The purpose of study is that it analyzes precipitation retention effective and runoff characteristic of a slope ground roof. A flood of the multiple of a city heat island phenomenon and the upstream with sudden loss of storage of water of the soil by too much packing of earth surface and vegetation, a pitcher, and evaporation mountain capability and a lower stream of a river offers a water cycle and city ecology change. For solution of such a problem, green-tract-of-land restoration must be carried out first fundamentally.
Ⅱ. 실험 방법 및 절차
Ⅲ. 실험 결과