期刊论文

Study on optimum density and mixed proportion of Chinese fir and Phoebe bournei mixed forest based on species diversity

中文

中南林业科技大学学报

1673-923X

2019

39

6

30-37

10.14067/j.cnki.1673-923x.2019.06.005

(169201531-6):全国森林经营科技支撑科研专项 (CX2018B449):湖南省研究生科研创新项目 (20183004):中南林业科技大学研究生科技创新基金

本校为第一机构

以金洞林场杉木纯林、杉木-闽楠混交林为研究对象,对不同密度和混交比例的林分进行研究,将物种多样性指数作为衡量林分密度和混交比例是否合理的参考指标,为人工混交林的经营提供理论依据。采用典型抽样法,按其混交比例分为类型Ⅰ(10杉)、类型Ⅱ(9杉1楠)、类型Ⅲ(7杉3楠)、类型Ⅳ(5杉5楠) 4种类型设置典型样地,同种类型林分设置3个密度等级,低密度(A:600 ~ 1 000株/hm~2)、中密度(B: 1 200 ~ 1 600株/hm~2)、高密度(C:2 000 ~ 2 400株/hm~2),对比分析其林下植被物种组成及多样性差异。结果表明:从类型Ⅰ至类型Ⅳ随着闽楠比例的增加其林下植被的物种数增加。林下灌木及草本Patrick丰富度指数、Sh...

Taking pure Chinese fir forest and mixed Chinese fir-Phoebe bournei forest in Jindong forest farm as the research objects, this paper studied the stands with different densities and mixed proportions, and took the species diversity index as a reference index to judge whether the density and mixed proportions were reasonable or not, which provide theoretical basis for the management of artificial mixed forest. Typical sampling method was used to divide the mixed proportion into four types: type I (10 fir), type II (9 fir 1 Nan), type III (7 fir 3 Nan), type IV (5 fir 5 Nan).The same type of for...