基于单木断面积生长量的湖南栎类次生林立地评价研究  

Study on site evaluation of secondary forest of oak based on individual basal area increment in Hunan Province

作　　者：廖波[1] 戴兴安[2] LIAO Bo;DAI Xing′an(Forestry Bureau of Huarong County,Huarong 414200,Hunan,China;Central South University of Forestry and Technology,Changsha,410004,Hunan,China)

机构地区：[1]华容县林业局,湖南华容414200 [2]中南林业科技大学,湖南长沙410004

出　　处：《湖南林业科技》2020年第3期17-25,共9页Hunan Forestry Science & Technology

摘　　要：立地质量评价是林业工作中开展森林经营活动的基础,而混交次生林的立地评价是目前研究亟需解决的难点。本研究基于湖南省一类清查3期的栎类次生林调查数据,以单株栎类的胸径和5年断面积生长量为评价指标,参考地位级指数的编制方法,探讨了4种不同栎类组分数据在栎类混交林立地质量评价方面的可行性。结果表明:Ⅱ类数据的最优导向曲线为幂函数,Ⅰ、Ⅲ、Ⅳ类的最优导向曲线为Gompertz方程;利用Ⅰ、Ⅱ、Ⅲ、Ⅳ类数据评价栎类立地质量的精度分别为66.7%、56.2%、63.3%和78.2%,Ⅳ类数据精度最高,说明以样地内所有栎类树木的胸径与5年断面积生长量为评价指标的立地质量评价方法精度较高,可为湖南省栎类次生林的立地质量评价提供参考。The evaluation of site quality is the basis of forest management in forestry.In current research,the site evaluation of mixed secondary forest is a difficult point to be solved.Based on the survey data of oak secondary forest in 3 consecutive periods of forest resources inventory in Hunan Province,referring to the method of site class,the feasibility of 4 kinds of oak component data in site quality evaluation of mixed oak forest was discussed by taking the diameter of individual tree and the increment of basal area in 5 years as evaluation indexes.The results showed that the optimal guidance curve of typeⅡdata was power function,and the optimal guidance curve of typeⅠ,ⅢandⅣwas Gompertz equation.The accuracy of evaluating oak site quality by using classⅠ,Ⅱ,ⅢandⅣdata was 66.7%,56.2%,63.3%and 78.2%respectively,and class IV data had the highest accuracy.It indicated that the site quality evaluation method with the DBH and 5-year increment of basal area of all oak trees in the sample plot as the evaluation indexes had higher accuracy.The results could provide reference for site quality evaluation of oak secondary forest in Hunan Province.

关 键 词：栎类 断面积生长量 立地评价 方法 增长指数级 

分 类 号：S757.22[农业科学—森林经理学]