| Conversion of water consumption of a single tree and a forest stand of Populus euphratica |
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| 作者姓名： | KANG Er-si |
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| 作者单位： | ZHANG Xiao-you（Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, P. R. China） ;
MENG Tong-tong（Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, P. R. China） ;
KANG Er-si（Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, P. R. China） ; |
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| 基金项目： | the Knowledge Innovation Engineering Project of the Chinese Academy of Sciences，国家重点基础研究发展计划(973计划) |
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| 摘 要： | Our study dealt with the determination of sapwood sap flow of a single Populus euphratica tree by heat pulse technique and the calculation of water consumption of an entire forest stand, given the correlation between sap flow and sapwood area of P. euphratica. The relation between diameter at breast height （DBH） and sapwood area constitutes a powerful model; these variables are highly correlated. By means of an analysis of DBH in the sample plot, the distribution of the sapwood area of the forest land was obtained and the water consumption of this P. euphratica forest, in the lower reaches of the Heihe River, calculated as 214.9 mm by standard specific conductivity of the sample tree.
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| 关 键 词： | 水分消耗 杨树 树液流动 植物学 |
| 收稿时间： | 2007-11-6 |
Conversion of water consumption of a single tree and a forest stand of Populus euphratica |
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| KANG Er-si.Conversion of water consumption of a single tree and a forest stand of Populus euphratica[J].Forestry Studies in China,2008,10(2):81-87. |
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| Authors: | Xiao-you Zhang Tong-tong Meng Er-si Kang |
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| Institution: | Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, P. R. China |
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| Abstract: | Our study dear with the determination of sapwood sap flow of a single Populus euphratica tree by heat pulse technique and the calculation of water consumption of an entire forest stand, given the correlation between sap flow and sapwood area of P. euphratica. The relation between diameter at breast height (DBH) and sapwood area constitutes a powerful model; these variables are highly correlated. By means of an analysis of DBH in the sample plot, the distribution of the sapwood area of the forest land was obtained and the water consumption of this P. euphratica forest, in the lower reaches of the Heihe River, calculated as 214.9 mm by standard specific conductivity of the sample tree. |
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| Keywords: | Populus euphratica sap flow water consumption |
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