文献类型：期刊文献

中文题名：马尾松人工公益林林分空间结构优化研究

英文题名：Optimization of Spatial Structure for Pinus massonian Public Welfare Plantations

作者：沈庆华[1] 叶兰华[1] 吴绍发[2] 胡兆贵[2] 江波[3] 童冉[4] 苗永朝[4] 朱念福[4]

第一作者：沈庆华

机构：[1]钱江源-百山祖国家公园龙泉保护中心,浙江丽水323700;[2]庆元林场,浙江丽水323800;[3]浙江省林业科学研究院,浙江杭州310023;[4]中国林业科学研究院亚热带林业研究所,浙江杭州311400

年份：2025

卷号：45

期号：5

起止页码：1-7

中文期刊名：浙江林业科技

外文期刊名：Journal of Zhejiang Forestry Science and Technology

基金：钱江源-百山祖国家公园科学研究项目(2021KFLY12);浙江省“尖兵”“领雁”研发攻关计划(2022C02053)。

语种：中文

中文关键词：人工公益林;马尾松;林分空间结构;空间结构参数;优化

外文关键词：public welfare plantations;Pinus massoniana;stand spatial structure;spatial structural parameter;optimization

分类号：S718.54

摘要：以最小的人为干预、最大程度优化人工公益林林分空间结构,将有助于提高森林生态服务功能。基于3块30 m×30 m马尾松Pinus massoniana人工公益林样地实测数据,在抚育采伐阈值条件(采伐蓄积量不超过15%)下,选择角尺度(W)、混交度(M)、密集度(C)、大小比数(U)、开敞度(K)、竞争指数(CI)和林层指数(S)7个空间结构参数,基于乘除法思想构建空间结构单元评估指标以评价林木未来生长潜力,从而确定采伐木,构建林分空间结构综合评估指标评价林分空间结构状况以确定最优采伐株数。结果显示:在3块马尾松林样地中,样地1、2和3分别有林木112株、95株和133株,而最优采伐株数分别为21株、16株和23株,其中样地2和3的最优采伐株数对应的蓄积量小于采伐阈值;3个样地的林分空间结构综合指数分别增加15.4%、14.3%和16.7%,提升效果明显。本研究提出了马尾松人工公益林林分空间结构优化方法,通过计算机程序模拟采伐,在采伐阈值条件下,实现了以最小的人为干预最大程度优化林分空间结构,在森林经营实践中具有应用价值。
The maximization of stand spatial structure optimization of public welfare plantations achieved with minimal human intervention con-tributes to the enhancement of forest ecosystem service functions.Under the predefined threshold(where the harvest volume does not exceed 15%),seven spatial structure parameters,i.e.uniform angle index(W),species mingling(M),crowding(C),diameter dominance(U),opening degree(K),competition index(CI)and storey index(S),were selected on the basis of field data from three plots(30 m×30 m)of Pinus massoniana.Based onmultiplication and division method,spatial structure unit evaluation indices were constructed to evaluate the growth potential of forest so as to deter-mine the trees to be harvested.A comprehensive evaluation indices for the stand spatial structure was established to evaluate the state of the structure,with the aim of determining the optimal number of trees for harvesting.The results showed that plots 1,2 and 3 contained 112,95 and 133 trees,re-spectively,while the optimal number of trees to be harvested were 21,16 and 23,respectively.Notably,the volumes corresponding with the optimalnumber in plots 2 and 3 were below the harvesting threshold.The comprehensive stand spatial structure index(TF)increased by 15.4%,14.3%,and16.7%,respectively,indicating an obvious effect of improvement.This study proposes an optimization method for the spatial structure of P.massoni-ana public welfare plantations stands.Though computer-simulated logging,the maximum spatial structure optimization with minimal human interven-tion is achieved under the condition of the harvesting threshold,eventually offering practical value for forest management.