Climate change causes, impacts and solutions for LDC

Climate change is the long-term change in the average weather pattern (temperature, rainfall, seasons) of the Earth or a region, mainly due to an increase of greenhouse gases from human activity, which causes global warming.

Causes

• Burning fossil fuels (coal, oil, gas) in power plants, vehicles and industries – main source of CO₂.
• Deforestation and land-use change – fewer trees to absorb CO₂.
• Agriculture – methane from paddy and livestock; N₂O from fertilisers.
• Industry and waste – cement, brick kilns, halocarbons (CFCs/HFCs), methane from landfills.
• Population growth and urbanisation – increasing energy demand.
• Natural factors (solar changes, volcanoes, El Niño) play a smaller role.

Impacts

• Global temperature rise (about 1.1–1.2 °C so far) and heat waves.
• Glacier melt, glacial lake outburst floods (GLOF), sea level rise.
• Erratic rainfall: floods, landslides and droughts.
• Lower crop yield, food and water scarcity.
• Spread of diseases like malaria and dengue.
• Loss of biodiversity and damage to infrastructure.

Feasible solutions for Least Developed Countries (LDCs)

LDCs emit little, so their priority is adaptation plus low-cost, co-beneficial mitigation that also supports development.

1. Renewable energy: develop hydropower, micro-hydro, solar home systems, improved cooking stoves and biogas instead of firewood and imported fuel.
2. Community forest management and REDD+: protect and expand forests, earn carbon finance.
3. Climate-smart agriculture: drought- and flood-tolerant seeds, crop diversification, organic farming, small irrigation and rainwater harvesting.
4. Disaster risk reduction: GLOF early warning, flood forecasting, safe building codes, landslide mapping.
5. Local adaptation plans: community-based adaptation (e.g. Nepal's NAPA 2010 and LAPA) that involve local people.
6. Water management: spring-shed protection, recharge ponds, efficient use.
7. Clean transport: electric vehicles and public transport using domestic hydropower.
8. Access to international support: Green Climate Fund, Adaptation Fund, LDC Fund, Loss and Damage Fund; technology transfer and capacity building under the UNFCCC and Paris Agreement.
9. Awareness and education: include climate change in school curricula and local planning.
10. Strong policy and institutions: integrate climate change into national plans and budgets (climate budget coding).

These solutions are feasible because they are cheap, use local resources and labour, and give direct benefits such as jobs, clean air and energy security, while reducing vulnerability.