摘要
测定乔木蒸腾耗水量，一般采用快速称重等方法，既费时又难于保证精度。利用热脉冲原理，通过测定树干水流速度，是一种易于实施且效果较好的方法。为了研究整个林分的蒸腾耗水，该文对油松生物量的配置和结构进行了研究。结果表明，在各器官（根、干、枝）输导木质部断面积间，以及与针叶量的关系等５个方面，均存在良好的线性关系。
Determination of water consumption of a stand for transpiration is time-consuming anddifficulty to secure precision using the methods adopted earlier such as fast weighting method,butis more convenient to carry out and very effective through measuring water flow in tree stem,usingthe method of thermal impulse. In order to determining water consumption at the level of stand,it isnecessary to study the biomass distribution and structure of forest tree.The results of the study con-ducted in this paper show that there exist strict linear relations between the areas of the conductingxylem cross-section of different organs(S),as well as between S and the biomass of needle.
出处
《水土保持学报》
CSCD
北大核心
1994年第4期1-3,共3页
Journal of Soil and Water Conservation
基金
中国科学院
水利部西北水土保持研究所与俄罗斯科学院植物研究所等合作研究项目
关键词
油松
结构组织
蒸腾耗水量
Chinese pine structural organization water consumption for transpiration
