文献类型：期刊文献

中文题名：典型中亚热带天然阔叶林各林层树高胸径关系研究

英文题名：Study on Height-diameter Relationship in Each Stratum of Typical Natural Broadleaved Forests in Mid-subtropics

作者：庄崇洋[1] 黄清麟[1] 马志波[1,2] 郑群瑞[3] 王宏[1]

第一作者：庄崇洋

机构：[1]中国林业科学研究院资源信息研究所国家林业局林业遥感与信息技术重点实验室;[2]中国林业科学研究院森林生态环境与保护研究所;[3]建瓯万木林省级自然保护区管理处

年份：2017

卷号：30

期号：3

起止页码：479-485

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2017_2018】；

基金：国家自然科学基金资助项目中亚热带天然阔叶林林层特征研究(31370633)

语种：中文

中文关键词：中亚热带;典型天然阔叶林;分层;树高胸径曲线

外文关键词：mid-subtropics; typical natural broadleaved forest; stratification; height-diameter curve

分类号：S718.54

摘要：[目的]在划分林层的基础上,探讨天然阔叶林树高胸径关系,从林层角度研究树高曲线以揭示复层林林分特征。[方法]根据典型中亚热带天然阔叶林各林层数据情况选择Schumacher式(简称S式),Curtis式(简称C式)对典型林分各林层树高胸径关系进行拟合。[结果]S式和C式在拟合全林分和第Ⅲ亚层的效果较好,全林分树高模型的R^2均在0.86以上,第Ⅲ亚层的R^2均在0.58以上,且RMSE和AMR均较小,但无论是S式还是C式都不能很好的拟合第Ⅰ、Ⅱ亚层,其拟合R^2的结果较低,大都在0.2~0.3左右。选取模型拟合结果 R^2较大,RMSE、AMR较小的C式拟合各林层树高胸径模型,结果表明采用全林分模型推算各亚层(不包括全林分)的树高会产生较大的AMR;虽然分层拟合各亚层树高胸径时获得的模型的R^2较小,但其估计相应层内树高产生的ARM值却小于全林分模型,表明采用亚层树高胸径模型估计相应层内林木树高时具有较小的误差。[结论]在典型中亚热带天然阔叶林中,无论是全林树高模型还是分林层树高模型,C式的适应性均比S式高。选择C式全林分树高模型估计各亚层树高产生的误差比各亚层采用各自的C式树高模型拟合的误差大。
[Objective ] To investigate the height-diameter relationship in strata （ including the whole stand and every stratum） of typical natural broad-leaved forests in mid-subtropics. [ Method] The Schumacher （S） model and Cur- tis （C） model were chosen to fit the height-diameter relationship in strata of all plots based on the data of typical natural broad-leaved forest in mid-subtropics. [ Result] The results showed that both the S model and C model could fit the whole stand （R^2 〉 0.86） and stratum Ⅲ （R^2 〉 0.58） well, and the RMSE and AMR were small. But both the S model and C model could not fit the stratum Ⅰ and Ⅱ well, the R2 were small, almost stayed and their values were between 0.2 and 0.3. Because of the bigger R2, smaller RMSE and ARM, the C model was selected to compare the height-diameter relations in each stratum, and the bigger AMR would be brought when using the whole stand height-diameter model to estimate the height in each stratum （ except the whole stand） ; although the R2 of the height-diameter model in stratification was small, the AMR of them were smaller than the model of the whole stand, indicating that the error was smaller when using height-diameter model of stratification to estimate the height in ap- propriate stratum. [ Conclusion] It is proved that the research on height-diameter relationship in of forest in strata is both necessary and significant.