Why Coastal Wetland Restoration is Significant? CBCGDF Wetland Working Group Attended the Coastal Wetland Restoration: Exploring Carbon Sequestration and Accounting” Webinar
2023/7/4 13:25:00 本站

On June 30, the Wetland Working Group of China Biodiversity Conservation and Green Development Foundation (CBCDGF) participated in the “Coastal Wetland Restoration: Exploring Carbon Sequestration and Accounting” webinar, organized by Future Earth Coasts in partnership with the Institution of Environmental Sciences, as “Turning the Tide: Part of the Systems Thinking for Sustainable Oceans” project, which has been recognized as part of the United Nations Ocean Decade series of activities.

Coastal wetland restoration plays a key role in combating climate change and protecting biodiversity. During this webinar, the CBCDGF Wetlands Working Group had the opportunity to hear from two experts: Prof. Chen Xuechu, a professor from East China Normal University, China, and Dr. James Sippo, a researcher from Southern Cross University, Australia. They conducted case studies of coastal swamps in Shanghai and mangrove ecosystems in Australia, respectively, with a particular focus on ongoing carbon sequestration and carbon accounting methods.

Prof. Chen Xuechu delivered a keynote report on the topic of “Coastal Wetland Restoration and Carbon Sequestration: A Case Study on the Chinese Coast”.

Professor Chen introduced that coastal wetlands provide diverse habitats for various coastal organisms and play multiple functions of the ecosystem. And now wetlands are under serious threat. Since 1970, 35 % of the world’s wetland habitats have quietly disappeared, largely due to human activities. He said the restored and carefully managed wetlands along China’s coast are a much bigger carbon sink than the natural swamps nearby. His team found that the restoration of wetlands is essential for both maintaining biodiversity and combating climate change. His team measured the fluxes of three powerful greenhouse gases - carbon dioxide, methane and nitrous oxide - in two coastal marshes in Beihang Bay, Shanghai. One of the marshes was relatively intact and undamaged; Another marsh was restored by planting native vegetation and controlling water flow. The team found that the restored wetlands were able to absorb more carbon dioxide and emit far less methane than natural wetlands. As a result, restored wetlands have a greater net effect of carbon sequestration than natural swamps. And the restored coastal wetlands connect the surrounding wetlands, and its good ecological connectivity provides birds with a variety of foraging and nesting habitats, which can attract more water birds to roosting and breeding. At the same time, after the restoration of wetland, its good natural environment provides more green space for people to carry out nature education. In his view, the ecological restoration of wetlands is a cumulative process, and in the long run, it is of great value and significance. He called for similar restoration of degraded wetlands to store carbon and restore wildlife habitats.

Dr. James Sippo gave a keynote report on “Blue Carbon Cycling and the Australian Blue Carbon Method”.

Dr. James Sippo explored the carbon cycling in mangrove ecosystems in detail and discussed the main pathways included and excluded in the current blue carbon accounting paradigm. In 2022, the Australian government released a Carbon Credit approach that provides Australian Carbon Credit Units (ACCU) for the restoration of blue carbon ecosystems. Dr. James Sippo explained the development of the method and how the carbon credits for blue carbon recovery are calculated in this method. He also identified the possibility of improving the method in future iterations and discussed the applicability of the method to regions outside of Australia.

Original Chinese Article:
Checked by Samantha
Editor: YJ
Contact: v10@cbcgdf.org; +8617319454776


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