UCL NBS SDGs paper Guide experts Policies wildlife Creation Pond Man PPP model Framework monitoring Landowners degradation small ponds local level Integration Indian ponds crucial role biodiversity intervention flood control Ramveer Tanvar Current Status administration urban expansion positive impact allegianceindia Recommendations legal challenges Circular Economy Development Plans Holistic Approach environmental-DNA mounting pressures small water bodies ecosystem services nutrient retention leadership insights Coordinated efforts Legislative Reforms cost-effective ways larger water bodies carbon sequestration environmental changes community involvement sustainable practices Allegiance Enterprise life cycle assessment Lake/Pond Restoration objective policymaking National Pond Database natural pond processes Incentives Technologies anthropogenic pressures evidence-based insights Freshwater Habitats Trust Allegiance Water Management agricultural intensification POND REJUVENATION Importance sustainable development goals Uniform Classification System Pond Restoration Research Group Worldwide restoration strategies LCA) Ecohydrological Measures Nature-Based Solutions