drainage

Drainage systems optimize the water balance of the soil and are important for the preservation of valuable arable and fodder areas for food security. The settlement area also depends locally on a well-functioning drainage system, because various drainage pipes take over the drainage of surface water or the securing of slip-prone steep slopes排水系统可优化土壤水分平衡，对于保护珍贵的可耕地与饲草用地、保障粮食安全至关重要。聚落区域的本地运行同样依赖于性能良好的排水系统，因为各类排水管网承担着地表水排导以及防护易滑陡坡的职能。