| 孙福宝,杨大文,刘志雨,丛振涛.基于Budyko假设的黄河流域水热耦合平衡规律研究[J].水利学报,2007,38(4):409-416 |
| 基于Budyko假设的黄河流域水热耦合平衡规律研究 |
| Study on coupled water energy balance in Yellow River basin based on Budyko Hypothesis |
| |
| DOI： |
| 中文关键词: 水热耦合平衡 Budyko假设 流域水循环及水资源 潜在蒸发 实际蒸散发 |
| 英文关键词: coupled water energy Budyko Hypothesis hydrological cycle water resources potential evaporation actual evapotranspiration |
| 基金项目: |
|
| 摘要点击次数: 4027 |
| 全文下载次数: 490 |
| 中文摘要: |
| 本文通过对黄河流域内63个子流域的年降水、径流深及实际蒸散发和蒸发能力的分析，证实了基于Budyko假设的流域水热耦合平衡关系是成立的。根据各子流域的长期水量平衡结果拟合并检验了水热耦合平衡模型中的唯一参数，结果显示，该参数具有显著的区域分布规律，黄土高原区平均为3.22，青藏高原区平均为2.27。 同时，研究结果表明，模型参数综合反映了流域的下垫面条件，并提出了根据流域相对入渗能力、相对植被-土壤有效蓄水能力和流域平均坡度估算模型参数的经验公式。 |
| 英文摘要: |
| The validity of Budyko Hypothesis on coupled water energy balance in river basin is verified according to the analysis on the observation data of annual precipitation, runoff, evaporation and real evapotranspiration in 63 sub riverbasins of the Yellow River. The only one parameter of the model expressing the balance is obtained by fitting of the longterm water balance data. It is found that this parameter obviously varies in regions, which is 3.22 in loess plateau region and 2.27 in Qinghai Tibet plateau region respectively. Further study shows that this parameter comprehensively reflects the underlying condition of the land in the river basin to be studied. An empirical relationship for estimating the parameter from average slope, relative infiltration capacity and relative vegetation extractable soil water capacity of the river basin is established. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |