NEW METHOD OF SAP FLOW-RATE DETERMINATION IN TREES
NEW METHOD OF SAP FLOW-RATE DETERMINATION IN TREES
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DOI：
10.1007/bf02922390
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发表时间：
1973-01-01
影响因子：
1.5
通讯作者：
PENKA, M
中科院分区：
文献类型：
--
作者：
CERMAK, J;DEML, M;PENKA, M
本文描述了一种测定成年树树干液流速率的新方法，其中质量流量（在本例中为蒸腾通量）由传热测量估计。所使用的装置包括一对温度计在差分连接和板电极，通过控制的热量输入流入木质部的一个被研究的部分。该方法首先在实验室模拟系统上进行了测试，然后在一棵活的成年树prunus aviumL的茎上进行了测试。数据连续自动登记；因此，可以用更多的树木连续测量长时间的树液流速率。
A new method of sap flow rate determination in stems of adult trees is described in which mass flow (the transpiration flux in the present case) is estimated from a heat-transfer measurement. The device used includes a couple of thermometers in a differential connection and plate electrodes, through which a controlled heat input flows into a denned studied segment of the xylem. The present method was tested first with a laboratory simulating system, then with the stem of a living adult treePrunus aviumL. The data are registered continually and automatically; continuous measurement of sap flow rate of long duration with a greater number of trees is thus made possible.