地理学报 ›› 1988, Vol. 55 ›› Issue (2): 169-175.doi: 10.11821/xb198802009

• 论文 • 上一篇    下一篇

蒸发量与土壤湿度和地下通量关系的模式

陈科信   

  1. 上海市水利局
  • 出版日期:1988-04-15 发布日期:1988-04-15

EVAPORATION MODEL IN RELATION WITH SOIL MOISTURE AND FIUX OF GROUNDWATER

Chen Kexing   

  1. Shanghai Bureau of Water Conservancy
  • Online:1988-04-15 Published:1988-04-15

摘要: 土壤水分和蒸发量是水文循环和能量交换过程中一项重要因素。本文根据非饱和土壤水流运动的基本理论,考虑到在地下水位较高的湿润地区,蒸发层中土壤湿度可以得到地下水的补给,作者提出蒸发量与土壤湿度和地下水通量关系的模式。模式中为单一土壤吸力函数,在实际计算中十分简便。

关键词: 蒸发量, 土壤湿度, 土壤吸力, 地下水通量, 毛管导水率

Abstract: Soil moisture and evaporation are important factors in process of hydrologic cycle and energy transformation. Considering the wet region with high groundwater table, the writer put forward an evaporation model in relation with soil moisture and flux of groundwater based on the fundamental principle of water movement in the unsaturated soil and water supply to the evaporation layer from groundwater. As there is a single function of soil suction in the model, the physical calculation is quite simple.

Key words: Evaporation, Soil moisture, Soil suction, Flux of groundwater, Capil-lary conductivity