文献类型：期刊文献

中文题名：马占相思树干液流的研究

英文题名：A Study on the Stem Sap Flow of Acacia mangium

作者：肖以华[1] 陈步峰[1] 陈嘉杰[2] 陈勇[1] 李东文[2] 吴统贵[1]

第一作者：肖以华

机构：[1]中国林业科学研究院热带林业研究所;[2]广东省中山市林场

年份：2005

卷号：18

期号：3

起止页码：331-335

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金重大项目"热带天然林优势种群及人工林水分蒸腾量的研究"(30170743)

语种：中文

中文关键词：马占相思;热扩散法;树干液流

外文关键词：Acacia mangium; thermal dissipation method; stem-sap flow

分类号：S715.4

摘要：采用ICT-2000TE树干液流测定系统,对华南地区的主要造林树种马占相思的液流变化进行了为期1a的观测,并对树干液流变化特征、液流量日变化、各位点液流及全年液流量的变化进行了深入研究。结果表明:马占相思的树干液流量日进程呈单峰型曲线,雨、旱季的全天总液流量分别为10.988×103、5.082×103g,全年总液流量为2238.265×103g;马占相思木质部不同部位输水能力差异较大,液流速率最大的位点位于木质部15mm处;马占相思单位边材面积日累计液流量在雨、旱季分别为85.203×103、57.463×103g·m-2左右,整个过程呈"S"形。
ICT-2000TE system was used to investigate the stem sap flow of Acacia mangium, an important species for afforestation in south China, in 2003. The characteristics of stem sap flow change, the daily change of sap flow amount, the sap flow in different points and yearly fluctuation were analyzed. The results showed that the daily sap flow amount followed a monopeak curve. The amounts of daily total sap flow in rainy season and dry season were 10.988×10~3 g and 5.082×10~3 g respectively and the yearly total was 2 238.265×10~3 g. There esisted significant differences among different positions of A. mangium in water transferring capacity. The position with the fastest sap flow located at the xylem of 15 mm. The daily accumulated sap flow amounts of sapwood in rainy season and dry season were 85.203×10~3 g·m^(-2) and 57.463×10~3 g·m^(-2) respectively. The entire process of daily sap flow presented a S-shape curve.