Diagnosis and Planning of Impacts of Land - Cover Changes on the Runoff
What is it about?
Caspian basin is one of the main six basins of country which is influenced by Caspian region in the north of Iran. Because of the growth of human activities and following the changes in land using over the past years, land-cover was changed greatly in this area. The purpose of the article is to study the impact of land - cover changes on the surface of runoff and the Quality of water resources in the years of 2001-2012, in the Caspian basin. MODIS of terra satellite images have been used to do this action in these years of 2001-2012. The results showed that impenetrable surfaces that influence the Production of surface runoff have covered 32.25 percentage of the whole of Caspian basin in 2001. And the level of impenetrable surfaces have decreased to 1.39 percentage by reducing 1.86 percentage. Also, in 2002, the surfaces that changed the quality of water, composed 14.54 percentage of the whole of basin land-cover reached to 17.78 percentage by 3.24 growth until 2012. In order to have a constant profit from water resources and to decrease land-cover impacts on water resources in this basin, providing the management plan of land-cover which includes pre-programmed, planning, implementation, monitoring, and compliance steps which are related to water resources is necessary.
Why is it important?
According to the importance of water in Iran, And at the same time of the increase of water-related crises and the impact that can affect the growth and economic and social development at national and regional level, Management of pressure agents on water resources is necessary And especially changes in land cover that affect on the quantity and quality of hydrological regimes and hence the sustainability of water resources and Providing their policies and management practices is necessary that we will refer to them In this article.