Energy exchange of an alpine grassland on the eastern Qinghai-Tibetan Plateau (SCI)
文献类型：期刊论文
| 作者 | Shang L. Y.; Zhang Y.; Lu S. H.; Wang S. Y. |
| 刊名 | Science Bulletin
 |
| 出版日期 | 2015 |
| 卷号 | 60期号:4页码:435-446 |
| 英文摘要 | The seasonal variability in the surface energy exchange of an alpine grassland on the eastern Qinghai-Tibetan Plateau was investigated using eddy covariance measurements. Based on the change of air temperature and the seasonal distribution of precipitation, a winter season and wet season were identified, which were separated by transitional periods. The annual mean net radiation (R-n) was about 39 % of the annual mean solar radiation (R-s). R-n was relatively low during the winter season (21 % of R-s) compared with the wet season (54 % of R-s), which can be explained by the difference in surface albedo and moisture condition between the two seasons. Annually, the main consumer of net radiation was latent heat flux (LE). During the winter season, sensible heat flux (H) was dominant because of the frozen soil condition and lack of precipitation. During the wet season, LE expended 66 % of R-n due to relatively high temperature and sufficient rainfall coupled with vegetation growth. Leaf area index (LAI) had important influence on energy partitioning during wet season. The high LAI due to high soil water content (theta(v)) contributed to high surface conductance (g(c)) and LE, and thus low Bowen ratio (beta). LE was strongly controlled by R-n from June to August when g(c) and theta(v) were high. During the transitional periods, H and LE were nearly equally partitioned in the energy balance. The results also suggested that the freeze-thaw condition of soil and the seasonal distribution of precipitation had important impacts on the energy exchange in this alpine grassland. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.casnw.net/handle/362004/27527]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Shang L. Y.,Zhang Y.,Lu S. H.,et al. Energy exchange of an alpine grassland on the eastern Qinghai-Tibetan Plateau (SCI)[J]. Science Bulletin,2015,60(4):435-446. |
| APA | Shang L. Y.,Zhang Y.,Lu S. H.,&Wang S. Y..(2015).Energy exchange of an alpine grassland on the eastern Qinghai-Tibetan Plateau (SCI).Science Bulletin,60(4),435-446. |
| MLA | Shang L. Y.,et al."Energy exchange of an alpine grassland on the eastern Qinghai-Tibetan Plateau (SCI)".Science Bulletin 60.4(2015):435-446. |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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