[Application of the Geographical Information System for assessment of agricultural impact on environment]
2000
Kirsteina, D. (Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Rural Engineering. Dept. of Environmental and Water Resources Management)
Experience of the European Union countries shows that intensive agriculture is on of the main pollution sources of nitrogen and phosphorus, which causes eutrophication of water and pollution of groundwater. The report describes the methodology for evaluation of agricultural impact on the environment. The Geographic Information System (GIS) is a very good tool for this purpose. There are two main groups of factors: natural impact and factors reflecting human activities. The paper are reviewed a number of data on both soil and groundwater media, run-off, potential of erosion risk, agricultural activities, such as agricultural land, arable land, soil drainage, and application of fertilizers. The most prevalent factors has been used for the multi-criteria decision making analysis.
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