| 荒漠人工植被区柠条和油蒿茎干液流动态研究 |
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| 引用本文： | 黄磊,张志山.荒漠人工植被区柠条和油蒿茎干液流动态研究[J].中国沙漠,2011,30(3):683-688. |
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| 作者姓名： | 黄磊 张志山 |
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| 作者单位： | 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 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(KZCX2-EW-301-3); 国家自然科学基金项目(40971033;30870425)资助 |
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| 摘 要： | 于2008年5—10月利用Dynamax茎流仪观测了沙坡头人工植被区18龄柠条和8龄油蒿的茎干液流速率,并利用涡动相关系统同步监测了环境因子,分析了柠条和油蒿液流动态变化及其与环境因子和作物参考蒸散量(ET0)的关系。结果表明,观测期间柠条和油蒿液流速率均表现为明显的单峰曲线;柠条液流一般在06:00左右启动,12:00左右达到高峰,然后下降,夜间存在液流现象;油蒿液流一般在08:00左右启动,14:00—16:00达到高峰,在夜间没有观测到液流的发生;柠条和油蒿的液流速率和ET0存在显著的线性关系;环境因子对柠条液流量影响的大小顺序为太阳辐射>相对湿度>空气温度>饱和水汽压差>风速;而对油蒿液流量影响的环境因子大小顺序为太阳辐射>饱和水汽压差>相对湿度>空气温度>风速。
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| 关 键 词： | 茎干液流 柠条 油蒿 荒漠人工植被区 |
| 收稿时间： | 2010-9-28 |
| 修稿时间： | 2010-12-19 |
Stem Sap Flow of Caragana korshinskii and Artemisia ordosica in a Revegetated Desert Area |
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| HUANG Lei
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ZHANG Zhi-shan.Stem Sap Flow of Caragana korshinskii and Artemisia ordosica in a Revegetated Desert Area[J].Journal of Desert Research,2011,30(3):683-688. |
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| Authors: | HUANG Lei ZHANG Zhi-shan |
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| Institution: | HUANG Lei,ZHANG Zhi-shan(Shapotou Desert Research and Experiment Station,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China) |
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| Abstract: | Stem sap flows of 18-year-old Caragana korshinskii and 8-year-old Artemisia ordosica plants were monitored continuously with Dynamax stem flow recorder for a growing season in 2008 under nature conditions in a revegetated desert area.Environmental factors such as solar radiation,air temperature,relative humidity,wind speed,and precipitation were measured meanwhile with eddy correlation system.Diurnal and seasonal variations of sap flow rates and their correlation with meteorological factors and reference ev... |
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| Keywords: | stem sap flow Caragana korshinskii Artemisia ordosica revegetated desert area |
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