| 马占相思树干液流的研究 |
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| 引用本文： | 肖以华,陈步峰,陈嘉杰,陈勇,李东文,吴统贵.马占相思树干液流的研究[J].林业科学研究,2005,18(3):331-335. |
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| 作者姓名： | 肖以华 陈步峰 陈嘉杰 陈勇 李东文 吴统贵 |
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| 作者单位： | 1. 中国林业科学研究院热带林业研究所,广东,广州,510520
2. 广东省中山市林场,广东,中山,528403 |
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| 基金项目： | 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) |
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| 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。
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| 关 键 词： | 马占相思 热扩散法 树干液流 |
| 文章编号： | 1001-1498(2005)03-0331-05 |
| 收稿时间： | 2004/12/21 0:00:00 |
A Study on the Stem Sap Flow of Acacia mangium |
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| XIAO Yi-hu,CHEN Bu-feng,CHEN Jia-jie,CHEN Yong,LI Dong-wen and WU Tong-gui.A Study on the Stem Sap Flow of Acacia mangium[J].Forest Research,2005,18(3):331-335. |
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| Authors: | XIAO Yi-hu CHEN Bu-feng CHEN Jia-jie CHEN Yong LI Dong-wen and WU Tong-gui |
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| Institution: | Research Institute of Tropical Forestry, CAF, Guangzhou510520, Guangdong, China;Research Institute of Tropical Forestry, CAF, Guangzhou510520, Guangdong, China;Forestry Farm of Zhongshan, Zhongshan528403, Guangdong, China;Research Institute of Tropical Forestry, CAF, Guangzhou510520, Guangdong, China;Forestry Farm of Zhongshan, Zhongshan528403, Guangdong, China;Research Institute of Tropical Forestry, CAF, Guangzhou510520, Guangdong, China |
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| Abstract: | 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 10.988×103 g and 5.082×103 g respectively and the yearly total was 2 238.265×103 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 85.203×103 g·m-2 and 57.463×103 g·m-2 respectively. The entire process of daily sap flow presented a S-shape curve. |
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| Keywords: | Acacia mangium thermal dissipation method stem-sap flow |
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