南京林业大学学报（自然科学版）2024，Vol.48Issue(2)：191-198,8.DOI:10.12302/j.issn.1000-2006.202203015
福建省福建柏人工林立地指数表的编制与应用
Evaluation of site quality of Fokienia hodginsii plantation based on site index method
摘要
Abstract
[Objective]The site index method was used to evaluate the site quality of Fokienia hodginsii plantations with different forest ages,so as to provide investigation in Fujian Province,China.[Method]Taking F.hodginsii plantations of different forest ages in Fujian Province as the research object,six commonly used theoretical growth equations were selected to calculate the average age of F.hodginsii and dominant trees.The fitting performance of each equation was evaluated according to the coefficient of determination(R2),the absolute error(MAE)and the root mean square error(RMSE),compiled the site index table applicable to Fujian cypress plantation in Fujian Province,aiming to provide a scientific basis for the quality investigation of forest stand in Fujian Province.[Result]The results show that the R2 of the Korf equation was the largest,and the RMSE and the MAE were the lowest,so the Korf equation was selected as the optimal steering curve equation.By plotting the data of 104 dominant tree height,the average growth rate of dominant height and the change of annual growth rate were plotted,and the base age of F.hodginsii plantation was determined to be 20 years according to the variation coefficient of dominant height of each age class,which was determined according to the variation range of dominant height at the base age.The index level distance was 2 m,and the site index table compiled by the proportional adjustment method showed that the site index of most of Fujian cypress plantations in Fujian Province was at a medium level,and only 7％of the standard sites showed a higher level of site index.Taking two indicators of slope aspect and soil thickness as the dominant factors for the classification of site types,it was found that most of the F.hodginsii plantations in Fujian Province had shallow soil depth,and the number of plantations on sunny slopes was higher than that on shady slopes.[Conclusion]The results of this study can be used to construct a tree height growth model for F.hodginsii plantation stands in the region,and to predict the growth and harvest of F.hodginsii stands.Evaluation of stand quality was carried out using the compiled site index table to better quantify the productivity of different sites,which can be applied in practice after chi-square test and drop point test.关键词
福建柏/立地指数法/立地品质/拟合方程Key words
Fokienia hodginsii/site index method/site quality/fitting equation分类
农业科技引用本文复制引用
李秉钧,刘聘,韩永振,荣俊冬,陈礼光,郑郁善..福建省福建柏人工林立地指数表的编制与应用[J].南京林业大学学报（自然科学版）,2024,48(2):191-198,8.基金项目
福建省种苗科技攻关六期项目 （）
福建省科技厅重大专项(2018NZ0001-1) （2018NZ0001-1）
福建农林大学科技发展创新基金项目(KF2015085). （KF2015085）
