Final answer:
Reforestation is a low-tech carbon sequestration technique that uses the natural process of photosynthesis in trees to absorb and store CO2. It is cost-effective and provides other environmental benefits, but it takes time and requires significant land.
Step-by-step explanation:
A "low-tech" carbon sequestration technique is reforestation, which involves planting new forests or replanting areas that have been deforested. Reforestation exploits the natural process of photosynthesis, where trees absorb carbon dioxide (CO2) from the atmosphere and store it as carbon in their biomass (trunks, branches, leaves, and roots) and the soil.
Advantages of Reforestation
- Cost-effective and readily implementable
- Provides additional benefits like biodiversity conservation and water regulation
- Enhances soil quality which benefits agriculture and cultivation
Disadvantages of Reforestation
- Slow process, as trees take time to reach maturity and sequester significant amounts of CO2
- Requires substantial land area, which may conflict with other land uses
- May be vulnerable to forest fires and diseases
This approach is considered low-tech as it does not require complex machinery or technologies. Instead, it focuses on enhancing and managing natural processes of carbon capture and offers a way to mitigate climate change by increasing carbon sinks.