| Sap flow response of Eucaylyptus (Eucalyptus urophylla) to environmental stress in South China |
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| 引用本文： | 尹光彩,周国逸,MORRIS Jim,黄志宏,褚国伟,周光益. Sap flow response of Eucaylyptus (Eucalyptus urophylla) to environmental stress in South China[J]. Journal of Zhejiang University. Science. B, 2004, 0(10) |
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| 作者姓名： | 尹光彩 周国逸 MORRIS Jim 黄志宏 褚国伟 周光益 |
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| 作者单位： | South China Botanic Garden，CAS，Guangzhou 510650，China Faculty of Environmental Sciences and Engineering，GDUT，Guangzhou 510090，China，South China Botanic Garden，CAS，Guangzhou 510650，China，Centre for Forest Tree Technology，Victoria 3084，Australia，South China Botanic Garden，CAS，Guangzhou 510650，China，South China Botanic Garden，CAS，Guangzhou 510650，China，Research Institute of Tropical Forestry，CAF，Guangzhou 510520，China |
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| 基金项目： | Project supported by Knowledge Innovation Funds from Chinese Academy of Sciences (Nos. KSCX2-SW-120, KZCX1-SW-01-01A3)，the Key Project of Guangdong Natural Science Foundation (No. 010567), China Author for correspondence |
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| 摘 要： | Sap flow and environmental conditions were monitored at two Eucalyptus (Eucalyptus urophylla S.T.Blake) plantations at Hetou and Jijia, located in Leizhou, Zhanjiang, Guangdong Province. It was found that daily sap flux density (SFD) of Eucalyptus was closely related to daily atmospheric vapor pressure deficit (VPD) (R2=0.76, P=0.01 at Hetou and R2=0.7021, P=0.01 at Jijia) at both sites. No significant relationship existed between daily SFD and mean daily air temperature at both sites. Daily SFD varied with wind speed Y=-17585X3 15147X2-1250.7X 2278.4 (R2=0.68; P=0.01) at Hetou and Y=-101.67X3-1.65X2-376.4X 1914.8 (R2=0.40,P=0.05) at Jijia, where Y was daily SFD,X was daily wind speed. Experimental observations yielded the following data: (1) the critical lower and upper daily VPD threshold were 0 and 2 kPa, within which daily SFD varied from 540±70 L/(m2·d) to 4739±115 L/(m2·d) at Hetou site, from 397±26 L/(m2·d) to 3414±191 L/(m2·d) at Jijia site; (2) Diurnal SFDs at Hetou site were much highe
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Sap flow response of Eucaylyptus (Eucalyptus urophylla) to environmental stress in South China |
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| YIN Guang-cai,ZHOU Guo-yi,MORRIS Jim,HUANG Zhi-hong,CHU Guo-wei,ZHOU Guang-yi. Sap flow response of Eucaylyptus (Eucalyptus urophylla) to environmental stress in South China[J]. Journal of Zhejiang University. Science. B, 2004, 0(10) |
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| Authors: | YIN Guang-cai ZHOU Guo-yi MORRIS Jim HUANG Zhi-hong CHU Guo-wei ZHOU Guang-yi |
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| Abstract: | |
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| Keywords: | Sap flow Environmental stress Eucalyptus plantations Water conductivity |
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