Models for Estimation of Single Leaf Area of Mangrove TreesModels Trees based on Leaf Length and Widthbased Width

编号 zgly0001606334

文献类型 期刊论文

文献题名 Models for Estimation of Single Leaf Area of Mangrove TreesModels Trees based on Leaf Length and Widthbased Width

作者 LETongchao  ZHANGHuiru  TANFanglin  YOUHuiming  HUANGLi 

作者单位 ResearchInstituteofForestResourceInformationTechniques  ChineseAcademyofForestry  FujianAcademyofForestry 

母体文献 湿地科学 

年卷期 2014年02期

年份 2014 

分类号 Q944.56 

关键词 mangrove  leafarea  non-destructivemeasurement  regressionanalysis 

文摘内容 Leaf area is an important parameter for modeling plant growth and physiological processes.It is very expensive and difficult for measuring leaf area by means of Leaf Area Meter,therefore,it’s quite necessary to obtain one simple model for estimation of leaf area of mangrove tree.The models for estimation of leaf area of 3 species of mangrove trees were developed based on leaf length and width.Totally,leaf area(LA),leaf length(L)and width(W)were measured from 450 fresh leaves of major three species of mangrove trees in Zhangjiang Estuary Mangrove National Natural Reserve,Fujian province.The actual leaf area of the plant was measured with the help of ArcGIS software and regression model was fitted.The majority of the data(80%)were used for model calibration,and the remaining data(20%)were used for model validation.All the leaf areas of 3 species of mangrove trees had been significant correlation between L,W,L·W,L2,W2and(L+W)2,so the factors could be constructed into a regression model with leaf area.Six models for estimation of leaf area selected were significantly(p<0.001)regressed with L,W and the functions of these dimensions.All models were linear relationships.Based on goodness of fit,prediction ability and residual performance,it was found that model 3 could best describe the relationship between leaf area and leaf length and width.By means of regression analysis,the following models were developed:LA=0.28+0.66L·W(R2=0.980)for Kandelia candel,LA=0.09+0.73L·W(R2=0.983)for Avicennia marina,LA=0.52+0.72L·W(R2=0.990)for Aegiceras corniculatum,respectively.The study provided a simple,reliable and non-destructive method for estimating single leaf area.It had a good potential in the functional structural model of mangrove tree.