摘要
以河南省9市丘陵低山区刺槐人工林为研究对象,编制该省刺槐人工林立地指数表,共设置219块样地进行样地调查,获得509对优势木树高-林龄数据,并对每个样地抽取1株平均优势木进行树干解析;应用3倍标准差法剔除异常数据,选用Logarithmic curve、Quadratic、Richard等5个常用方程拟合509对优势木树高-林龄数据,通过相关指数和残差平方和指标筛选导向曲线;应用标准差调整法编制立地指数表,并对其进行拟合显著性检验-X 2检验和预报精度检验-标准差检验。结果表明:Richard方程效果最优,其相关指数较大,残差平方和较小,同时线形符合树高生长规律,确定为导向曲线;以基准年龄12 a,指数级距为2 m,划分10个立地指数级,并据此编制了立地指数表;经检验证明所编表合格,可用于评价河南省丘陵低山区刺槐人工林的立地质量。
Taking Robinia pseudoacacia plantations in the hilly and low mountainous areas of 9 cities in Henan Province as the research object,the site index table for R.pseudoacacia plantations was compiled.A total of 219 plots were set up for sample plot investigation,and 509 pairs of dominant trees were obtained.The average dominant tree was selected for tree analysis.Three times the standard deviation method was used to eliminate abnormal data and select Five common equations such as Logarithmic curve,Quadratic and Richard were used to fit 509 pairs of dominant tree height-stand age data,and guide curves were screened by correlation index and residual sum of squares.The significance of fit test-X 2 test and the prediction accuracy test-standard deviation test were performed.The model fitting result is the best effect of Richard’s equation,the correlation index is larger,the residual square sum is smaller,and the linear shape conforms to the high growth law of the tree,and the orientation curve is determined;the benchmark age is 12 a,the exponential distance is 2 m,and 10 vertical index levels are divided,and the vertical index table is compiled accordingly After inspection,the list is qualified and can be used to evaluate the standing quality of the R.pseudoacacia plantation in the hilly and low mountainous areas of Henan Province.
作者
陈涛
梅继林
王露露
王思崇
焦春雨
朱学灵
CHEN Tao;MEI Jilin;WANG Lulu;WANG Sichong;JIAO Chunyu;ZHU Xueling(Department of Landscape Architecture,Henan Forestry Vocational College,Luoyang Henan 471002,P.R.China;Huangchuan County Forestry Workstation,Huangchuan Henan 465150,P.R.China;Henan Yuanzhi Forestry Planning and Design Limited Company,Zhengzhou Henan 450000,P.R.China)
出处
《西部林业科学》
CAS
北大核心
2023年第3期33-40,共8页
Journal of West China Forestry Science
基金
国家科技攻关计划项目(85-018-02-13)
河南省科技攻关计划项目(172102110239)
河南省林木种质资源专项普查(豫林种发[2016]20号)。
关键词
河南省
丘陵低山区
刺槐
立地指数表
导向曲线
Henan Province
hills and low mountains
Robinia pseudoacacia
site index table
guide curve
