城市绿地园林树种叶面积指数测定方法研究——以小叶榕为例  

Methods for Measuring Leaf Area Index of Landscape Trees in Urban Greenland——A Case Study of Ficus microcarpa

作　　者：柯峰[1,2] 翁殊斐[2] 苏志尧[2] 

机构地区：[1]广州民航职业技术学院,广东广州510403 [2]华南农业大学林学院,广东广州510642

出　　处：《福建林业科技》2011年第3期88-91,95,共5页Journal of Fujian Forestry Science and Technology

基　　金：华南农业大学校长基金(2008K019)

摘　　要：分别采用半球面影像技术和LAI-2000冠层分析仪对华南地区最常用园林树种小叶榕(Ficus microcarpa)的叶面积指数(Leaf Area Index,LAI)进行测定、比较和分析。研究表明,2种测量仪器所测LAI值存在极显著正相关(P<0.001);用半球面影像技术测量的LAI值与冠幅、胸径和树高之间也存在极显著一元线性关系,构建回归模型分别为:LAI=0.0444Cw+1.6526,LAI=0.0088D+1.8327,LAI=0.0543H+1.6404;通过模型可估测小叶榕单株的叶面积指数,达到95%的置信区间的估测值范围。Leaf area index（LAI） was measured,compared,analyzed for the LAI of Ficus microcarpa,the most common landscape trees in southern China with hemispherical photography and LAI-2000 canopy analyzer.The results showed that both LAI was significantly positive correlation（P0.001）.The LAI measured with hemispherical photographs and crown width,DBH and tree height exist the significant correlation.Regression model constructed were respectively：LAI=0.0444Cw＋1.6526,LAI=0.0088D＋1.8327,LAI=0.0543H＋1.6404,the LAI of Ficus microcarpa could be estimated by the model,which reached 95% of confidence interval estimation range.

关 键 词：小叶榕 叶面积指数LAI 回归模型 半球面影像技术 冠层分析仪 

分 类 号：S718.43[农业科学—林学]