Hydrological Modelling Analysis on Impacts of Climate Variability and Land use Change with of at Approach

Abstract

Earth's surface is home to a vast amount of water, one of the planet's most important natural resources. Global water resources are expected to be approximately 43,750 km3 / year, according to the Food and Agriculture Organization (FAO 2003). America contains the most freshwater on the continent, accounting for 45 percent of the total, followed by Asia (28 percent), Europe (15.5 percent), and Africa (9 percent). Farming (69 percent) is followed by industries (19 percent) and municipalities (10 percent) in terms of water consumption worldwide (12 percent ). In terms of agricultural water consumption, Asia is the second-largest continent after North America. India is a developing country in Asia, and as the population grows, so will the need for water and food to meet the country's agricultural and food production needs. For the Murappanadu and A.P.Puram stations, yearly streamflow increased by 10.2 percent and 20.3 percent, respectively, due to climate variability and land use change. Additional data showed that in the Murappanadu and A.P.Puram stations, the percentage (percentage) of the share for land use change alone was -0.1% and 0.1%, respectively, while for climate change alone was 10.3% and 20.2%. Compared to land use change, the SWAT simulation findings show that hydrological processes and water balance components respond significantly to climatic variability.