| 毛乌素沙地新疆杨蒸腾变化规律及其影响因素 |
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| 引用本文： | 桑玉强,郭芳,张劲松,孟平,高峻.毛乌素沙地新疆杨蒸腾变化规律及其影响因素[J].林业科学,2009,45(9). |
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| 作者姓名： | 桑玉强 郭芳 张劲松 孟平 高峻 |
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| 作者单位： | 1. 河南农业大学,郑州,450002
2. 中国林业科学研究院林业研究所,北京,100091 |
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| 基金项目： | 国家"863"节水专项课题 |
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| 摘 要： | 利用热扩散(TDP)技术于2004年4-9月测算毛乌素沙地21年生新疆杨蒸腾速率,分析新疆杨蒸腾变化规律及其与气象因子、土壤水分、水面蒸发以及叶面积指数的关系.结果表明:1)在主要生长季节(4-9月),新疆杨单株蒸腾总量为5 300.96 L,月最大蒸腾量出现在6月,为1 073.82 L,占4-9月总量的20.26%;2)新疆杨蒸腾速率与太阳辐射、空气温度、相对湿度、风速等各气象要素有很好的复相关性,其中,影响新疆杨蒸腾的最主要气象因子为太阳辐射,蒸腾与太阳辐射之间存在时滞性;3)受地下水位影响,土壤水分与新疆杨日蒸腾量相关性不大,不是毛乌素沙地新疆杨蒸腾的限制因子;4)新疆杨日蒸腾量与叶面积指数×水面蒸发的关系用乘幂函数拟合效果较好,相关系数为0.83,利用建立的乘幂方程可以推算新疆杨日耗水量.
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| 关 键 词： | 毛乌素沙地 新疆杨 蒸腾速率 热扩散 气象要素 土壤水分 |
Variation in Transpiration of Populus bolleana and the Influence Factors in Maowusu Sandy Area |
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| Sang Yuqiang,Guo Fang,Zhang Jinsong,Meng Ping,Gao Jun.Variation in Transpiration of Populus bolleana and the Influence Factors in Maowusu Sandy Area[J].Scientia Silvae Sinicae,2009,45(9). |
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| Authors: | Sang Yuqiang Guo Fang Zhang Jinsong Meng Ping Gao Jun |
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| Institution: | 1.Henan Agricultural University Zhengzhou 450002;2.Research Institute of Forestry;CAF Beijing 100091 |
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| Abstract: | Transpiration of 21-year-old Populus bolleana was measured by thermal dissipation sap flow velocity probe(TDP) and the meteorological data were automatically collected in a meteorological station in Maowusu sandy area from April to September in 2004. Relationships between transpiration variation and meteorological factors,soil water,water surface evaporation(EV_0) or leaf area index(LAI) were analyzed. The aim of the study was to provide essential scientific basis for the water management of shelter belts i... |
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| Keywords: | Maowusu sandy area Populus bolleana transpiration rate TDP meteorological factors soil water |
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