干旱地区农业研究2011，Vol.29Issue(3)：233-239,7.
气象因子对祁连山北坡天然草地土壤水分动态变化的影响
Influence of meteorological factors on the dynamic changes of soil moisture of natural grassland in the northern slopes of the Mountains Qilian
摘要
Abstract
We conducted a field study by regression and correlation analysis to examine the relationships between soil moisture and meteorological factors for five kinds of grassland in the northern slopes of the Mountains Qilian; and soil moisture was collected from the study site along with synchronous meteorological data in 2004 for analysis. The results showed that (1) Dynamic change of soil moisture was determined by precipitation and its seasonal distribution, and regression equation between precipitation and soil moisture were set up. (2) The potential evapotranspiration of five types of grassland was analysed based on ASCE-PM model. The relationship between potential evapetranspiration and soil moisture in 0 ～ 20 cm soil layer was significant(P ＜ 0.05). But there was no correlation between potential evapotranspiration and other soil layers. (3) Air temperature, soil temperature, relative humidity and near-ground wind speed exert an influence on soil moisture, and the responses of soil moisture to these factors were descending along the soil layer depth.关键词
气象因子/天然草地/潜在蒸散量/土壤含水量/祁连山Key words
meteorological factor/ natural grassland/ potential evapotranspiration/ soil moisture content/ Mountains Qilian分类
农业科技引用本文复制引用
黄德青,于兰,张耀生,赵新全..气象因子对祁连山北坡天然草地土壤水分动态变化的影响[J].干旱地区农业研究,2011,29(3):233-239,7.基金项目
国家科技支撑计划项目(2009BAC61B03-1,2006BAC01A02) （2009BAC61B03-1,2006BAC01A02）
中国科学院西部行动计划项目(KZCX2XB20601) （KZCX2XB20601）
中国科学院知识创新工程重大项目(kzcx1-09-01) （kzcx1-09-01）
中国科学院西北高原生物研究所知识创新重点研究领域项目(cjc020144) （cjc020144）
