热带亚热带植物学报Issue(6)：537-548,12.DOI:10.11926/j.issn.1005-3395.2014.06.001
华南地区常见树种导管特征与树干液流的关系
Relationship between Vessel Characteristics and Sap Flow of Eight Subtropical Tree Species
摘要
Abstract
In order to understand the relationship between tree structure and its function, the vessel characters of sap wood of eight tree species,Acacia auriculaeformis,Schima superba,Michelia macclurei,Castanopsis hystrix, C. fissa,A. mangium,Eucalyptus citriodoraandE. urophylla×E. grandisand their stem sap lfux densities in wet and dry season monitored by using Granier’s thermal dissipation probe method, were investigated in subtropical south China. The results showed that vessels were of single-type in these tree species except forM. macclureithat had two types of vessels. The vessel length, density and lumen diameter were signiifcantly different among the eight tree species, and obvious relationships among the three vessel characters were observed. The normalized area of sap wood had signiifcant relation with the vessel characters. No signiifcant relation of the maximum sap lfow with vessel characters was found, but it existed between the maximum whole tree transpiration rate and the vessel characters in wet season, and so did that of the daily total transpired amount with the vessel characters. Therefore, the vessel in trunk had no inlfuence on sap lfow rate, the negative trade-off relation between vessel diameter and sapwood area of trunk could the difference in water transpiration rate of trunk caused by the difference of vessel diameter of the tree species.关键词
导管特征/树干液流/Granier’s热扩散探针法/蒸腾速率/日蒸腾量Key words
Vessel characteristics/Sap flow/Granier’s thermal dissipation probe method/Transpiration rate/Daily transpiration引用本文复制引用
赵培强,赵平,牛俊峰,朱丽薇,倪广艳,高建国,张振振..华南地区常见树种导管特征与树干液流的关系[J].热带亚热带植物学报,2014,(6):537-548,12.基金项目
国家自然科学基金项目(41030638,41275169,31170673)；广东省自然科学基金项目(S2012020010933)资助 （41030638,41275169,31170673）
