International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 04 | Apr 2023
p-ISSN: 2395-0072
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Impact of Land-use and Land-cover Change Dynamics on Flooding: A Case Study of Safilguda and RamakrishnaPuram Lake Watersheds of Hyderabad Metropolitan Ravali Bharadwaj TR1, Harish Gupta2* 1Research Scholar, Dept. of Environmental Sciences, Osmania University, Hyderabad 2UGC-Assistant Professor, Dept. of Civil Engineering, Osmania University, Hyderabad
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Abstract - Rapid urbanization is a driving force in the
for economic activities (Singh et al., 2015). In this way, a region's land-use and land-cover (LULC) pattern are the outcome of results from natural and prevailing socioeconomic factors, as well as man's utilization of them over time and space (Rawat et al., 2013). Information on LULC is critical for selecting, planning, and implementing management methods to fulfill the growing demand for basic human requirements and the welfare of the world's population (Halmy et al., 2015). Proper information on LULC is required to implement multiple projects, planning, and land use plans to meet the ever-increasing demands for fundamental human necessities. Reliable and up-to-date information on LULC and their dynamics can assist in establishing a foundation for future decision-making in watershed management efforts (Rogan & Chen, 2004). Understanding land-use and land-cover changes (LULCC) are one of the focal areas in the fields of global climate change and global environmental change. LULCC is the most visible representation of human activity's influence on the natural ecosystem of the earth's land surface and a link between human social and economic activities and natural ecological processes (Mooney et al., 2013). Changes in LUCCs are linked to both human and environmental interactions (Liu et al., 2014). Anthropogenic actions drive LULC dynamics, which are extensive, rapid, and substantial processes that cause alterations that impact humans (Agarwal., 2002). For maintaining the sustainable development of natural resources and human habitats, it is strategically crucial to conduct long-term nationwide LULCC monitoring to detect spatial patterns of land-use changes (LUCs) and aid in formulating effective infrastructure management plans (Herrick et al., 2016).
transformation of the natural environment and the spatial layout of cities and towns. It has a negative impact on terrestrial ecosystem productivity and alters urban ecological security. Urbanization directly impacts the land-use land cover (LULC) change of an area, altering the ecological services and their functions. Natural water bodies like rivers, lakes, ponds, and wetlands are all part of the metropolitan landscape. And their importance grows as they carry out their most important environmental and socio-economic roles, including providing drinking water, functioning as sponges by recharging groundwater, maintaining biodiversity, and giving livelihoods. Because of urbanization pressure, various types of depressions and low-lying regions close to or around cities that were acting as cushions and flood absorbers are gradually filled up and built over. Water bodies are being encroached upon at several places and converted to built up to meet the growing populations' demands. LULC changes often determine the spatial dimensions of all of these ecological variables. Remote Sensing and geographical information systems are the best tools for understanding the changes over a period of time. Latest advancements in remote sensing technology and satellite data availability have made spatial analysis easier. The current study examines changes in the LULC of the Ramakrishnapuram and Safilguda Lake watersheds between 1997 and 2016. High-resolution satellite imagery Resourcesat LISS IV of 5.7m resolution was used to understand the change dynamics. The results demonstrate that the areas have seen significant conversions from vegetative areas to built-up areas. The change analysis shows how the rise in impervious surfaces has exacerbated flooding in certain places. Key Words: LULC, Remote Sensing, GIS, Resourcesat, LISS IV
Remote Sensing is useful in quickly evaluating and monitoring natural resources. Remote sensing and GIS integration allow the mapping of land-cover and changes in land-use, thus facilitating future planning, development, and decision-making, which is critical for fulfilling the increasing needs and welfare of an ever-growing population. (Aithal et al., 2017; Anand & Oinam, 2020; Erener & Düzgün, 2009). It is a dependable data source from which we can extract, evaluate and update LULC changes. Moreover, for successful land-use and water resource planning and management, extensive monitoring and modeling of the dynamics of urban sprawl and its implications on land-use patterns and
1. INTRODUCTION Land-cover refers to the dominating physical characteristics of the earth's surface for a given area at a specific point in time. It includes natural attributes such as type and distribution of vegetation, water bodies, soil cover etc, and man-made physical features such as settlements, agriculture fields, and modified vegetation covers. Land-use of a given area refers to how the land has been used by humans and their habitat, with an emphasis on the functional role of land
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