Explication of community types and habitat characteristics in subalpine coniferous forest

亚高山针叶林群落类型及生境特征阐释

• 批准号: 07660186
• 负责人: NAKATA Makoto
• 金额: $ 1.28万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07660186/
• 关键词: Subalpine coniferous forest; Abies mariesii forest; Tsuga diversifolia forest; Fagus crenata forest; Altitudinal distribution; Vegetation; Soil condition; Regeneration style; 垂直分布帯; 地形; 立地環境; 林床植生; 土壌特性; ポドゾル; 更新特性; 樹種分布; 地形解析; 土壌調査; オオシ

1. Distribution, structure and habitat characteristics of forests in upper part of montane zone and lower part of subalpine zone of Mt.Naeba, Niigata Professor.(1) The altitude of the boundary between montane Fagus crenata zone and subalpine Abies mariesii zone changed along topography ; the upper limit of Fagus crenata forests on an even slope lay at higher altitude (1700-1750 m a.s.l.) than that of formerly recognized (ca.1500 m a.s.l.). Tsuga diversifolia forest was found at a ridge in the altitude of 1750 m.(2) Characteristics of understory vegetation were similar between Fagus crenata forests and mixed ones consisted of Fagus crenata and Abies mariesii. However, forests dominated by coniferous trees (Abies mariesii and Tsuga diversifolia) contained many species which were characteristic of subalpine coniferous forests.(3) The nutrient condition and decomposition of organic matter in upper soil horizons of Fagus crenata forests (dark brown forest soil) were relatively better than t … More hose of Abies mariesii forests (wet iron podzolic soil) and Tsuga diversifolia forests (dry podzolic soil).2. Structure and regeneration of Abies mariesii-Tsuga diversifolia mixed forest at a gentle slope (1580 m a.s.l.) near Komatsubara Bog in Mt.Naeba.(1) Both tree species showed assemblage in every stratum. The distribution pattern between strata of Tsuga diversifolia showed positive correlation.(2) Although seedlings of Abies mariesii were found at every habitat, those of Tsuga diversifolia were found only on stumps or mounds. Saplings of Abies mariesii growing on the ground were considered to grow successively and reach the canopy layr.(3) Trees especially Tsuga diversifolia were found on convex habitats. Abies mariesii as well as many uprooted trees were found at even habitats where the soil showed clayy texture. Such uprooted trees presented good regeneration sites to Tsuga diversifolia.(4) Abies mariesii-Tsuga diversifolia mixed forest was formed and maintained through such habitat conditions and regeneration style of the two species. Less

1.新泻苗场山山地上部和亚高山下部森林的分布、结构和生境特征。(1)山地水青冈带和亚高山冷杉带边界的海拔随地形变化；平坦斜坡上的山毛榉森林的上限（海拔高度为 1700-1750 米）比以前公认的海拔高度（海拔高度约 1500 米）要高。海拔1750 m的山脊上发现了铁杉林。(2)水青冈林和水青冈与冷杉混交林的林下植被特征相似。而以针叶林（冷杉和铁杉）为主的森林则含有许多具有亚高山针叶林特征的物种。（3）水青冈林（深棕色森林土壤）上层土壤的养分条件和有机质分解相对优于冷杉林（湿铁灰化土）和铁杉林。 多样化的森林（干燥灰化土）.2。苗场山小松原沼泽附近缓坡(海拔1580米)冷杉-铁杉混交林的结构与更新。(1)两种树种在各层均表现出聚集性。铁杉地层间的分布格局呈正相关。(2)虽然每个生境都发现了冷杉幼苗,但铁杉仅出现在树桩或土堆上。地面生长的冷杉树苗被认为是连续生长并到达树冠层的。(3)在凸状生境中发现了乔木，特别是铁杉。甚至在土壤呈现粘土质地的栖息地也发现了冷杉以及许多被连根拔起的树木。这些被连根拔起的树木为铁杉提供了良好的再生场所。(4)冷杉-铁杉混交林是通过两个树种的这种生境条件和更新方式形成和维持的。较少的

项目成果

Nakata, M.: The world of plants 83 「Coniferous forests」 (Coniferous forests in Japan). Asahi Shinbunsha, 31 (1995)

Nakata, M.：植物世界 83“针叶林”（日本针叶林），31（1995）。