A GIS-based green infrastructure planning framework for water sensitive spatial planning
by Anju John; Anjana Bhagyanathan
International Journal of Environment and Sustainable Development (IJESD), Vol. 23, No. 2/3, 2024

Abstract: Green infrastructure (GI) as appropriately allocated land-uses in areas that are meant for inundation during intense rainfall, to encourage percolation and thereby reduce runoff is an important aspect of water-sensitive spatial planning. For tropical belts that combine high population density, rainfall, and landscape change due to rapid urbanisation, this is of paramount importance. The paper attempts to lay out an ecological planning framework for flood risk reduction through GI delineation. Multi-criteria decision analysis that takes into account meteorology, geology, geomorphology, surface-water hydrology, soils, and land-use land-cover patterns is being adopted. Physiographic division of river basin is considered the primary organising factor for the framework developed. The method is demonstrated using a typical watershed in Kerala that has witnessed a widespread loss of lives and property during subsequent floods. This framework will have applications in urban and regional planning, nature conservation fields, water-sensitive spatial planning, and climate change resilience planning.

Online publication date: Fri, 05-Apr-2024

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