摘要
用热脉冲速度记录仪(Heat Pulse Velocity Recorder,简称HPVR)研究了14年生四川桤木树干液流的特点,并用Campbell自动气象站同步监测环境因子研究了树干液流与环境因子的关系,结果表明:四川桤木的单位面积的年液流通量为11.107kg/cm2;夜间有上升液流,可能存在根压;四川桤木的树干液流在春季是单峰曲线,在夏季是一条双峰曲线,有"午休"现象;四川桤木的树干液流与太阳辐射、温度有较好的生态学同步性。
Thisarticle usesheat Pulse Velocity Recorder （HPVR）to study the characteristics ofsap flowof14-year old Alnus cremastogyme Burk ,and measures meteorological parameters and soil water contentsbymeans ofCampbellAutomatic WeatherStationin order toresearch on the relations ofsapflow and environmental fac-tors .The results show that ：（1）The intensity of sap flow of Alnus cremastogyme Burkis11 .107kg/cm2 per year ;（2）The flow rate still happensduring the night ,indicating that Alnus cremastogyme Burkmight have root pressure ;（3） The sap flow rate behaves as a single -peaked curve in spring ,a two -peaked curve in summer ;（4）The sap flow of Alnus cremastogyme Burkhave a good ecology synchronization with the solar radiation intensity and temperature .
出处
《绿色科技》
2013年第11期1-4,共4页
Journal of Green Science and Technology
基金
国家自然科学基金项目(编号:30560121)
国家林业局新技术储备项目"典型生态区哉森林生态系统动态监测技术开发与应用"资助
关键词
四川桤木
树干液流
热脉冲
alnus cremastogyme burk
sap flow
heat -pulse technology
