Biome classification from Japanese pollen data: application to modern-day and Late Quaternary samples
Biome classification from Japanese pollen data: application to modern-day and Late Quaternary samples
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DOI：
10.1016/s0277-3791(01)00046-4
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发表时间：
2002-02
影响因子：
4
通讯作者：
K. Gotanda;T. Nakagawa;P. Tarasov;J. Kitagawa;Yasushi Inoue;Y. Yasuda
中科院分区：
文献类型：
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作者：
K. Gotanda;T. Nakagawa;P. Tarasov;J. Kitagawa;Yasushi Inoue;Y. Yasuda
将34个树栖花粉分类群划分为植物功能型，并将其划分为日本及邻近地区的8个森林生物群。当应用于来自日本的285个表面花粉光谱时，该方法将78%(222个位置)的样本分配到正确的生物群。该方法特别适合于暖性混交林、温带落叶混交林、温带针叶林和凉性混交林的重建，但凉性针叶林的重建难度较大。该方法已应用于日本中部三叶湖(35°33‘22“N，135°53’40”E，0ma.s.l)晚第四纪的孢粉记录。重建距今约4万年以来的植被变化。重建结果表明，在距今2.5万年前，三叶湖周围以温带落叶林为主。在距今约2.2万年至约1.8万年之间，重建了一个凉爽混交林阶段(目前仅存在于北海道东北1000公里处)，对应于末次冰川的最冷阶段。这一最冷的阶段被两个过渡阶段所限制，这两个过渡阶段的特点是凉性混合落叶森林植被和温带落叶森林植被的共同优势。全新世植被以今天生长在遗址周围的温暖混交林为代表。
Thirty four arboreal pollen taxa were assigned to plant functional types and then classified to eight forest biomes in Japan and adjacent areas. When applied to 285 surface pollen spectra from Japan, the method assigns 78% (222 sites) of the samples to the correct biome. The method is particularly good at reconstructing warm-mixed, temperate deciduous, temperate conifer and cool-mixed forests, but the reconstruction of cool-conifer forest was difficult. The method has been applied to the late Quaternary pollen record from Lake Mikata, central Japan (35°33’22” N, 135°53’40” E, 0ma.s.l.) to reconstruct vegetation changes since ca 40,000yr BP. The reconstruction shows that temperate deciduous forest dominated around Lake Mikata before 25,000yr BP. A phase of cool-mixed forest (now present only in Hokkaido, 1000km to the northeast) is reconstructed between ca 22,000 and ca 18,000yr BP, corresponding to the coldest stage of the Last Glaciation. This coldest phase is bound by two transition phases that are characterized by co-dominance of cool-mixed and temperate deciduous forest vegetation. The Holocene vegetation is represented by warm-mixed forest that grows around the site today.