天然阔叶林林分蓄积估算研究——以赣南槠栲林为例  

A Study of Stand Volume Estimation of Natural Broadleaved Forest:Taking Castanopsis Stand in South Jiangxi as an example

作　　者：臧颢[1] 刘洪生 黄锦程 张祖栋 童钱东 宁金魁[1] 欧阳勋志[1] 毛旭鹏 钱升平 ZANG Hao;LIU Hong-sheng;HUANG Jin-cheng;ZHANG Zhu-dong;TONG Qian-dong;NING Jin-kui;OUYANG Xun-zhi;MAO Xu-peng;QIAN Sheng-ping(College of Forestry,Jiangxi Agricultural University, Nanchang 330045,China;Forestry Bureau of Chongyi,Ganzhou,Jiangxi 341300,China;City construction Investment Development Ltd of Yinzhou Districtin Ningbo,Ningbo,Zhejiang 330046,China;Academy of Forestry Inventory & Planning,Nanchang 330046,China)

机构地区：[1]江西农业大学林学院,江西南昌330045 [2]江西省崇义县林业局,江西赣州341300 [3]浙江省宁波市鄞州区城市建设投资发展有限公司,浙江宁波315105 [4]江西省林业调查规划研究院,江西南昌330046

出　　处：《江西农业大学学报》2019年第1期90-98,共9页Acta Agriculturae Universitatis Jiangxiensis

基　　金：全国森林经营科技支撑科研专项协作任务(1692016-05);江西省教育厅科技计划项目(GJJ150411;GJJ160397)~~

摘　　要：为探索天然阔叶林的林分蓄积估算方法,以赣南槠栲天然阔叶林为研究对象,利用7块标准地的数据,采用树冠光竞争高度法(CCH)将槠栲天然阔叶林划分为主林层、演替层和更新层,分析各林层的胸径和树高的平均值、标准差和变异系数,并探讨不同林层株数和蓄积垂直分布的特征。结果表明:槠栲天然阔叶林的垂直结构复杂:分层后各林层的胸径和树高的离散程度由大到小依次为更新层,演替层和主林层;分层后蓄积随林层高度的增加而增加,株数随林层高度的增加而减少。鉴于槠栲林复杂的垂直分布特征,提出分别林层标准木法估算林分蓄积,并与平均标准木法和每木检尺法的估算结果进行了对比,发现:分别林层标准木法在标准地和各林层的蓄积估计结果与每木检尺法无显著差异;平均标准木法由于低估了主林层蓄积且高估了更新层蓄积使得估算的标准地总蓄积偏高。推荐在森林资源调查时,使用分别林层标准木法估算林分蓄积。In order to explore estimating methods for stand volume of natural broadleaved forest,the present study focused on Castanopsis natural broadleaved forest in South Jiangxi,and seven sample plots were used.The stands were divided into main canopy,succession,regeneration layers according to the canopy competition height(CCH).The arithmetic average,standard deviation(SD)and coefficient of variation(CV)of DBH and tree height were analyzed and the characteristics of the vertical distribution of stems and volume in different storeies were explored.The results showed that the vertical structure of Castanopsis natural broadleaved forest was complicated.The dispersion levels of DBH and height in different storeies were in the order of regeneration layer>succession layer>main canopy.The volumes of different storeies increased with the storey height and stems showed an inverse trend.Based on the complicated vertical structure,the present study proposed a volume estimation method based on mean trees in each storey.The results of a comparison with the estimations based on mean trees and the tally method showed that there was no significant difference between the estimation based on mean trees in each storey and the tally method,and overestimation was found based on mean trees because the estimation based on mean trees underestimated the volume of the main canopy layer and overestimated the volume of the regeneration layer.Thus,the estimation based on mean trees in each storey could be used to estimation stand volume in forest resource inventory.

关 键 词：垂直结构 林层 蓄积估计 分别林层标准木法 

分 类 号：S718.5[农业科学—林学]