丘陵地谷底水田に接する下部谷壁斜面下端の刈り取り草原における植物種組成と環境要因との対応(平成17年度日本造園学会全国大会研究発表論文集(23))

概要

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Forest verges to paddy fields on lowermost hillside slopes are considered one of the most important habitats not only for managing forest species but also for serni-natural meadow species and species in wet conditions in the Satoyama landscape. To clarify the floristic composition of the verges in relation to environmental characteristics such as light intensity, surface soil water content, slope, slope direction and soil thickness, we sampled 33 research plots in the Tama Hills, central Japan. The results showed that although geomorphic locations were almost the same, light intensity and surface soil water content varied among plots, and these differences affected species composition. In the compositional groups of TWINSPAN classification, light intensity and surface soil water content were the principal factors that affected plant species composition. Brighter conditions due to mowing management as well as slope direction significantly enhanced the number of both meadow species and species in fields or at roadsides, while wetter conditions due to the location of aquifer and the difference in soil thickness meant a significant increase in the abundance of wetland species.
社団法人日本造園学会の論文
2005-03-31