Characteristics of soil and soil macro-fauna in relation to slope directions in cool temperate natural forests and larch plantations of Ashoro Research Forest.

Hishi Takuo, Maeda Yuka, Tashiro Naoaki

doi:10.15017/17054

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九州大学北海道演習林の天然落葉広葉樹林およびカラマツ人工林における斜面方位に着目した土壌と大型土壌動物の特徴
九州大学北海道演習林の天然落葉広葉樹林およびカラマツ人工林における斜面方位に着目した土壌と大型土穣動物の特徴
キュウシュウダイガクホッカイドウエンシュウリンノテンネンラクヨウコウヨウジュリンオヨビカラマツジンコウリンニオケルシャメンホウイニチャクモクシタドジョウトオオガタドジョウドウブツノトクチョウ

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Abstract

Slope positions and slope directions are important factors for micro-climates of forest ecosystems and should affect soil conditions. This study demonstrates characteristics of soil and soil-macrofauna communities in relation to slope positions and directions in natural cool-temperate deciduous broad leaved forests and in plantations of deciduous conifer, Japanese larch of ARF (Ashoro Research Forest) where vegetation patterns have been well surveyed. Soil characteristics of north-facing slopes and bottom valley were mesic with high water content and A depth, and low C/N ratio and A0 accumulation relative to those of southfacing slopes in both natural and plantation forests. Density and biomass of earthworms was higher in north-slopes and bottom of valley than south-slopes. Community structure of macro-fauna in northern-slopes and bottom of valley were different from that of southern-slopes. They were different between in plantation and in natural forests within north-slopes and bottom of valley. Population density of earthworms was negatively correlated with A0 thickness community were quite different between slope directions.

Journal

九州大学農学部演習林報告

九州大学農学部演習林報告 91 1-6, 2010-03-25

Kyushu University Forests

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