]*>","")" /> Analysis on Correlation between Day Process of Stem Diameter and Sap Flow Variations of Apocynum venetum L. and Their Environmental Factors
Xinjiang Agricultural Sciences

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Analysis on Correlation between Day Process of Stem Diameter and Sap Flow Variations of Apocynum venetum L. and Their Environmental Factors

LU Xing-hui;PAN Cun-de   

  • Received:2009-01-25 Revised:2009-01-25 Online:2009-01-25 Published:2009-01-25

罗布麻茎直径和茎流变化日过程及其与环境因子的关系分析

路兴慧;潘存德   

  1. 新疆农业大学林学院,乌鲁木齐,830052





摘要： 采用以色列PhyTech公司生产的Phytalk植物生理生态监控系统,对生长在塔里木河下游极端干旱环境条件下的半灌木植物罗布麻(Apocynum venetum L.)的茎直径、茎流变化日过程及其环境因子进行了同步监测,并对它们之间的关系进行了分析.结果表明:生长在极端干旱区的罗布麻茎直径变化日过程呈现出明显的昼夜变化规律,白天收缩,傍晚、夜间复原或膨胀,径差连日变化呈增长趋势,说明罗布麻能够在极端干旱的环境中正常生长;罗布麻茎直径变化主要受太阳总辐射、土壤湿度和风速的影响;罗布麻茎流日变化呈单峰型曲线,且夜间仍保持一定流速,茎流变化受饱和水汽压差、太阳总辐射、土壤湿度和空气温度的影响.