Effects of biochar usage and plant species selections on the storm water runoff mitigations by green roofs

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  • Junki MUGITA
    Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • Kazuaki TSUCHIYA
    Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • Tatsuya MATSUOKA
    Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • Susumu YAMADA
    Graduate School of Agricultural and Life Sciences, The University of Tokyo Faculty of Agriculture, Tokyo University of Agriculture
  • Toshiya OKURO
    Graduate School of Agricultural and Life Sciences, The University of Tokyo

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  • 屋上緑化の雨水流出抑制機能に植物種の違いとバイオチャーの利用が与える影響
  • オクジョウ リョッカ ノ アメ ミズリュウシュツ ヨクセイ キノウ ニ ショクブツシュ ノ チガイ ト バイオチャー ノ リヨウ ガ アタエル エイキョウ

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Abstract

<p>This paper describes an experiment that investigates the influence of plant species choices and the impact of mixing biochar in growing mediums on the amount of water runoff from a simulated green roof. We also measured drought tolerance of different plant species with visual rating method. We found that water runoff mitigation capacities under 100 mm/h rain simulations were higher in Lolium multiflorum Lam compared to Imperata cylindrica (L.) Beauv. and sedum species probably due to differences in their biomass and transpiration rate. We also found that mixing biochar in growing mediums may not change drought tolerance of grass species.</p>

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