Capacity of stem water conductivity for two Eucaylyptus (Eucalyptus urophylla) plantations in South China |
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出 版 社：Forestry Stuidies in China |
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发表时间：2004 |
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台 站：鼎湖山森林生态系统定位研究站 |
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作 者：Yin Guangcai，Zhou Guoyi，Jim Morris，Wang Xu，Huang Zhihong，Chu Guowei
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点 击 率：560725 |
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关 键 字(英文)：south China, sap flux density (SFD), eucalyptus plantation, water conductivity |
| 摘 要(英文)：The sap flux density (SFD) was used as a measure of water capacity through stems of eucalyptus in this paper. It
was found that daily SFD increased with daily vapor pressure deficit (VPD) in nonlinear regression Y = AX3 + BX2 + CX + D (R2 =
0.702 1, n = 135, p = 0.01) at both sites (Hetou and Jijia) in the Leizhou Peninsula, Guangdong Province, China, where Y was daily
SFD, X was mean daily VPD, A, B, C, D were constants. But extremely high VPD might limit stem water conductivity. The
environmental factors, such as air vapor pressure deficit (VPD), solar radiation (RAD), etc., were the main determinants of SFD for
E. urophylla plantations. The upper threshold of diurnal SFD was 51.55–55.65 mL·cm–2·h–1 under the selected extremely high
environmental conditions. |
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 CapacityofStemWaterConductivityforTwoEucalyptusEucalyptusurophyllaPlantationsinSouthChina.PDF |
