Forest types and the species diversities of their woody plants in Mie Prefecture
Forest types and the species diversities of their woody plants in Mie Prefecture
复制标题
三重县森林类型及其木本植物物种多样性
DOI：
10.11519/jjfs1953.70.6_269
复制
发表时间：
1988
期刊：
影响因子：
--
通讯作者：
Hiroyuki Kimura
中科院分区：
文献类型：
--
作者：
A. Takeda;Hiroyuki Kimura
为了为检验反映自然保护的造林系统提供基础资料，对三重县几种森林类型的物种多样性（H′）和均匀度（J′）进行了调查。在自然植被类型中，亚高山针叶林由于物种数量少，多样性最少。山地落叶阔叶林与亚山地和低地常绿橡树月桂林的多样性非常相似。而暖温带针叶林由于优势度较高，物种数量虽多，但多样性较低。在替代植被类型中，常绿阔叶树和日本红松（Pinus densiflora SIEB）组成的小丛。（et ZUCC.）森林种类多，优势度低，多样性高。日本柳杉和柞蚕人工林的研究。调查。由单一种植物种占据优势地位的地区，其多样性最少。森林物种多样性明显受到物种数量和优势度的双重影响。因此，为了保持自然保护中木本物种的高度多样性，不仅能够维持大量物种，而且能够抑制优势集中的造林系统是必要的。
To obtain the basic data for the examination of silvicultural systems that reflect nature conservation, the species diversity (H') and evenness (J') of several forest types in Mie Prefecture were investigated. In natural vegetation types, the subalpine coniferous forest has the least diversity because of the small number of species. Deciduous broadleaved forests in the mountane zone and evergreen oak-laurel forests in the submountane and lowland zones have very similar diversities. Warm-temperate coniferous forests, however, have low diversity regardless of the large number of species because of their higher dominance concentrations. In substitutional vegetation types, a coppice of evergreen broadleaved trees and a Japanese red pine (Pinus densiflora SIEB. et ZUCC.) forest are of high diversities because of their large number of species with week dominance concentrations. The plantations of Cryptomeria japonica D. DON and Chamaecyparis obtusa SIEB. et ZUCC., with strong dominance by a single, planted species, have the least diversities. The species diversity of the forest obviously is affected by both the number of species and the dominance concentration. Thus, to maintain a high diversity of woody species for nature conservation, silvicultural systems that are able not only to sustain a large number of species but also are able to restrain a concentration of dominance, are desired.