摘要
森林经营模式评价是筛选有效经营技术和森林经营决策的基础,为了探讨小陇山林区锐齿栎天然阔叶混交林林分状态对不同森林经营模式的响应,为天然次生林经营提供有益方法,以小陇山林区地带性顶级群落状态特征为参照,从空间利用、树种多样性、建群种竞争势、林分组成4个方面采用遗传绝对距离和相对差异率法量化不同经营模式锐齿栎天然混交林与参照林分的状态差异。结果表明,按结构化森林经营模式进行经营的次生林,其林分状态与参照林分最为接近,其次是天然林采育择伐模式和近自然森林经营模式,平均差异分别为0.141、0.183和0.197。结构化森林经营能使所经营的次生林更加接近自然,尤其在物种多样性和建群种竞争态势方面与地带性顶级群落状态特征差异最小,仅为0.047和0.069。
The evaluation of forest management model is the basis of selecting effective management technology and making forest management decision.This paper explored the response of the stand state to different forest management models for the Quercus aliena var. acuteserrata natural broad-leaved mixed forest in Xiaolongshan,so as to provide reference for the forest management decision-making.This study took the state characteristics of zonal climax community in Xiaolongshan Forest Region as a reference forest.The evaluation indices of forest state were selected from the space utilization,tree species diversity,constructive species competition potential,and stand composition.The genetic absolute distance and relative difference rate methods were used to quantify the differences of forest state between different foret management models of the Quercus aliena var. acuteserrata natural mixed forests and the reference stand.The results showed that the differences of stand state characteristics between structure-based forest management model and reference forest was closest,followed by the close to nature forest management model and selective cutting-tending model,with average differences of 0.141,0.183 and 0.197,respectively.The structure-based forest management can make the secondary forest to be closer to primary forest,especially in the aspect of species diversity and the competition potential of dominant species,it had the least differences with the zonal climax community status,which is only 0.047 and 0.069.
作者
王秋丽
张岗岗
WANG Qiu-li;ZHANG Gang-gang(Chinese Academy of Forestry,Beijing 100091,P.R.China;Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,P.R.China)
出处
《西部林业科学》
CAS
北大核心
2019年第2期151-158,共8页
Journal of West China Forestry Science
基金
中央级公益性科研院所基本科研业务费专项基金"陕西主要植被类型的空间分布及其生态效益评价"(CAFYBB2017MB039)
关键词
采育择伐
结构森林经营
近自然森林经营
森林经营模式
锐齿栎
selective cutting-tending
structure-based forest management
close-to-nature forest management
forest management model
Quercus aliena var.acuteserrata