A new formal classification for Japanese forest vegetation based on traditional phytosociological concepts
A new formal classification for Japanese forest vegetation based on traditional phytosociological concepts
复制标题
基于传统植物社会学概念的日本森林植被新的正式分类
DOI：
10.1111/avsc.12611
复制
发表时间：
2021
影响因子：
2.8
通讯作者：
Hoshino Yoshinobu
中科院分区：
文献类型：
--
作者：
Noriyuki Masaomi;Kondo Hirofumi;Shitara Takuto;Yoshikawa Masato;Hoshino Yoshinobu
AimsTo提出一个全面的分类框架，日本森林植被，专家系统的基础上，传统的系统开发，使用大规模的数据集，覆盖整个日本.位置整个日本群岛. MethodsA数据集的12，720植被样地从国家植被调查数据库建立。在此基础上，开发了一个自动分级专家系统。通过保真度指标、传统特征种的出现率、与半监督K均值和改进的TWINSPAN的一致性以及各单元之间的相似性来验证分类的有效性。为了研究与环境变量的对应关系，使用了具有"envfit"函数的去趋势对应分析。此外，发生的类群进行了整理和比较与植物群名单周围的地区Japanes.ResultsThe日本森林数据集被分为34个联盟的专家系统，和14个订单和6类区分。这些单元中的大多数具有包括现有特征种在内的诊断分类群，Bray-Curtis指数的热图显示了每个单元的独立性，以及分配给同一单元的小区组的相似性。在34个联盟中，半监督K均值聚类支持21个联盟，修改后的TWINSPAN支持16个联盟。这四个类别对应于热条件，并支持现有的植被带概念。较低层次的植被单元对应的环境变量范围比较高层次的单元窄，物种组成随有限的环境变量而变化。一个植物区系组成的比较强调了日本forests.ConclusionsThis研究的物种组成的复杂性提出了第一个正式的日本森林分类在类，顺序和联盟的水平，反映传统的植物社会学系统和大规模的植被样地数据的基础上。我们的分类提供了一个重要的基础，为未来修订正式的植物社会学系统在整个东亚。
AimsTo propose a comprehensive classification framework for Japanese forest vegetation, an expert system based on a traditional system was developed, using a large‐scale data set covering the whole of Japan.LocationThe entire Japanese archipelago.MethodsA data set of 12,720 vegetation plots from the National Vegetation Survey database was established. Then, an expert system for automatic hierarchical classification was developed, based on the traditional system. The classification effectiveness was verified using fidelity measures, the occurrence of traditional characteristic species, consistency with semi‐supervised K‐means and modified TWINSPAN, and the similarity between each unit. To investigate correspondence to the environmental variables, a detrended correspondence analysis with the “envfit” function was used. Additionally, the occurring taxa were collated and compared with the flora lists of areas surrounding Japan.ResultsThe Japanese forest data set was classified into 34 alliances by the expert system, and 14 orders and six classes were distinguished. Most of these units had diagnostic taxa including existing characteristic species and the heatmap of the Bray–Curtis index showed the independence of each unit, and the similarity of the plot groups assigned to the same unit. Out of 34 alliances, clustering with semi‐supervised K‐means supported 21 alliances, and modified TWINSPAN supported 16 alliances. The four classes correspond to the thermal conditions and support the existing concept of vegetation zones. The lower‐level vegetation units correspond to a narrower range of environmental variables than higher‐level units, and species composition varied with limited environmental variables. A floristic composition comparison emphasized the complexity of the species composition of Japanese forests.ConclusionsThis study proposes the first formal Japanese forest classification at the class, order, and alliance levels, reflecting traditional phytosociology systems and based on large‐scale vegetation plot data. Our classification provides an important foundation for the future revision of formal phytosociological systems throughout East Asia.