绕阳河上游流域土壤水量平衡与植被旱度的研究

Water Equilibrium and Drought Degree of Plant Cover in the Upper Reaches of Raoyang River Watershed

以流域为研究单元,采用水量平衡与估算法相结合的潜在蒸散修正模型,定量分析了绕阳河上游流域不同水平年水量平衡的月值和年值。结果表明,绕阳河上游流域水量平衡中蒸散是水分输出的主要形式。因蒸发力大,植被干旱严重。

Taken the watershed in the upper reaches of Raoyang River as a study area, the annual water equilibrium was calculated by using a modified model of stand evapotranspiration, which was a combined method of water equilibrium and estimation. The results showed that the evapotranspiration was the main form of water output in the upper reaches of Raoyang River Watershed. The plant cover in this region was seriously affected by drought due to strong evaporation.