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
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
  
DOI：10.7606/j.issn.1000-7601.2011.03.43
中文关键词:  气象因子  天然草地  潜在蒸散量  土壤含水量  祁连山
英文关键词:meteorological factor  natural grassland  potential evapotranspiration  soil moisture content  Mountains Qilian
基金项目:国家科技支撑计划项目(2009BAC61B03-1,2006BAC01A02)；中国科学院西部行动计划项目(KZCX2XB20601)；中国科学院知识创新工程重大项目(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)
作者单位
黄德青 Northwest Institute of Plateau Biology, Chinese Academy of Sciences/ Key Laboratory of Adqptation and Exolution of Plateau Biota, Xining， Qinghai 810001，China
Department of Chemnistry and Technology, Guilin Normnal College, Guilin，Guangxi 541002，China 
于兰 School of Basic Medicine Science，Guilin Medical College， Guilin, Guangxi 541004，China 
张耀生 Northwest Institute of Plateau Biology, Chinese Academy of Sciences/ Key Laboratory of Adqptation and Exolution of Plateau Biota, Xining， Qinghai 810001，China 
赵新全 Northwest Institute of Plateau Biology, Chinese Academy of Sciences/ Key Laboratory of Adqptation and Exolution of Plateau Biota, Xining， Qinghai 810001，China 
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中文摘要:
      利用2004年祁连山北坡五类天然草地生长季的土壤水分数据和同期的气象资料,以回归和相关分析的方法分析了气象因子对五类天然草地土壤水分动态变化的影响。结果表明:(1)土壤水分的动态主要受降水量及其季节分配的影响,并建立了降水量对土壤含水量的回归方程;(2)利用ASCE-PM模型计算了五类草地群落的潜在蒸散量,潜在蒸散量对0~20 cm土层水分含量影响显著(P<0.05),而愈向土壤深层,影响愈不明显;(3)土壤含水量对气温、土壤温度、相对湿度和近地面风速的响应由土壤表层至深层均呈递减趋势。
英文摘要:
      We conducted a field study by regresson and correlation analysis to examine the relationships between soil moisture and meteorological factors for five kinds of grassland in the northem 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 re-gression equation between precipitation and soil moisture were set up. (2) The potential evapotranspiration of five types of grassland was analysed based on ASCEPM model. The relat ionship between potential evapotranspirat ion and soil mois-ture 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 in-fluence on soil moisture, and the responses of soil moisture to these factors were descending along the soil layer depth.
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