Hindu Kush Himalayan Region".REMOTE SENSING 13.6(2021):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
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