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Basic Research on Estimation of Water Resource Pollution Possibility based on Microbial-Hydrology

基于微生物水文学的水资源污染可能性估算基础研究

基本信息

批准号：
17360232
负责人：
SAKAMOTO Yasushi
金额：
$ 3.2万
依托单位：
University of Yamanashi
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

项目摘要

In this research project, we examined microbial runoff to river water, microbial transport through slope soil and microbial purification of river water based on a new concept, 'Microbial-Hydrology' aiming at development of methods for the estimation of microbial pollution of water resources. For the examination of microbial runoff, we observed and analyzed the river water concentrations of Escherichia coli and Legionella bacteria. The results of E. coli analysis showed that the E. coli attached to suspended solids did not influence the runoff patterns of E. coli so much and that E. coli is not so effective index in natural environments though it is an important index for pathogens. The results of Legionella bacteria analysis showed their distribution in river waters etc. in Yamanashi Pref. and the characteristics of quality of water including them. The results of microbial transport analysis showed the relationship between the microbial transport and the solute transport through the slope soil, and the difference in the transport direction between wet condition and relatively dry condition. The results of microbial purification analysis showed that the amount and the composition of the bacillus group that is related to the self purification depended on the amount of supply of the substrate from algae to the bacillus group and a quantity of solar radiation that decides the amount of algae has a big influence on the water quality purification function, and that the soil carbon content in the slope and the riparian zone is an important environmental agent that influences the living of the nitrifier.

在本研究项目中，我们研究了微生物径流到河水，微生物通过坡面土壤的迁移和微生物净化河水的基础上的一个新的概念，“微生物水文学”，旨在开发的方法来估计水资源的微生物污染。在径流微生物检测方面，我们对河水中大肠杆菌和军团菌的浓度进行了观察和分析。E. coli分析表明，E.悬浮物上附着的大肠杆菌不影响大肠杆菌的径流模式。大肠杆菌中的大肠杆菌。在自然环境中，大肠杆菌是一种重要的病原体指标，但在自然环境中并不是很有效的指标。军团菌分析的结果显示了山梨县河流沃茨等中军团菌的分布以及包括军团菌在内的水质特征。微生物运移分析结果表明，微生物运移与溶质运移之间存在一定的关系，且在湿润和相对干燥条件下运移方向存在差异。微生物净化分析的结果表明，与自净化相关的芽孢杆菌群的数量和组成取决于藻类向芽孢杆菌群提供底物的量，决定藻类数量的太阳辐射量对水质净化功能有很大影响，坡面和河岸带土壤碳含量是影响硝化细菌生存的重要环境因子。