Ecogeography of Japanese beech (Fagus crenata Blume) in the Pacific side of eastern Japan and its conservation

日本东部太平洋沿岸日本山毛榉（Fagus crenata Blume）的生态地理及其保护

基本信息

批准号：
14580604
负责人：
HARA Masatoshi
金额：
$ 1.66万
依托单位：
Natural History Museum and Institute, Chiba
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

Ecogeography of Japanese beech (Fagus crenata Blume) in the Pacific side of eastern Japan (Yamizo Mts., Abukuma Mts.and Kitakami Mts.) was studied. Database on the distribution of Japanese beech in the area was constructed on the basis of 187 specimens,243 literatures,28 personal communications from researchers and 15 internet homepages. In 69 locations in the area, leaf samples and specimens were collected from 188 beeches. The field research on forest structure and its species composition was carried out in 45 locations. The extensive distribution of Japanese beech in the area was clarified, viewed both from horizontal and longitudinal aspects. The lower limit of longitudinal distribution of beech corresponds to the line where Kira's Warmth Index, WI=90(C・month), Cold Index, CI=-10(C・month), mean temperature of the coldest month, January, +1C, the line also corresponding to the upper limit of evergreen broad-leaved trees such as evergreen oaks. In the inland part of the area, Toriash … More i Mts.and Torinoko Mts., relict distribution of Japanese beech in the warmer area was observed. Japanese beech occurred as a component of mixed forests composed of various deciduous species (another beech, Fagus japonica, deciduous and evergreen Quercus spp., Carpinus spp.etc.) and some conifers (Abies firma and Pious densiflora) in the lower altitudes of the area, but increased its dominance with the increase of the altitudes, and became the most dominant species of the forest in the higher altitudes of the area. The conservation status of natural forests including Japanese beech in the area was summarized, and the effective countermeasures for the conservation of Japanese beech in the area were considered. Pollen analysis was made for samples collected from surface soil under beech forests in the area, and for sediments collected from Hinuma moor located on the southernmost part of the area. Consideration to the conservation of beech forests was also made from the viewpoint of vegetation history of the area. Less

研究了日本东部太平洋一侧（Yamizo Mts。，Abukuma Mts。和Kitakami Mts）的日本山毛榉（Fagus crenata blume）的生态地理学。基于187个标本，243个文献，研究人员的28个个人通讯和15个互联网主页建造了有关该地区日本山毛榉的分布数据库。在该地区的69个位置，从188个山毛榉收集了叶片样品和标本。关于森林结构及其物种组成的现场研究是在45个地点进行的。从水平和纵向方面看，阐明了日本山毛榉在该地区的广泛分布。 Beech的纵向分布的下限对应于Kira的温暖指数，WI = 90（C・月），冷指数，CI = -10（C ・月），1月 +1C的平均温度（C ・月），该线的平均温度也对应于Evergreen Oaks等常绿宽阔的树木的上限。在该地区的内陆地区，托里亚什…更多。和Torinoko Mts。，观察到日本山毛榉在温暖区域的遗物分布。日本山毛榉是由各种落叶物种（另一个山毛榉，fagus japonica，落叶和常绿山pp，carpinus spp.etc。）组成的混合森林的组成部分，以及在该地区较低的统治地位，大多数人占领着森林的统治地位，并且大多数人占据了统治地位，并且大多数人都成为了高度的统治地位。该地区的海拔。总结了包括日本山毛榉在内的天然森林的保护状况，并考虑了该地区日本山毛榉的有效对策。对从该地区的山毛榉森林下的表面土壤中收集的样品进行了花粉分析，并从该地区最南部的Hinuma Moor收集的沉积物进行了花粉分析。从该地区的植被历史的角度来看，还考虑了山毛榉森林的保护。较少的