Search Climate Insights Directory

The document evaluates four scenarios for restoring Beira Lake: business-as-usual, wastewater treatment upgrades, dredging, and a combined approach. Using the SAVi tool, it analyzes the impact of these interventions on water clarity, property values, and recreational spending between 2020 and 2025. While the combined approach (Scenario 4) generates the highest total benefits, wastewater treatment upgrades (Scenario 2) offer the highest benefit-to-cost ratio.

The guide outlines a five-step methodology to integrate nature-based solutions into project lifecycles, moving from qualitative systems thinking to quantitative economic valuation. It emphasizes the use of systems mapping, climate data analysis, and scenario modeling to compare NbS against traditional 'grey' infrastructure and 'business as usual' scenarios. The framework concludes with strategies for identifying financing structures and communicating findings to diverse stakeholders.

The document details Rwanda's 2004 electricity crisis, which was caused by declining water levels in Lake Bulera due to watershed degradation, poor maintenance, and reduced rainfall. In response, the government implemented the Environment Policy (2003), Environment Law (2005), and Land Law (2005) to protect the Rugezi Wetlands, banning agricultural and pastoral activities within 50 meters of lake shores. These measures, combined with reforestation and erosion control, restored the Ntaruka station to full operational capacity by October 2007. The crisis also prompted Rwanda to diversify its energy portfolio into methane gas, geothermal, and peat resources to reduce vulnerability to hydrological changes and climate change.

The fact sheet highlights a growing trend of incorporating nature-based solutions (NbS) and ecosystem-based adaptation (EbA) into National Adaptation Plans (NAPs). While most NAPs identify biodiversity and ecosystems as priority sectors and a high percentage link climate change to biodiversity loss, there is a gap in referencing national biodiversity strategies. The document provides data on the specific ecosystems and types of actions (such as sustainable management and restoration) most frequently mentioned in NAPs and suggests action points to improve coordination and investment in under-represented ecosystems.

The submission argues that indigenous peoples and local communities (IPLCs) are the most effective guardians of biodiversity, yet they face systemic threats including non-recognition of land rights, 'fortress conservation' models, and violence against land defenders. It provides global case studies of successful community-led conservation and calls for a shift toward rights-based conservation, secure tenure, and the protection of environmental defenders.

Pakistan's NDC 3.0 sets a voluntary target to reduce projected 2035 greenhouse gas emissions by 50%, with 17% achieved unconditionally and 33% conditional on receiving USD 565.7 billion in international climate finance. The plan integrates mitigation across energy, transport, and agriculture with a comprehensive adaptation strategy based on the 2023 National Adaptation Plan. Key priorities include transitioning to a renewable-dominant power mix, expanding electric vehicle adoption, and implementing large-scale nature-based solutions like the Recharge Pakistan programme. The document emphasizes a 'just transition' for the workforce and the integration of gender, disability, and social inclusion (GEDSI) into climate action.

The Master Plan for the Pampa Huari River Basin (PDC-PH) provides a comprehensive strategy to address water scarcity, pollution from mining and urban waste, and land degradation in a semi-arid region of Potosí, Bolivia. Developed under the Bolivia WATCH program using a Robust Decision Making (RDM) framework, the plan integrates water supply (WASH) with basin-wide hydrology. Key findings highlight critical water quality issues, with several rivers classified as 'Class E' (unsuitable for human consumption) due to mining and urban sewage. The plan prioritizes three micro-basins—Kari Kari, Santa Lucia, and Villacollo—for environmental restoration and proposes five strategic lines focusing on ecosystem protection, sustainable water and sanitation, efficient agricultural irrigation, mining impact mitigation, and inter-institutional governance.

The report details the creation of a comprehensive modeling framework for the Syr Darya River Basin, integrating the Water Evaluation and Planning (WEAP) platform, the Low Emissions Analysis Platform (LEAP) with the Next Energy Modeling system for Optimization (NEMO), and a macroeconomic model (Macro). This integrated approach allows for the simulation of complex interdependencies between water availability, energy production, and economic outcomes across Kazakhstan, Kyrgyzstan, Tajikistan, and Uzbekistan. The study evaluates six thematic narratives—ranging from business-as-usual to regional cooperation and ecosystem restoration—under four climate projections (Historical, Dry, Average, and Wet). Key findings indicate that pursuing isolated national interests increases water stress, while regional cooperation and efficiency policies significantly reduce unmet irrigation demands, lower greenhouse gas emissions, and boost agricultural value added and GDP.

The paper examines the role of economic valuation in Watershed Development (WSD) in India, using a benefit-cost analysis (BCA) of a project in Maharashtra to demonstrate positive returns. It identifies significant gaps in data consistency and the failure to value non-market co-benefits, while providing recommendations for integrating economic valuation into climate change adaptation (CCA) strategies.

