img

官方微信

高级检索

中国沙漠 ›› 1996, Vol. 16 ›› Issue (4): 388-391.

• 研究论文 • 上一篇    下一篇

干旱沙区陆面蒸散量与土壤水分关系的数值计算

王新平, 张利平, 刘立超, 黄子琛, 刘新民   

  1. 中国科学院兰州沙漠研究所, 兰州 730000
  • 收稿日期:1995-09-22 修回日期:1996-01-22 出版日期:1996-12-20 发布日期:1996-12-20
  • 作者简介:王新平,男,1969年生,1992年毕业于甘肃农业大学水利系,从事干旱区水资源研究工作。
  • 基金资助:
    本文得到国家"八五"攻关项目资助

NUMERICAL CALCULATION OF THE RELATIONSHIP BETWEEN EVAPOTRANSPIRATION AND SOIL MOISTURE IN ARID SANDY REGION

Wang Xinping, Zhang Liping, Liu Lichao, Huang Zichen, Liu Xinming   

  1. Institute of Desert Research, Academia Sinica, Lanzhou 730000
  • Received:1995-09-22 Revised:1996-01-22 Online:1996-12-20 Published:1996-12-20

摘要: 利用电子称重式蒸渗仪(Lysimeter)测定田间蒸散量(ET), 并用中子水分仪同步测定沙面下10~150cm土壤水分含量, 求得含水率W(%)。通过研究沙区不同植被区域内, 土壤剖面不同深度土体含水率WET的关系, 估算出了三种处理(油蒿栽植区、柠条栽植区、裸露沙区)的不同深度土壤水分对蒸散过程的贡献值, 模拟出了土壤含水量对区域陆面蒸散量的相关关系式。

关键词: 陆面蒸散量, 土壤水分, 数值计算

Abstract: In the fixed site experiment, the Lysimeter and the neutron probe were used to measure the field evapotranspiration(ET) and the soil moisture(W) respectively. With 3 Treatments-(1) Artemisia ordosica region,(Ⅱ) Caragana korshisinkii region, and (Ⅲ) bare sandy region, the relationships between E T and W of different layers in each treatment have been analysed. Meanwhile, the affecting value of soil moisture in every 10 cm layer from 0~150 cm has been calculated, and the relative functions between ET and W of different fields have been simulated.

Key words: Evapotranspiration, Soil moisture, Numerical calculation