Comparison of Runoff Characteristics among Three Close Catchments of Artificial Sugi (Cryptomeria japonica) Forest in a Snowy Region.

DOI JASI Web Site Web Site 6 Citations 4 References
  • Kaneko Tomonori
    Institute of Forestry, Akita Prefecture Agriculture, Forestry and Fisheries Research Center
  • Takeda Kyouichi
    Akita Prefecture Forestry Consultant Association
  • Noguchi Shoji
    Tohoku Research Center, Forestry and Forest Products Research Institute
  • Oohara Hideki
    Kansai Research Center, Forestry and Forest Products Research Institute
  • Fujieda Motohisa
    Forestry and Forest Products Research Institute

Bibliographic Information

Other Title
  • 積雪地帯の近接したスギ人工林３小流域における流出特性の比較
  • セキセツ チタイ ノ キンセツ シタ スギ ジンコウリン 3 ショウリュウイキ ニ オケル リュウシュツ トクセイ ノ ヒカク

Search this article

Abstract

Hydrological observations for 3 water-years, along with soil surveys and investigations of stand condition have been conducted in three catchments formed from tuff of the Tertiary layer (upper, middle, and down) of the Nagasaka experiment in Akita prefecture to identify the effects that differences in stand condition and soil properties had on runoff characteristics. Each catchment was covered with more than 40-year-old stands of planted Cryptomeria japonica. The growth and stem density of Cryptomeria japonica, and the ratio of other species invading the plantation differed among the catchments; such that the forest cover percentages also differed among the catchments. The annual water losses of the catchments showed remarkable individual differences; 724 mm (upper), 861 mm (middle), and 548 mm (down). It was thought that some of these differences occurred because of differing rates of evapotranspiration between the catchments. The annual water loss of the middle catchment was much greater than the annual potential evapotranspiration using the Hamon formula (640 mm), suggesting that deep percolation occurred. The water-holding capacity of each catchment based on the soil survey was 104 mm (upper), 132 mm (middle), and 121 mm (down). The ordering of the water-holding capacities among the three catchments was the same as that for the basin capacity. It was postulated that the shape of the discharge-duration curve of each catchment could be explained by differences in evapotranspiration and the basin capacity.

Journal

Citations (6)*help

See more

References(4)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top