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Migration and development for Cryptomeria japonica since the last glacial period in western Japan

末次冰期以来日本西部柳杉的迁徙与发育

基本信息

批准号：
09660170
负责人：
TAKAHARA Hikaru
金额：
$ 2.05万
依托单位：
Kyoto Prefectural University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09660170/
关键词：
Cryptomeria japonica refugia last glacial period postglacial period pollen analysis climate change vegetation change western Japan 隠岐島炭素片分析琵琶湖中国地方近畿地方

项目摘要

Based on this study and previous palynological data (Takahara and Takeoka, 1992 ; Takahara et al., 1999), it is clear that Cryptomeria japonica had full-glacial refugia along the coastal corridor of the Sea of Japan, western Japan. The inference of C.japonica refugia (Tsukada, 1980 ; 1982 ; 1986) is confirmed by the evidence from Oki Islands of this study. Also, this study indicates that the population of C.japonica in the Palaeo-Oki Peninsula was larger than at other sites in western Japan. In the Wakasa Bay area, which is also regarded as a C.japonica refugia, the species increased abruptly in the early Holocene, and then spread throughout the Holocene (Yasuda, 1982 ; Takahara and Takeoka, 1992 ; Takahara et al., 1999). On the other hand, around Lake Shinji, which is located south of Oki Islands on the Sea of Japan coast near the middle of the Chugoku region, development of C.japonica during the early Holocene is not evident (Onishi, 1977), probably because southward migration of C.japonica from the Palaeo-Oki Peninsula into the present coastal area of the middle Chugoku region was prevented by a rapid rise in sea-levels in the late-glacialyptomeria japonica pollen percentages at 18000, 11000, 8000, 6000, 4000 and 2000 yr BP in western Japan were compiled on longitude-latitude and longitude-altitude diagrams. These diagrams shows migration and development for Cryptomrtia japonica from the last glacial maximum to the late Holocene.

根据这项研究和以前的孢粉学数据（Takahara和Takeoka，1992 ; Takahara等人，1999年），很明显，柳杉有充分的冰川避难所沿着日本海，日本西部的沿海走廊。本研究的隐岐群岛的证据证实了日本石蚕避难所（Tsukada，1980 ; 1982 ; 1986）的推论。此外，这项研究表明，在古冲半岛的C.japonica的人口比在日本西部的其他地点。若狭湾地区也被认为是一个C.japonica避难所，该物种在全新世早期突然增加，然后在整个全新世蔓延（Yasuda，1982 ; Takahara和Takeoka，1992 ; Takahara等人，1999年）。另一方面，位于日本海沿岸隐岐群岛以南、靠近中国中部的新治湖周围，在全新世早期日本石松的发展并不明显（Onishi，1977年），这可能是因为日本石龟从古冲半岛向南迁移到现在的中国中部沿海地区受到海平面迅速上升的阻碍，在18000年、11000年、8000年、6000年、4000年和2000年BP的晚冰期日本柳杉花粉百分比水平上编制了纬度和海拔图。这些图显示了日本柳杉从末次盛冰期到全新世晚期的迁移和发展。