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Ecological and geochemical modelling of hydrogeological system with particular connection to human health

Cao, Y.Q. and Yang, Y.S. and Hu, K.R. and Kalin, R.M. (2004) Ecological and geochemical modelling of hydrogeological system with particular connection to human health. Ecological Modelling, 174 (4). pp. 375-385.

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Abstract

Environment and human health are closely connected. Ecological, hydrogeological and geochemical factors affect the physical environment in which people live. The niche theory and Schroeder principle that reveal relationship between ecological effects and element contents have important implication on hydrogeochemical study it) the respect of human health. The zones of hydrogeochemistry were studied in the term of ecological, physiological and epidemical effects on organisms based on the ecological rationales and element contents. In the hydrogeochemical zone lack of some elements due to the leaching and transferring, the biological and physiological effect is negatively correlated to the elements contents; whilst in the zone of element enrichment resulting from leaching and concentration, they are positively correlated to the element contents. The appropriate concentration for the organisms is ranged between these two zones. The relationships between environmental elements (e.g. Se. I and F) and endemic diseases, KBD, IDD and dental fluorosis/caries, were analysed in the Li-Liu area, Shanxi province, northern China. In this hydrogeochemical system, the prevalence and severity of these endemic diseases were caused by deficient or excessive contents of Se, I and F in water and soil. Detailed correlation models were established based on epidemical and medical surveys and hydreogeochemical sampling and analyses. (C) 2003 Elsevier B.V. All rights reserved.