Effect of different factors dominated by water level environment on wetland carbon emissions

Yao, Xiaochen; Song, Changchun

doi:10.1007/s11356-022-20289-9

Cited by 5 publications

(2 citation statements)

References 95 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The other linked to the gas transport in and out of the soil and gas diffusion rates as well [26]. The correlation between elevated CH 4 -C at higher water table levels was proved by previous studies in freshwater ecosystems [27,28] and saline soils [29,30]. A microcosm simulation study in a freshwater marsh showed that a higher water table condition (+2 to +14 cm) emits 75% more CH 4 than at low water table (−11 to 0 cm) [31].…”

Section: Effects Of Soil Moisture On Ch4-cmentioning

confidence: 78%

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

Sha

Wang

et al. 2023

Sustainability

View full text Add to dashboard Cite

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.

show abstract

Section: Effects Of Soil Moisture On Ch4-cmentioning

confidence: 78%

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

Sha

Wang

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

“…A large number of studies have been carried out on the topic of carbon emission reduction in a sponge city. Most studies focused on carbon emissions of one kind of sponge facility, such as permeable pavement [10], green roofs [11], wetlands [12], etc. Flynn et al [13] conducted carbon emission accounting and carbon sink benefit evaluation for green infrastructure.…”

Section: Introductionmentioning

confidence: 99%

Carbon Accounting and Carbon Emission Reduction Potential Analysis of Sponge Cities Based on Life Cycle Assessment

Zhao,

Liu,

Xie

et al. 2023

Water

View full text Add to dashboard Cite

In recent years, China has been vigorously carrying out the construction and development of a sponge city. To prove that the material and energy consumption involved in the implementation of a sponge city is much less than that of the integrated urban drainage system (IUDS) in addition to saved energy and reduced carbon in the sponge city, it was important to calculate the corresponding carbon source and sink and analyze its key influence factors. The emission factor method was used to calculate carbon emissions. In view of this, based on the Intergovernmental Panel on Climate Change (IPCC) guidelines and life cycle assessment (LCA), this research established a systematic accounting method for carbon emissions from the IUDS and the sponge city, which focused on improving the calculation method of the carbon sink stage. A case study was conducted in Beijing, China, and the carbon emission reduction effect of the construction of the sponge city was discussed. The results showed that the carbon emission reduction potential (CRP) of sponge facilities in this project for 50 years was 612.45 tons of CO2 equivalent after the renovation. Compared with IUDS, sponge city construction had a positive effect on carbon emission reduction and reduced carbon emissions by 87.08% on average. For the IUDS and the sponge city, the stormwater pipe network had the largest contribution of carbon emission, and its material, transportation, pipeline laying, and maintenance of stormwater pipe networks had important influences. Morris global analysis method was used to analyze the sensitivity of LCA results and obtained that the influence degree of sensitivity factors on carbon emissions in the life cycle was in the order of annual rainfall > carbon sequestration rate of green space > high-density polyethylene (HDPE) > transport distance > fertilization and insecticide. This study can provide a positive contribution to the construction of a sponge city and planning the low-carbon development of the city in the future in China.

show abstract