| 生物土壤与生态 |
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| Sap Flow Characteristics of Growing Poplar Seedlings in Horqin Sand Land |
| YUE Guang-yang1,2, ZHAO Ha-lin1, ZHANG Tong-hui1, NIU Li1,2 |
| 1.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2.Graduate School of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract Based on the Dynamax Sap Flow Measuring System, Li-6400 Portable Photosynthesis System and Automatic Weather Station System, the sap flow, leaf transpiration of poplar seedlings in Horqin Sand Land and its relation with environmental factors were studied. The results showed that the diurnal variation of sap flow density of the poplar seedlings presented multi-peaks curve or broad-peak curve depending on the weather conditions. The sap flow started at 04:30 and stopped at 21:00. There are close relation between sap flow density of poplar seedlings and the ambient environmental factors, and the variation of sap flow is the result of comprehensive effect of multiple meteorological factors. The diurnal variation of stem sap flow of poplar seedling is controlled mainly by photosynthetic active radiation (Q) and vapor pressure deficit (D). Poplar seedlings, with high water consumption but low water use efficiency, are more suitable to grow in sufficient soil moisture conditions.
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Received: 10 March 2008
Published: 20 July 2009
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[1]张国盛.干旱、半干旱地区乔灌木树种耐旱性及林地水分动态研究进展[J].中国沙漠,2000,20(4):363-368.
[2]周晓阳,张辉.不同耐旱性杨树气孔保卫细胞对水分胁迫的差异性反应[J].北京林业大学学报,1999,21(5):1-6.
[3]周海燕.降水对青杨蒸腾速率及其内部调节机制的影响[J].干旱区资源与环境,1998,12(2):62-66.
[4]Bassman J G,Zwier J C.Gas exchange characteristics of Populus trichocarpa,Populus deltoids and Populus trichocarpa deltoids clones[J].Tree Physiology,1991,8:145-159.
[5]杨建伟,梁宗锁,韩蕊莲,等.不同干旱土壤条件下杨树的耗水规律及水分利用效率研究[J].植物生态学报,2004,28(5):630-636.
[6]张小由,龚家栋,周茅先,等.胡杨树干液流的时空变异性研究[J].中国沙漠,2004,24(4):489-492.
[7]司建华,冯起,张小由.热脉冲技术在确定胡杨幼树干液流中的应用[J].冰川冻土,2004,26(4):503-508.
[8]岳广阳,张铜会,赵哈林,等.科尔沁沙地黄柳和小叶锦鸡儿茎流及蒸腾特征[J].生态学报,2006,26(10):3205-3213.
[9]Campbell G S,Norman J M.An introduction to environmental biophysics (second edition)[M].New York,Berlin,Heidelberg:Springer-Verlag Press,1998:36-51.
[10]李雪华,蒋德明,阿拉木萨,等.科尔沁沙地4种植物抗旱性的比较研究[J].应用生态学报,2002,13(11):1385-1388.
[11]Clark J,Gibbs R D.Studies in tree physiology.IV.Further investigations of seasonal changes in moisture content of certain Canada forest trees[J].Canadian Journal of Botany,1957,35:219-253.
[12]龚吉蕊,赵爱芬,苏培玺,等.黑河流域几个主要植物种光合特征的比较研究[J].中国沙漠,2005,25(4):587-592.
[13]张小由,康尔泗,张智慧,等.沙枣树干液流的动态研究[J].中国沙漠,2006,26(1):146-151.
[14]Gyenge J E,Fernandez M E,Schlichter T M.Water relations of ponderosa pines in Patagonia Argentina:implications for local water resources and individual growth[J].Tree,2003,17:417-423.
[15]赵哈林,赵学勇,张铜会,等.沙漠化过程中植物的适应对策及植被稳定性机理[M].北京:海洋出版社,2004:141-146. |
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2009, Vol. 29 
