The Prospect of Ocean Negative Carbon Emission Technologies on the Ecological Improvement

Abstract

Carbon dioxide anthropogenic emission have led to global warming, triggering a series of negative environmental effects such as extreme weather, rising sea level, seawater acidification and so on. Ocean is the largest active carbon pool on the planet, with huge potential for carbon dioxide removal. To address the climate crisis, technologies of ocean negative carbon emission have been presented, for the purpose of increasing ocean carbon sinks by anthropogenic processes. The current frameworks of the ocean negative carbon emission technologies can be categorized into coastal blue carbon, aquaculture carbon sink and ecological engineering approaches for negative carbon emission. While increasing oceanic carbon sink, the ocean negative carbon emission technologies are able to increase diversity and habitat complexity of marine organisms, to enhance stability of marine ecosystems, and to promote materials recycling, achieving the functions of ecological improvement. Those technologies will help marine ecosystem cope with global changes such as changing ocean circulation, acidification and deoxygenation, as well as local anthropogenic pollution.

Keywords

• ocean negative carbon emission
• marine ecological improvement
• global climate change
• earth ecological engineering