Capacity of Stem Water Conductivity for Two Eucalyptus (Eucalyptus urophylla) Plantations in South China

编号 zgly0000327893

文献类型 期刊论文

文献题名 Capacity of Stem Water Conductivity for Two Eucalyptus (Eucalyptus urophylla) Plantations in South China

学科分类 220.99;林学其他学科

作者 YinGuangcai  ZhouGuoyi  JimMorris  WangXu  HuangZhihong  ChuGuowei 

作者单位 SouthChinaInstituteofBotany 

母体文献 中国林学: 英文版 

年卷期 2004,6(1)

页码 27-32

年份 2004 

分类号 S792.390.1 

关键词 桉树  种植园  中国  南方地区  茎  组织液电导率 

文摘内容 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=AX^3+BX^2+CX+D(R^2=0.7021, n=135,p=0.01) at both sites (Hetou and Jijia) in the Leizhou Peninsula, Guangdong Province, China, where Ywas 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 51.55-55.65mL·cm^-2·h^-1 under the selected extremely high environmental conditions。