On the attribution of changing pan evaporation in a nature reserve in SW China
文献类型：期刊论文
| 作者 | Yiping Zhang*
|
| 刊名 | Hydrological Processes
 |
| 出版日期 | 2013 |
| 卷号 | 27期号:18页码:2676-2682 |
| 关键词 | climate change pan evaporation adjusted PenPan model Ailaoshan National Nature Reserve |
| 中文摘要 | Negative trends of measured pan evaporation are widely reported. Studies of the factors that underlie this reduction in pan evaporation have not reached a consensus about the controlling factors. Most studies employ statistical analysis (correlation analysis or stepwise regression) to identify the controlling climatic variables; in contrast, few studies have employed physical-based theories. In addition, observations of pan evaporation and related climatic variables are reported to be influenced by anthropogenic activities. Consequently, the observed trends of climatic variables in a nature reserve would be useful for understanding regional climate change. The present study site is located in Ailaoshan National Nature Reserve, SW China, which is free of anthropogenic activity. In this study, we firstly applied the adjusted PenPan model to estimate the pan evaporation. Then, using this physical-based model, we identified a positive trend in pan evaporation, with a much larger increase in the dry season than in the wet season. The model results indicate that the change in the aerodynamic component is larger than that in the radiative component. In contrast to the reduction in wind speed and sunshine hours that has been reported in previous studies at various sites, we found that wind speed and sunshine hours have increased in recent decades, thereby explaining the increase of the pan evaporation rate. Wind speed made the greatest contribution to the change in pan evaporation, followed by sunshine duration. This study indicates that the potential evaporation has increased at this site despite the widely reported reduction in measured pan evaporation. During the dry season, the availability of water for agriculture and agroforestry could be threatened |
| 公开日期 | 2013-08-05 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/4650]  |
| 专题 | 西双版纳热带植物园_全球变化研究组 |
| 推荐引用方式 GB/T 7714 | Yiping Zhang*. On the attribution of changing pan evaporation in a nature reserve in SW China[J]. Hydrological Processes,2013,27(18):2676-2682. |
| APA | Yiping Zhang*.(2013).On the attribution of changing pan evaporation in a nature reserve in SW China.Hydrological Processes,27(18),2676-2682. |
| MLA | Yiping Zhang*."On the attribution of changing pan evaporation in a nature reserve in SW China".Hydrological Processes 27.18(2013):2676-2682. |
入库方式： OAI收割
来源：西双版纳热带植物园
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