华北石质山区乔、灌木耗水特征比较  

The comparison of shrub's and arbor's water-consumption characteristics in the rocky mountainous area of north China

作　　者：史文兵 刘春鹏[2] 马长明[3] 司国玉 孙双印 

机构地区：[1]河北省塞罕坝机械林场,河北围场068450 [2]河北省林业科学研究院,河北石家庄050061 [3]河北农业大学林学院,河北保定071000

出　　处：《河北林果研究》2012年第3期302-308,共7页Hebei Journal of Forestry and Orchard Research

基　　金：河北省林业科研指导计划项目(1126419)

摘　　要：本研究采用热扩散式液流探针(TDP)法对华北石质山区黄连木、刺槐、酸枣、荆条的树干液流进行了监测。结果表明:(1)4树种的树干液流均呈现"几"字形,其中黄连木呈单峰型,刺槐呈宽峰型,酸枣荆条呈波动状;液流启动黄连木的最早,酸枣和荆条的居中,刺槐最晚;液流停滞黄连木和刺槐晚于酸枣和荆条;液流速度大小为:黄连木>酸枣>荆条>刺槐,日均耗水量为:黄连木>刺槐>酸枣>荆条。(2)4树种树干液流变化阴天时要比晴天时平缓,液流启动晴天早于阴天,而停滞则晴天晚于阴天。(3)不同树干直径的各树种树干液流变化波形基本一致;黄连木树干液流直径大的启动晚,而停滞早,而刺槐则相反;酸枣和荆条不同直径的液流启动与停滞时间几乎一致;除刺槐外,各树种树干液流速度均表现为直径大的小于直径小的,而刺槐则相反;各树种日均耗水量均表现树干直径大的耗水量大。The stem sap flow of native trees arbors（Pistacia chinensis;Robinia pseudoacacia） and shrubs（Zizyphus jujube;Vitex negundo var.heterophylla） in the rocky mountainous area of north China was continuously detected with the thermal dissipation probe（TDP） to study their water-consumption characteristics in this research.The result reveals：（1） the variation of stem sap flow velocity of four plants can be all described as a几-shaped curve,with the diurnal variations of sap flow velocity showing a single-peaked curve for Pistacia chinensis,broad-peaked curve for Robinia pseudoacacia and many-peaked curve for Zizyphus jujube and Vitex negundo var.heterophylla;the sap flow of Pistacia chinensis started earliest,followed by Zizyphus jujube and Vitex negundo var.heterophylla,with the Robinia pseudoacacia the latest;the sap flow of Pistacia chinensis and Robinia pseudoacacia stopped later than that of Zizyphus jujube and Vitex negundo var.heterophylla and the order of the sap flow velocity was Pistacia chinensisZizyphus jujubaVitex negundovar.heterophyllaRobinia pseudoacacia,and the order of the average of daily water consumption was Pistacia chinensisRobinia pseudoacaciaZizyphus jujubaVitex negundo var.heterophylla.（2）The variation extent of stem sap flow of four plants was smaller in cloudy days than in sunny days,with the sap flow starting earlier and stopping later in sunny days than in cloudy days.（3） For four plants with different diameter,the variation extent of stem sap flow was similar;the sap flow of Pistacia chinensis started later and stopped earlier with larger diameter than that with smaller diameter while that of Robinia pseudoacacia started earlier and stopped later with larger diameter than with smaller diameter;however,that of Zizyphus jujube and Vitex negundo var.heterophylla with different diameter started and stopped similarly,which was very contrary to that of Robinia pseudoacacia.The sap flow velocity of all plants was smaller with larger diameter than with smaller diameter a

关 键 词：树干液流 热扩散式探针法(TDP) 耗水量 

分 类 号：S715[农业科学—林学]