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应用热脉冲技术对胡杨树干液流变化规律的研究
Authors
白云岗,宋郁东,周宏飞,柴仲平
Publication date
1 January 2005
Publisher
Abstract
利用热脉冲技术对胡杨树干液流日变化、不同胸径树干液流流量、区域间耗水量的差异进行了分析。结果表明:在正常生长状态下,胡杨树干单位面积液流通量为0.450L·cm-2·d-1,在4~8月生长期内,日平均耗水量为78.335L/d。胡杨树干断面单位时间内液流量变化呈明显的昼夜节律,白天的流速变化曲线呈双峰型,夜间树干液流速度处于平稳的低值,白天10:00与午后18:00左右达到两个峰值。随着胸径的增大,树干液流速度和液流量也随之增大,不同研究区域、立地条件、个体、林种的胡杨耗水量差异十分显著
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016