四川桤木天然林和人工林的单木生长模型研究  

A Study of Individual-tree Growth Models in Natural and Artificial Forests of Alnus cremastogyne

作　　者：伍小敏 徐春 杨汉波[2] 陈炙[2] 郭洪英[2] 黄振[2] 王泽亮[2] WU Xiao-min;XU Chun;YANG Han-bo;CHEN Zhi;GUO Hong-ying;HUANG Zhen;WANG Ze-liang(Agricultare Forestry Bureau of Dongxing District,Neijiang 641100,China;Sichuan Academy of Forestry,Chengdu 610081,China)

机构地区：[1]内江市东兴区农林局,四川内江641100 [2]四川省林业科学研究院,四川成都610081

出　　处：《四川林业科技》2018年第4期8-11,44,共5页Journal of Sichuan Forestry Science and Technology

基　　金：四川省科技支撑计划"突破性林木育种材料与方法创新"(2016NYZ0035);桤木优良种源(家系)早期选择研究(2018CZZX14)

摘　　要：预测和研究四川桤木天然林和人工林的生长与发展规律,以更好地经营四川桤木天然林。以四川桤木天然林和人工林为研究对象,基于实测的树高-胸径数据,通过比较分析9个树高曲线模型,建立四川桤木的单木树高曲线模型。结果显示,最终确定的四川桤木最优树高曲线模型的决定系数R^2为0.794,调整决定系数为0.792,均方根误差RMSE为0.886,相对均方根误差E_(RMSE)为0.045,平均误差ME为0.000,平均绝对误差MAE为2.641。最优的四川桤木单木树高曲线模型自变量为胸径,单木生长模型为H=1.3+27.176×(D/(1+D))^(11.856)。建立的单木树高曲线模型有较好的生物学意义,可为四川省四川桤木天然林和人工林的生长预测提供依据。The rules of growth and development was calculated for natural and artificial forests of Alnus cremastogyne ,which would lead to better management of forests. Based on the measured data of height and DBH,individual tree height-diameter models were developed for A.cremastogyne by analyzing the existing nine height-diameter models.The results showed that the values of R^2, R^2 adj ,RMSE,ERMSE,ME,and MAE of the optimal height-diameter model were 0.79403,0.79217,0.886,0.045,0.00021,and 2.64125,respectively.The optimal growth model argument for individual trees of A.cremastogyne was DBH,the growth model was H=1.3＋27.176×（D/（1＋D ））^11.856 .The height-diameter model was biologically reliable for predicting the growth of A.cremastogyne in Sichuan province.

关 键 词：四川桤木 树高 胸径 生长模型 

分 类 号：S711[农业科学—林学]