Great Green Wall: 5,499-hectare palmyra groves to form natural shield along Andhra Pradesh coast
Great Green Wall intiative is part of the government’s objective of achieving 50% green cover in State, restoring degraded ecosystems and conserving natural resources, says Deputy CM
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Context
The Government of Andhra Pradesh has launched the Great Green Wall of Andhra Pradesh initiative, a major plantation drive aiming to plant 55 lakh palmyra seeds across 5,499 hectares along the coastline. This project utilizes a three-tier strategy, incorporating mangroves and palmyra groves, to create a natural shield against cyclones, coastal erosion, and extreme weather events, while supporting the state's goal of achieving 50% green cover.
UPSC Perspectives
Environmental
This initiative is a prime example of ecosystem-based adaptation (EbA), which uses biodiversity and ecosystem services to help communities adapt to the adverse effects of climate change. The proposed 'Great Green Wall' utilizes a multi-layered biological barrier. The first tier consists of mangrove forests, which are crucial for coastal protection as they dissipate wave energy and provide critical breeding grounds for marine life. The second tier, the (Borassus flabellifer), acts as a highly resilient windbreak. Palmyra is particularly suited for this role due to its deep root system, which binds the soil, mitigating coastal erosion, and its ability to withstand high salinity and strong coastal winds. Furthermore, these groves enhance coastal biodiversity by providing habitat. This strategy aligns with broader national efforts for coastal conservation and resilience building against the increasing frequency of extreme weather events linked to climate change.
Geographical & Disaster Management
From a geographical perspective, the eastern coast of India, particularly Andhra Pradesh, is highly vulnerable to tropical cyclones originating in the . The 'Great Green Wall' initiative represents a shift towards nature-based solutions (NbS) for disaster risk reduction (DRR). Traditional hard engineering solutions like seawalls can be expensive and ecologically disruptive. In contrast, bio-shields like the proposed palmyra and mangrove tiers offer sustainable protection. The palmyra trees, acting as the second tier, specifically mitigate the impact of storm surges and high-velocity winds that accompany cyclones. The initiative's focus on planting species adapted to sandy, alluvial coastal soils demonstrates an understanding of the region's specific geomorphological characteristics. This project is a practical application of the Sendai Framework for Disaster Risk Reduction, which emphasizes the role of ecosystems in building resilience.
Governance
The implementation of the Great Green Wall highlights a participatory governance model. The success of such large-scale environmental projects relies heavily on community involvement. The article notes the participation of rural communities, , school students, and various government departments in seed collection and planting. This decentralized approach ensures local ownership and long-term sustainability of the initiative. By engaging communities, the government also fosters environmental awareness and stewardship. Furthermore, the initiative is framed within the broader state objective of achieving 50% green cover, reflecting a proactive policy stance on environmental conservation. This aligns with national targets under the , part of the , which aims to enhance tree cover and ecosystem services.