| 沙漠人工植被区柠条树干液流变化及影响因子分析 |
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| 引用本文： | 黄磊,张志山,周小琨.沙漠人工植被区柠条树干液流变化及影响因子分析[J].中国沙漠,2011,31(2):415-419. |
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| 作者姓名： | 黄磊 张志山 周小琨 |
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| 作者单位： | 1.中国科学院 寒区旱区环境与工程研究所 沙坡头沙漠试验研究站, 甘肃 兰州 730000; 2.东北大学数学系, 辽宁 沈阳 110004 |
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| 基金项目： | 国家自然科学基金项目(30870425;40971033)资助 |
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| 摘 要： | 于2008年5—9月利用Dynamax茎流仪测量了沙坡头地区18 a龄人工柠条的树干液流速率,并利用涡动相关系统同步监测了环境因子,分析柠条液流的变化规律及其与环境因子的关系。结果表明,观测期间柠条液流速率均表现为明显的单峰曲线,液流一般在00:00左右启动,08:30—11:30达到高峰,然后下降,在午夜时分达到最低。对液流速率与环境因子的相关分析表明,太阳辐射、相对湿度、空气温度、风速等因子显著影响到柠条的液流速率,其中太阳辐射和相对湿度的影响最为显著, 经过逐步回归建立了该区柠条液流速率与环境因子的多元线性方程。
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| 关 键 词： | 树干液流 柠条 影响因子 沙漠人工植被区 |
| 收稿时间： | 2010-7-26 |
| 修稿时间： | 2010-9-14 |
Stem Sap Flow of Caragana korshinskii and Its Influence Factors in a Revegetated Desert Area |
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| HUANG Lei,ZHANG Zhi-shan,ZHOU Xiao-kun.Stem Sap Flow of Caragana korshinskii and Its Influence Factors in a Revegetated Desert Area[J].Journal of Desert Research,2011,31(2):415-419. |
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| Authors: | HUANG Lei ZHANG Zhi-shan ZHOU Xiao-kun |
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| Institution: | 1.Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2.Department of Mathematics, Northeastern University, Shenyang 110004, China |
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| Abstract: | Stem sap flows of 18-year-old Caragana korshinskii plants were monitored continuously with Dynamax stem flow recorder for the entire growing season under nature conditions in a revegetated desert area.Environmental factors such as solar radiation,air temperatures,relative humidity,wind speed,and precipitation were measured meanwhile with eddy correlation system.Results show that the curves of stem sap flow rate in the whole growing season are obviously single-peak.Sap flow usually starts at 00:00 and increa... |
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| Keywords: | sap flow Caragana korshinskii environmental factors revegetated desert area |
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