Mountain ecosystems, functioning as indispensable "water towers," face escalating threats from climate change, land degradation, and water insecurity, jeopardizing the livelihoods of downstream populations. This paper presents a comprehensive critical review of integrated strategies designed to enhance the resilience of these vital socio-ecological systems. It synthesizes the theoretical underpinnings and practical applications of Nature-based Solutions (NbS), Sustainable Land Management (SLM), and Integrated Watershed Management (IWM), arguing that their synergy with Traditional Ecological Knowledge (TEK) offers the most robust pathway toward sustainability. The review meticulously examines a portfolio of proven best practices for critical interventions—including multi-zoned riparian buffers and bio-engineering for streamside protection; green drainage channels and bio-stabilized slopes for road management; and systematic, cascade-level rehabilitation of traditional water storage systems. Through a detailed analysis of design considerations, ecosystem services, and suitability criteria, the paper demonstrates that these are not isolated technical fixes but interconnected components of a holistic strategy. The review concludes that successful implementation is fundamentally contingent on a suite of non-negotiable prerequisites: strong and empowered community institutions, participatory governance, cross-sectoral policy integration, and the adaptation of global scientific principles to unique local ecological and cultural contexts.
Umal Hewa Heenpellage (Wed,) studied this question.
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