Quantifying Terrestrial Ecosystem Carbon Dynamics in the Jinsha Watershed, Upper Yangtze, China from 1975 to 2000
文献类型：SCI/SSCI论文
| 作者 | Zhao S. Q. ; Liu S. G. ; Yin R. S. ; Li Z. P. ; Deng Y. L. ; Tan K. ; Deng X. Z. ; Rothstein D. ; Qi J. G. |
| 发表日期 | 2010 |
| 关键词 | General Ensemble biogeochemical Modeling System (GEMS) Carbon flux Carbon stock Climate change Land use and land cover change (LUCC) Jinsha watershed net primary production land-use forest biomass climate-change process model soil productivity storage cycle deforestation |
| 英文摘要 | Quantifying the spatial and temporal dynamics of carbon stocks in terrestrial ecosystems and carbon fluxes between the terrestrial biosphere and the atmosphere is critical to our understanding of regional patterns of carbon budgets. Here we use the General Ensemble biogeochemical Modeling System to simulate the terrestrial ecosystem carbon dynamics in the Jinsha watershed of China's upper Yangtze basin from 1975 to 2000, based on unique combinations of spatial and temporal dynamics of major driving forces, such as climate, soil properties, nitrogen deposition, and land use and land cover changes. Our analysis demonstrates that the Jinsha watershed ecosystems acted as a carbon sink during the period of 1975-2000, with an average rate of 0.36 Mg/ha/yr, primarily resulting from regional climate variation and local land use and land cover change. Vegetation biomass accumulation accounted for 90.6% of the sink, while soil organic carbon loss before 1992 led to a lower net gain of carbon in the watershed, and after that soils became a small sink. Ecosystem carbon sink/source patterns showed a high degree of spatial heterogeneity. Carbon sinks were associated with forest areas without disturbances, whereas carbon sources were primarily caused by stand-replacing disturbances. It is critical to adequately represent the detailed fast-changing dynamics of land use activities in regional biogeochemical models to determine the spatial and temporal evolution of regional carbon sink/source patterns. |
| 出处 | Environmental Management |
| 卷 | 45 |
| 期 | 3 |
| 页 | 466-475 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0364-152X |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22288]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhao S. Q.,Liu S. G.,Yin R. S.,et al. Quantifying Terrestrial Ecosystem Carbon Dynamics in the Jinsha Watershed, Upper Yangtze, China from 1975 to 2000. 2010. |
入库方式： OAI收割
来源：地理科学与资源研究所
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