干旱地区陆面过程的研究

Studies on Terrestrial Interface Processes in Arid Areas

本文首先阐明了干旱地区水热循环对研究全球气候与区域经济的重要性，然后从物理上论证如何将土壤分层，并分析了预测温度变化与水分运动的数学模型中，数值方法的稳定性，我们进一步讨论了计算干旱区蒸发的方法。作为例子，我们数值模拟了新疆阿克苏站及宁夏沙坡头站的水分能量循环。模拟结果表明，这些干旱地区的陆面过程是相当典型的。种植耐旱植物可以在一定程度上减轻不利的自然条件。

In the present paper,We have elucidated the importance of energy and water cycling in arid areas to investigate global climate and local economics at first. Then,the physical arguments how we stratify the soil and the stability of numerical scheme in the mathematical model for predicting temperature variation and water motion are concerned with. Furthermore,We have discussed the methods to estimate evaporation in arid areas.As case studies,the numerical simulation of energy and water cycling at the Acsu Observatory, CAS, Xinjian province and Shapuotou Observatory, CAS, Ningxia Province are conducted. The results show that the laws of terrestrial processes are rather typical in these arid areas. Planting drought-endurable trees can alleviate unfavorable conditions to a certain extent.