The document identifies eutrophication as a rapidly growing environmental crisis, noting that over 500 coastal areas worldwide are impacted and dead zones increased from 10 in 1960 to 405 in 2008. It recommends a multi-faceted approach for policymakers, including the implementation of research and monitoring programs, public awareness campaigns, regulatory standards, fiscal incentives, and the restoration of natural ecosystems. The brief emphasizes the need for coordinated institutions and the pursuit of environmental synergies, noting that nutrient pollution policies can overlap with efforts to combat climate change, smog, and acid rain.

The analysis finds that green investments generally create more jobs per US$1 million than unsustainable investments, with ecosystem restoration and building efficiency showing the highest relative gains. However, the paper notes that job quality varies, with informality being a challenge in developing countries and lower wages/benefits compared to unionized traditional sectors in developed countries.

The document examines assisted natural regeneration (ANR) as a flexible, lower-cost alternative to traditional tree-planting, utilizing 24 case studies to highlight the importance of local knowledge and site-specific analysis in ecosystem restoration.

The report argues that investing in natural infrastructure, specifically in the páramos surrounding Bogotá, can generate significant cost savings for the city's water utility by improving sediment and nitrogen control. It highlights a specific investment portfolio in sustainable silvopastoral systems and ecosystem restoration that could yield high economic returns and reduce the need for reservoir expansion.

The document argues that multi-stakeholder NBS initiatives, which have already achieved mitigation and sustainability outcomes, are well-positioned to expand their impact by integrating climate adaptation. It highlights that NBS can be more effective and cost-efficient than business-as-usual interventions, particularly for vulnerable and marginalized groups. The paper identifies opportunities for scaling adaptation through better coordination, sharing tools from adaptation-focused organizations, investing in pilots, and leveraging political momentum. However, it notes that these initiatives are hindered by barriers such as limited technical expertise on adaptation and insufficient funding.

The document argues that while blue carbon ecosystems like mangroves, tidal marshes, and seagrasses are powerful nature-based solutions, their inclusion in national greenhouse gas inventories and adaptation strategies is limited by data gaps and poor institutional coordination. To resolve this, the author introduces the BLUE framework, which consists of four stages: Build (foundational awareness and data), Link (connecting ecosystems to national plans), Unlock (securing finance and cross-sector strategies), and Embed (implementing monitoring and adaptive management). The paper asserts that integrating these ecosystems into national policies can mobilize the political will and finance necessary for large-scale conservation and restoration.

The WRI Results Framework establishes a structured system to plan and evaluate programmatic progress across three primary human systems: food, land & water; energy; and cities. It sets specific global targets for 2030 and WRI intervention targets for 2027, focusing on outcomes such as reducing agricultural land demand by 100 Mha, increasing the share of zero-carbon electricity by 9% in target geographies, and improving urban climate resilience. The framework integrates Sustainable Development Goals (SDGs) and utilizes a tiered approach of global, intervention, and country-specific targets, supported by impact indicators for people, nature, and climate.

The document details Rwanda's 2004 electricity crisis, caused by declining water levels in Lake Bulera due to watershed degradation and poor maintenance of the Ntaruka hydropower station. In response, the government implemented strict land-use policies, including banning agricultural activities in the Rugezi Wetlands, and launched ecosystem restoration projects. These efforts restored the Ntaruka plant to full capacity by October 2007 and prompted Rwanda to diversify its energy portfolio into methane, geothermal, and solar power to increase climate resilience.

Wetlands are aquatic environments that provide critical ecosystem services, including carbon sequestration and water filtration, yet 87% of the world's wetlands have been lost over the last 300 years. They can store up to 50 times more carbon than rainforests and support the livelihoods of 300 to 400 million people. Conservation efforts include the Freshwater Challenge, which aims to commit 350 million hectares of degraded wetlands to restoration by 2030.

The document explains the symbiotic relationship between wildlife conservation and climate action, detailing how various species act as carbon sinks or maintain habitats that capture carbon. It highlights the roles of tigers, elephants, and tapirs on land, and sea otters, whales, and oysters in the ocean, asserting that protecting biodiversity is a critical strategy for meeting climate goals.

The Stakeholder Engagement Plan (SEP) for the Herencia Colombia (HECO) project outlines a multi-level strategy to involve national government entities, regional environmental authorities, and local communities in the management of 20 million hectares of strategic landscapes. The project focuses on four primary mosaic landscapes: Caribe, Central Andes, Orinoquía Transition, and the Macarena-Chiribiquete corridor, as well as the declaration of new protected areas in the Serranía de San Lucas. It emphasizes the inclusion of indigenous peoples, Afro-descendant communities, and women, while aligning with Colombia's Peace Agreement and National Determined Contributions (NDC). The plan includes a formal Grievance Redress Mechanism (GRM) and specific protocols for Free, Prior, and Informed Consent (FPIC) in ethnic territories.