Species Composition and Species Richness of Herbaceous Vegetation on Lowermost Hillside-slopes in Hilly Yatsuda Landscape
Species Composition and Species Richness of Herbaceous Vegetation on Lowermost Hillside-slopes in Hilly Yatsuda Landscape
复制标题
八田丘陵地貌最低山坡草本植被的物种组成及物种丰富度
DOI：
10.5632/jila.67.551
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
K. Takeuchi
中科院分区：
文献类型：
--
作者：
Yoshiko Kitagawa;S. Okubo;Susumu Yamada;K. Takeuchi
在传统农业景观中发现的每个稻田的堤岸或堤坝已被集中作为具有高物种丰富度的半天然草地栖息地。在八津田丘陵景观的情况下，虽然有几个水库或堤坝类型，次生林边缘稻田最低的山坡上不仅是一个重要的栖息地草地植物，但良好的管理森林物种。通过对北尾川山地边缘植物区系组成的研究，了解了上坡森林植被和地貌特征的差异对物种组成的影响。结果表明，边缘的草本植被由几种生境类型的植物组成，如森林及其边缘、湿地和草地的特定物种。谷头域边缘和坡顶域边缘的物种组成差异显著。我们的结论是，森林边缘的丘陵稻田的强烈影响，上坡森林植被，并定期割草：这些可以使物种丰富度高。
Embankments or levees of each paddy lot found in traditional agricultural landscapes have been focused as semi-natural grassland habitats with high species richness. In case of Yatsuda landscapes in hills, although there are several embankments or levee types, secondary forest verges to paddy fields on lowermost hillside-slopes are an important habitat not only for grassland plants but for well-managed forest species. We researched floristic compositions of the verges in the Kitsuregawa Hills, and understood how the differences of upslope forest vegetation and geomorphologic properties affect the species composition. In results, herbaceous vegetation of the verges consisted of several habitat-type plants such as specific species of forests and their margins, wetlands and grasslands. Species composition was drastically different in between valley-head-domain verges and crest-slope-domain ones. We concluded forest verges to paddy fields in hills were strongly influenced by upslope forest vegetation, and furthermore by periodic mowing: these could make species richness high.