Water transportation between soil and groundwater in soda saline soil system in summer
-
摘要: 通过野外定位观测,分析了苏打碱土土壤水和地下水的转化规律。微地貌格局是制约水分迁移的主要因素,并由此形成了土壤水-地下水转化的特殊模式。雨季,坡地土壤(苏打碱土)的整个土层含水率变化不显著,地表径流为水分迁移的关键环节;洼地土壤(盐化草甸土)成为地表水和地下水转化的通道,大量洼地积水垂直下渗,补给地下水。运用Vensim对土壤水-地下水的转化过程进行了模拟,结果与观测数据基本一致。Abstract: Based on in-situ observation, transportation feature of a saline soil system among atmosphere, soil water and groundwater was analyzed. The main constrain of soil water transportation was the pattern of micro relief, resulting in special transform model of groundwater-soil water-atmosphere water. Enrichment of soil moisture at the micro-slope (sodic saline soil) was not significant. Surface runoff is the key procedure of soil transportation. Micro basin (saline meadow soil) became channel of surface runoff and groundwater, where vast water transported in vertical direction into groundwater. Vensim software was applied to simulate the transform process between groundwater, soil water and atmosphere. The simulation result is in agreement with observed value.
-
Key words:
- soil profile /
- water transportation /
- system simulation /
-
-
计量
- 文章访问数: 950
- PDF下载数: 1
- 施引文献: 0
下载: