The impact of land use on microbial surface water pollution

被引:29
|
作者
Schreiber, Christiane [1 ]
Rechenburg, Andrea [1 ]
Rind, Esther [2 ]
Kistemann, Thomas [1 ]
机构
[1] Univ Bonn, Inst Hyg & Publ Hlth, D-53105 Bonn, Germany
[2] Univ Edinburgh, Sch Geosci, Inst Geog, Edinburgh EH8 9XP, Midlothian, Scotland
关键词
Environmental hygiene; Land use; Non-point sources; Run-off; Surface water pollution; SEWAGE-TREATMENT PLANTS; DRINKING-WATER; OVERLAND-FLOW; QUALITY; CRYPTOSPORIDIUM; TRANSPORT; CONTAMINATION; CATCHMENT; RAINFALL; DISEASE;
D O I
10.1016/j.ijheh.2014.09.006
中图分类号
R1 [预防医学、卫生学];
学科分类号
1004 ; 120402 ;
摘要
Our knowledge relating to water contamination from point and diffuse sources has increased in recent years and there have been many studies undertaken focusing on effluent from sewage plants or combined sewer overflows. However, there is still only a limited amount of microbial data on non-point sources leading to diffuse pollution of surface waters. In this study, the concentrations of several indicator microorganisms and pathogens in the upper reaches of a river system were examined over a period of 16 months. In addition to bacteria, diffuse pollution caused by Giardia lamblia and Cryptosporidium spp. was analysed. A single land use type predestined to cause high concentrations of all microbial parameters could not be identified. The influence of different land use types varies between microbial species. The microbial concentration in river water cannot be explained by stable non-point effluent concentrations from different land use types. There is variation in the ranking of the potential of different land use types resulting in surface water contamination with regard to minimum, median and maximum effects. These differences between median and maximum impact indicate that small-scale events like spreading manure substantially influence the general contamination potential of a land use type and may cause increasing micro-organism concentrations in the river water by mobilisation during the next rainfall event. (C) 2014 Elsevier GmbH. All rights reserved.
引用
收藏
页码:181 / 187
页数:7
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