HETEROTROPHIC BACTERIA IN WATER DISTRIBUTION-SYSTEMS .1. SPATIAL AND TEMPORAL VARIATION

被引:47
作者
MAUL, A [1 ]
ELSHAARAWI, AH [1 ]
BLOCK, JC [1 ]
机构
[1] ENVIRONM CANADA,CANADA CTR INLAND WATERS,NATL WATER RES INST,BURLINGTON L7R 4A6,ONTARIO,CANADA
关键词
MATHEMATICAL TECHNIQUES - Correlation Methods - WATER ANALYSIS - WATER SUPPLY - Sampling - WATER SUPPLY TUNNELS - Metz; France;
D O I
10.1016/0048-9697(85)90094-4
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The drinking water distribution system of the city of Metz in France was sampled intensively during six monthly surveys which were designed to determine the spatial and temporal distribution of total heterotrophic bacteria in the network. A non-hierarchical nearest-centroid clustering method was used for dividing the water distribution system into zones corresponding to different levels of bacterial density. The general pattern of the spatial heterogeneity showed a high degree of reproducibility. Since the frequency distribution of total heterotropic bacteria within the zones were compatible with the negative binomial distribution, the water distribution system studied may be considered as being composed of several heterogeneous subsystems. The consistency of this structured spatial dispersion pattern of bacteria in light of some physical and chemical characteristics of the system is evident.
引用
收藏
页码:201 / 214
页数:14
相关论文
共 17 条