]*>","")" /> Contrastive Analysis on Transpiration Water Consumption between Haloxylon persicum and Tamarix elongate in Arid Regions

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Contrastive Analysis on Transpiration Water Consumption between Haloxylon persicum and Tamarix elongate in Arid Regions

LIANG Feng-chao;ZHANG Xin-ping;ZHANG Yu-tao;AN Wen-ming;SHI Qing-dong   

  • Received:2011-05-25 Revised:2011-05-25 Online:2011-05-25 Published:2011-05-25

干旱区荒漠梭梭柽柳蒸腾耗水对比分析

梁凤超;张新平;张毓涛;安文明;师庆东   

  1. 新疆大学,绿洲生态教育部重点实验室,干旱生态环境研究所,乌鲁木齐830046;新疆林业科学院森林生态研究所,乌鲁木齐,830000

摘要: [目的]在克拉玛依造林碳汇基地外围,对比分析梭梭和柽柳蒸腾耗水的差异性.[方法]使用包裹式茎流计(Flow4)对梭梭(Haloxylon persicum)和柽柳(Tamarix elongata)枝液流动态进行了监测.对液流速率和枝直径进行相关性分析和回归分析.[结果]梭梭和柽柳枝液流速率同枝直径达到显著相关,可分别使用幂函数和指数函数进行拟合.在1.0~3.0 cm的枝直径范围内,柽柳的液流速率大于梭梭,液流速率均随枝直径的增大呈减小,液流速率的差异在减小.[结论]在1.0~3.0 em的径级范围内梭梭抗旱能力强于柽柳,随着植株的生长梭梭和柽柳抗旱能力增强,柽柳抗旱能力同梭梭的差距逐渐变小.