| 用热扩散式茎流计测定园林树木蒸腾耗水量 |
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| 引用本文： | 王瑞辉,奚如春,徐军亮,马履一.用热扩散式茎流计测定园林树木蒸腾耗水量[J].中南林业科技大学学报,2006,26(2):7-12. |
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| 作者姓名： | 王瑞辉 奚如春 徐军亮 马履一 |
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| 作者单位： | 中南林业科技大学，北京林业大学，北京林业大学，北京林业大学 湖南长沙410004，北京林业大学，北京100083，北京100083，北京100083，北京100083 |
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| 基金项目： | 国家高技术研究发展计划(863计划);北京市自然科学基金;教育部重点实验室基金 |
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| 摘 要： | 采用热扩散式边材液流探针和环境自动监测系统对北京3种园林树木的树干液流及主要环境因子进行了一个生长季的同步观测.结果表明,3树种树干液流的日变化呈明显的单峰曲线,晴天的液流速率大于多云天和阴天,紫叶李和悬铃木的日耗水量明显大于元宝枫;对不同天气3树种每h的液流速率与相应的环境因子进行逐步回归分析.结果显示,影响3树种液流速率的主要环境因子是空气温度、空气相对湿度、辐射强度和5 cm土层温度,在不同天气里起主导作用的因子不同,环境因子与树干液流之间的数量关系能较好地预测树木的蒸腾耗水量.
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| 关 键 词： | 热扩散 树干液流 蒸腾耗水 环境因子 园林树木 |
| 文章编号： | 1000-2502(2006)02-0007-06 |
| 修稿时间： | 2005年11月9日 |
Measurement of the Water Consumption of Gardening Trees with Thermal Dissipation Sap Flow Probe (TDP) |
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| WANG Rui-hui,XI Ru-chun,XU Jun-liang,MA Ru-yi.Measurement of the Water Consumption of Gardening Trees with Thermal Dissipation Sap Flow Probe (TDP)[J].Journal of Central South Forestry University,2006,26(2):7-12. |
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| Authors: | WANG Rui-hui XI Ru-chun XU Jun-liang MA Ru-yi |
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| Abstract: | By using the thermal dissipation sap flow probe(TDP) and environmental auto-detecting system,measurement of the sap flow of three gardening trees in Beijing was conducted during the 2005-growing season.Results show that the daily course of sap flow is a single-peaked curve;that the velocity in clear days is higher than in cloudy days and under an overcast sky,and that the daily water consumption of Prunus cerasifera and Platanus hispanicq is higher than that of Acer truncatum.Results of statistical analyses indicate that air temperature,relative humidity,solar radiation and temperature of the soil 5 cm deep are the major factors affecting sap flow rate in different weather.With the relationship of sap flow rate to environmental factors,the amount of evapo-transpiration can be predicted. |
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| Keywords: | thermal dissipation probe stem sap flow water consumption environmental factors gardening trees |
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