Estimation of Carbon Sequestration Potential of various Tree Species under Miyawaki Planting Method at Veterinary College Campus, Orathanadu, Thanjavur, Tamil Nadu

Author: D. Senthilkumar and A. Bharathidhasan

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Abstract

The escalating levels of greenhouse gases (GHGs) in the atmosphere, particularly carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), are widely acknowledged as the primary forces behind global warming and climate change. This has resulted in a global surface temperature increase of 1.07°C from the period 1850-1900 to 2010-2019, with global net anthropogenic GHG emissions reaching an estimated 59 ± 6.6 GtCO2-eq in 2019. These shifts are evident in changing precipitation patterns, rising sea levels, and the heightened frequency and severity of extreme weather events, posing significant threats to ecosystems worldwide. In response to these challenges, tree planting and afforestation initiatives are vital strategies for reducing atmospheric GHG concentrations. This study investigates the Miyawaki method of afforestation, an innovative technique developed by Japanese botanist Akira Miyawaki, which allows for the creation of dense, biodiverse forests in compact areas. This method is gaining attention for its potential in rapid ecological restoration and increased carbon sequestration. However, comprehensive data on carbon pools in both above-ground and below-ground biomass, as well as soil carbon in young eco-forests established using the Miyawaki method, remain scarce. This research aimed to estimate the carbon stock in biomass and soil carbon sequestration, thereby enhancing predictions of the climate impacts and carbon cycling dynamics of Miyawaki-planted eco-forests at the Veterinary College Campus in Orathanadu, Thanjavur, Tamil Nadu. A diverse selection of 16 plant species, including both fruit-bearing trees and ornamental plants, was introduced to the area. This selection comprised a variety of herbs, shrubs, and trees, with a total of 1,600 saplings planted. Trees significantly increase their carbon capture capacity from the first to the second year of growth. In the initial year, trees sequester between 0.02 and 0.15 kg of carbon per tree due to their small size and developing root system. By the second year, this capacity increases to 0.15-0.70 kg per tree. The findings highlight significant carbon sequestration potential across various tree species, emphasizing the Miyawaki method as a crucial tool for ecological enhancement and climate change mitigation

Keywords

Miyawaki, Dense plantation, carbon sequestration, stem girth

Conclusion

Miyawaki forests offer more than just an increase in green spaces; each tree within these forests can absorb between 0.15 to 0.70 kg of carbon, showing a notable improvement from their first year of growth. These forests are crucial in alleviating urban heat islands, improving air quality, and diminishing noise pollution in cities. By the end of the second year, the total potential for carbon sequestration, expressed in CO2 equivalent, varies from 63 kg to over 1695 kg, depending on the number and types of trees planted. This impressive ability to capture carbon makes Miyawaki forests a powerful nature-based solution for combating climate change. Beyond carbon absorption, Miyawaki forests provide numerous ecosystem services in urban areas. Their dense structure and variety of species enhance habitat availability for local plants and animals, potentially acting as ecological corridors in fragmented landscapes. The rapid growth rates typical of Miyawaki forests further boost these advantages, offering swift and effective improvements to urban ecosystems. Ongoing research continues to explore the long-term ecological effects and scalability of this approach. Miyawaki forests may increasingly play a role in sustainable urban planning and ecosystem restoration strategies, presenting a comprehensive approach to tackling environmental challenges in urban settings

References

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How to cite this article

D. Senthilkumar and A. Bharathidhasan (2024). Estimation of Carbon Sequestration Potential of various Tree Species under Miyawaki Planting Method at Veterinary College Campus, Orathanadu, Thanjavur, Tamil Nadu. Biological Forum – An International Journal, 16(11): 163-167