Establishment of dendrochronological procedure in Hokkaido and Zbhoku region used cool-temperate tree

树木年代学是在美国亚利桑那州的干旱地区建立的，在上个世纪初。在美国和欧洲国家，已经成功地进行了许多研究。然而，由于日本降水丰富，气候温和，树木年代学在日本的应用受到质疑。为了将这一方法引入日本，有必要澄清分布广泛、寿命长的树种的同步径向生长。日本树木年代学是由奈良国立文化财产研究所的光谷博士建立的。他从九州到关东地区收集了大量的标本，但主要集中在近畿地区。他在北海道没有研究中心，关于东北地区的数据也很少。他的标本主要来自温带针叶树，如柏树和日本雪松，因为他的研究重点是挖掘材料和建筑材料。这就是现实。 ...更多信息 本项目的目的是通过澄清从关东地区到北海道生长的冷温针叶树HINOKIASUNARO的同步性来建立日本东北部的树木年代学程序。HINOKIASUNARO也被称为HIBA，在北陆地区的地方名称是ATE。因此，HIBA的年轮宽度在Hiyama Assabu（北海道南部）和青森县的津轻之间显示出同步性。在日本青森县和北海道南部的大岛半岛，HIBA已被广泛用作建筑材料或日用品，这一结果表明HIBA也是日本发展树木年代学的有用树种。还对石川县注半岛的ATE进行了初步研究。ASUNARO是HINOKIASUNARO的近缘种，分布于中部地区以北。需要进一步开展包括ASUNARO树在内的同步性研究。少

Dendrochronology was established in the arid region in Arizona, U.S.A., at the beginning of the last century. A lot of studies have been carried out successfully in United States and in the European countries. However, the application of dendrochronology to Japan was regarded as questionable because of the abundant precipitation and the mild climate of Japan. In order to introduce this method into Japan, it is necessary to clarify the synchronized radial growth for widely distributed and long living tree species.Dendrochronology of Japan was established by Dr.Mitsutani, Nara National Research Institute for Cultural Properties. He collected a lot of specimens from Kyushu to Kanto district but concentrated mainly in Kinki area. He has no site in Hokkaido and the data on Tohoku district is very slight. His specimens were consisted mainly from temperate conifers such as cypress and Japanese cedars because his study was focused on excavation materials and building materials. This is the rea … More son why there are a limited number of specimens from northern Japan.The purpose of this project is to establish the dendrochronological procedure in northeast Japan by clarifying the synchronization of HINOKIASUNARO, a cool-temperate needle-leaf tree grown from Kanto district to Hokkaido. HINOKIASUNARO is also called HIBA, and the local name in Hokuriku area is ATE.As a result, the synchronization of annual-ring width of HIBA was revealed between Hiyama Assabu (southern Hokkaido) and Tsugaru, Aomori Prefecture. Because of HIBA has been widely used as a building materials or daily necessaries in Aomori Prefecture and Oshima peninsula, southern Hokkaido, this result shows that HIBA is also a useful tree to develop dendrochronology in Japan. A pilot study was also performed on ATE from Note peninsula, Ishikawa Prefecture. ASUNARO, a close species of HINOKIASUNARO distributes in the area north of Chubu district. It is required to develop further investigations on synchronicity including ASUNARO tree. Less