Regulation of Methane Emissions in a Constructed Wetland by Water Table Changes

Sha, Chenyan; Wang, Qiang; Wu, Jian; Hu, Wenan; Shen, Cheng; Zhang, Beier; Wang, Min

doi:10.3390/su15021536

Open AccessArticle

Regulation of Methane Emissions in a Constructed Wetland by Water Table Changes

by

Chenyan Sha

^1,†,

Qiang Wang

^2,†,

Jian Wu

¹,

Wenan Hu

²,

Cheng Shen

¹,

Beier Zhang

³ and

Min Wang

^1,*

¹

Shanghai Academy of Environmental Sciences, Shanghai 200233, China

²

School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China

³

College of Environmental Science and Engineering, Donghua University, Shanghai 200051, China

^*

Author to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Sustainability 2023, 15(2), 1536; https://doi.org/10.3390/su15021536

Submission received: 2 December 2022 / Revised: 6 January 2023 / Accepted: 8 January 2023 / Published: 13 January 2023

(This article belongs to the Special Issue Wetlands: Conservation, Management, Restoration and Policy)

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Abstract

Riparian wetlands release greenhouse gases and sequestration carbon as well, so their carbon source and carbon sink functions have become some of the key research issues of global climate change. In this present paper, the main controllable factors of the self-designed and constructed riparian wetland, namely hydrological conditions and additional carbon sources, were artificially regulated, and then methane fluxes were measured. The results proved that the methane emissions were significantly positively correlated with the water level heights, and the methane emissions increased exponentially with the rise of water level when the water level was between −20 cm and +20 cm. According to the −20~0 cm water level, a small number of methane emissions was significantly different from the 10 cm and 20 cm water levels, which indicated that higher water level could significantly promote methane emission. When the water level reached above 0 cm, the methane emission gradually increased as the flooding time became longer; it reached the peak value after more than 20 days of flooding after which it decreased, which provided a scientific basis for optimal design and effective management of restored and constructed riparian wetlands, minimizing the methane emissions of riparian wetlands.

Keywords: methane emissions; restored and constructed riparian wetland; hydrology; management

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MDPI and ACS Style

Sha, C.; Wang, Q.; Wu, J.; Hu, W.; Shen, C.; Zhang, B.; Wang, M. Regulation of Methane Emissions in a Constructed Wetland by Water Table Changes. Sustainability 2023, 15, 1536. https://doi.org/10.3390/su15021536

AMA Style

Sha C, Wang Q, Wu J, Hu W, Shen C, Zhang B, Wang M. Regulation of Methane Emissions in a Constructed Wetland by Water Table Changes. Sustainability. 2023; 15(2):1536. https://doi.org/10.3390/su15021536

Chicago/Turabian Style

Sha, Chenyan, Qiang Wang, Jian Wu, Wenan Hu, Cheng Shen, Beier Zhang, and Min Wang. 2023. "Regulation of Methane Emissions in a Constructed Wetland by Water Table Changes" Sustainability 15, no. 2: 1536. https://doi.org/10.3390/su15021536

APA Style

Sha, C., Wang, Q., Wu, J., Hu, W., Shen, C., Zhang, B., & Wang, M. (2023). Regulation of Methane Emissions in a Constructed Wetland by Water Table Changes. Sustainability, 15(2), 1536. https://doi.org/10.3390/su15021536

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Regulation of Methane Emissions in a Constructed Wetland by Water Table Changes

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