Scholarly record
IDENTIFICATION OF WATERS UNDER NITRATES POLLUTION THREAT USING MODELLING APPROACH IN OPEN-GIS ENVIRONMENT
Abstract
The paper present the LIFE09 ENV/RO/0 00612 - CLEANWATER project, which foresees the development of an integrated approach for the management of nitrogen pollution, within the river catchments, with emphasis on modelling tools for delimiting the nutrients vulnerable zones, as well as for analyzing the proper measures from the environmental and economical point of view. The Barlad River Basin (surface of 7220 km 2, mean altitude 211 m) represents 17% of the surface of Siret river basin, which is the biggest Romanian river basin, characterized by a great number of agricultural sources a nd nitrate vulnerable zones. The effects of land use planning options, at river basin scal e, are analyzed in the framework of the project, by an entirely computerized syst em. The system includes several software modules that calculate the environmental imp act of human activities, a GIS platform to which all the data is sent and serves as common ground for processing and interpret the results offered. Evaluation of human impact using GIS envi ronment offers a global view of the pollution problems at the basin scale and will improve the lo cal and central authorities’ analysis in the field of nutrient manage ment, especially the waters polluted or threatened by nitrogen pollution. By choos ing a modelling approach combined with current monitoring, the proposed GIS system could be able to answer different environmental questions such as: the impact of existed pollution sources especially on the phreatic aquifers that assure the drinking water supply, the synergy between man- induced changes and climatic changes and hydrological related, the contributions of different sources (point and diffuse sources) to the N and P input to the waters quality, making the deference between agricultural source and others sources(e.g. 77% of the population reject the wastewater directly in the soil). In spite of others European approaches based on use of descriptive parameters and afferent weight system, the CLEANWATER project integrates a holistic view on the water management, being based on a river basi n approach that allows handling in the most effective way different activities affecting the quality and the quantity of the water. The proposal allows simulating both surf ace and groundwater systems and their interaction, making available conjunctive modelling of surface, soil and groundwater. Using modelling approach it is possible to separate the various types of pollution sources (agriculture, industry, localities) in actual and future environmental conditions.
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References5
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www.lifecleanwater.ro (2011) Integrated system for protect and analyse the status and trends of water threatened by nitrogen pollution - LIFE09 ENV/RO/000612
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