摘要
根据最近十多年应用氚水法测定树木蒸腾量有关资料,为了使此方法更为完善得予广泛应用,笔者于1985、1986两年通过对针叶树(红松)和阔叶树(柞树、杨树和桦树)的实验研究,进行了不同方法和准确度的比较和评价。例如氚水的引入方式和引入量,取样方法和取样部位等。考虑到氚水在树木体内的分布特点,应使氚水在木质部内均匀混合,取样部位也因随不同树种,不同环境条件而异。研究结果证明,氚水方法同其它方法比较确是一种测定林木蒸腾作用的切实可行的简便方法。
For more perfect and more extensive usage of the method. according to the references about the application of 3H_2O method in the measurement of transpiration of tree over last ten years, and through the experiments in the coniferous tree Pinus Koraiensis and broadleaf tree Ouercus sp., Populus sp., and Betula sp. in 1985—1986, comparisions and reviews were done on the different methods and their accuracy,such as the method and quantity of the introduction of 3H_2O, sampling method and position and so on. Taking the characteristic of 3H_2O distribution into account, we should make it blend even in ovlem, and sampling position should be different with different species of tree and environmental conditions. The results showed that,compared with other mothod, 3H_2O method was the simple and feasible one in the measuremnet of transpiration of tree.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1990年第3期105-113,共9页
Journal of Northeast Forestry University
关键词
氚水
蒸腾作用
林木
示踪剂
放射性
Tritiated Water
Tracer
Transpiration
Radioactivity
