Comparison of the difference of runoff characteristics for pollutant load between environmental and land-use conditions

环境与土地利用条件下污染物负荷径流特征差异比较

基本信息

批准号：
14206027
负责人：
NAKASONE Hideo
金额：
$ 26.37万
依托单位：
Ibaraki University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2005
项目状态：
已结题

项目摘要

The water quality runoff characteristics were compared between the 4 farm village areas of Hokkaido, Kyushu, Honshu Pacific side and Honshu Sea of Japan side. The water quality runoff characteristics of each area were clarified by the monitoring results from each area. With regard to Honshu Pacific side, nitrogen and phosphorus loads were found at high concentrations because of the effect of pig production. It was pointed out that the nutrient loads could be accumulated in the soil and then flowed out. In addition, Tanno pond in Shizuoka Prefecture of Honshu as well, it was confirmed that nitrogen was found at high concentration by the influence of the excessive fertilizer. It was pointed out that this also could be the influence of the cumulative loads in the soil. With regard to the grass dairy watershed in Hokkaido, it was pointed out that the pollutant loads accumulated due to the snow were concentrated at the time of the melting of snow and they flowed out. In addition, the water quality purification characteristics by riparian trees were clarified. In the area on the Sea of Japan side, the repetition use of the irrigation water, which is characteristic of flat ground, is conducted and it was found that pollutants were purified by the operation. In Kyushu area, the characteristics of a water quality changes in Chikugo River basin were clarified. The result suggested that land use affected the changes in water quality. That is, the water quality runoff characteristics in each area were clarified by this year's research. Especially, it was confirmed that conditions of land use largely affected the changes in water quality. The diversity of water quality runoff characteristics among farm village areas could be understood. In the future, integration of the knowledge of the countermeasures for diffuse source pollution is expected. It can be considered that the research on the countermeasure for diffuse source pollution was developed greatly.

比较了北海道，九州，洪斯胡太平洋一侧和日本海岸的4个农场村庄区域之间的水质径流特征。每个区域的监视结果阐明了每个区域的水质径流特征。关于Honshu Pacific侧，由于猪的产生影响，发现了高浓度的氮和磷载荷。有人指出，营养负荷可以积聚在土壤中，然后流出。此外，也可以在过量的肥料的影响下发现氮气中的Tanno Pond在Honshu的Shizuoka县县。有人指出，这也可能是土壤中累积负荷的影响。关于北海道的草奶牛分水岭，有人指出，由于雪融化时，由于雪而堆积的污染物负荷被集中在雪时，它们流出了。此外，阐明了河岸树的水质纯化特征。在日本海侧的区域，进行了灌溉水的重复使用，该灌溉水是平坦地面的特征，发现污染物是通过操作净化的。在九州地区，澄清了奇古戈河流域水质变化的特征。结果表明，土地利用会影响水质的变化。也就是说，今年的研究阐明了每个地区的水质径流特征。尤其是，已经证实，土地使用条件在很大程度上影响了水质的变化。可以理解农村地区水质径流特征的多样性。将来，预计将弥漫性来源污染的对策知识的集成。可以认为，关于弥漫性源污染的对策的研究是大大开发的。