Study Of Rainwater Schelping Soil Pollution Into The Water

Water resource shortage is a world problem because of water pollution. Inorganization letting is the worst fountain of polluting after point pollution is solved. Many countries have researched from different sides since sixty ages last century.All kinds of mineral and organic are the composing of soil.These matter can be decomposed by microbe and assimilated by plants.They can also be transported into rivers and lake On some conditions. Phosphorus is the pivotal causing to affluence alimentation of water. Phosphorus exist in mineral of soil and could not be use of plant directly. But a mounts of Phosphorus fertilizer are used in agriculture. It can be schlepped easily into water when falling.Rainwater schlep a great deal of pollutions into the water. So it's the first importance to research the occurring of pollution.Many factors,such as rainwater,vegetation,soil,ground utilizer are involved. Pollutions'quality has important influence to transfer. When one dissolves ealily, more of it would go into the water. On the contray, when a matter's water-solubility is bad,the schlepping quantity lie on the granule and the path.The rainwater mechanism model offer the way of comprehender. The stat model make compution become praxis.Jiuzhai valley contains amount of visitors recent years. Roads and plank roads are built. Vegetation was destroyed. All these take more pollution into lakes. By the way of experiment in subarea ,the gross can be estimated with the help of computers by SCS curve and USLE model. Result indicates that the Phosphorus is about 292.2kg every year.