Methane emission from wetlands in Taiwan

Chang, Tsu-Hua

doi:10.1016/s1352-2310(03)00588-0

Cited by 48 publications

(25 citation statements)

References 26 publications

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“…Natural wetlands are thought to be one of the largest natural sources, contributing 20 % of the global annual flux of CH 4 to the atmosphere (Bachelet and Neue 1993). CH 4 production and emission in wetlands involve complex physiological processes of plants and microorganism, which are regulated by climatic and environmental factors (Ding et al 2004;Chang and Yang 2003). Therefore, considerable uncertainties exist in estimates of CH 4 emissions levels and fluxes from natural wetland at regional scale.…”

Section: Introductionmentioning

confidence: 99%

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Spatial variations in methane emissions from natural wetlands in China

Zhang

Jiang

2013

Int. J. Environ. Sci. Technol.

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Natural wetlands are thought to be one of the largest natural sources of atmospheric methane concentrations. Although numerous studies referred to the rate of methane fluxes in different geophysical regions, only a few had estimates of the overall geographical methane emissions in China. This study estimated the spatial variations of annual methane emissions with the pixel size of 1 km 9 1 km from natural wetlands, excluding water surface, in China. The natural wetland areas were extracted from the database of the 2000 land covers, and geophysical divisions were used to represent different climate conditions. Methane emission in every geophysical region was calculated based on methane release factors obtained from an extensive overview of published literature and the data of elevation and vegetation proportion. The estimated annual methane emissions ranged from 0 to 5,702.8 kg per pixel within the area of 1 km 2 , and the spatial variation in methane emissions was strongly correlated with proportion of wetlands in the area. The total methane emission from natural wetland in China ranged from 3.48 to 7.16 Tg (terrogram, unit of weight) per year, with the mean value of 4.94 Tg per year, based on the area 133,000 km 2 of natural wetlands. Specifically, the wetland in Northeast China had the highest contribution in China (39 %). Inner Mongolia and Qinghai-Tibet highland represented for about 25 and 21 %, respectively. The other 15 % of the measured methane was released in Northwest, North, Central, and South China.

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Section: Introductionmentioning

confidence: 99%

“…Yangtze and Min River Estuary, Taihu, Taiwan, and Hainan attracted much attention (Lu et al 1999;Chang and Yang 2003;Wang et al 2009a;Tong et al 2010). These studies showed that CH 4 emissions from herbaceous swamps were much higher than those from mangroves, and the emission rates from beaches were greatly influenced by tidal stages.…”

Section: Introductionmentioning

confidence: 99%

Spatial variations in methane emissions from natural wetlands in China

Zhang

Jiang

2013

Int. J. Environ. Sci. Technol.

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“…There are complex relationships between soil pH and gas fluxes. While some studies have found low soil pH to decrease methane production by inhibiting methanogensis (Dunfield et al, 1993;Valentine et al, 1994), others have found no relationships between pH and CH 4 production (Bubier et al, 1993;Chang and Yang, 2003). Low pH can inhibit nitrification, an important source of N 2 O, but can also increase the N 2 O yield during denitrification (Robertson and Groffman, 2007).…”

Section: Introductionmentioning

confidence: 99%

Influence of plant communities and soil properties on trace gas fluxes in riparian northern hardwood forests

Hopfensperger

Gault

Groffman

2009

Forest Ecology and Management

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“…Apart from this, CH 4 is generated in hydrothermal vents (e.g., Chen et al 2005) and is released from sediments mainly through fermentation in an anoxic environment (Martens and Klump 1980;Kipphut and Martens 1982;Ivanov et al 1991;Tsurushima et al 1996;Marty et al 2001;Amouroux et al 2002;Chang and Yang 2003;Halbach et al 2004;Kankaala and Bergström 2004). The South China Sea's (SCS) standing as the largest marginal sea in the world ( 3.5 × 10 6 km 2 ) notwithstanding, not until very recently has CH 4 been systematically studied there, and then only for bottom water and sediments Yang et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Abnormally High CH4 Concentrations in Seawater at Mid-Depths on the Continental Slopes of the Northern South China Sea

Chen¹,

Tseng²

2006

Terr. Atmos. Ocean. Sci.

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ABSTRACT1 Institute of Marine Geology and Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan, ROC * Corresponding author address: Prof. Chen-Tung Arthur Chen, Institute of Marine Geology and Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan, ROC; E-mail: ctchen@mail.nsysu. edu.twFor the first time, CH 4 concentrations in the water column were measured during three cruises in the northern South China Sea. The abnormally high subsurface CH 4 concentrations that were found on the continental slopes may have been released from sediments and/or may have originated in CH 4 gas hydrates.

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Methane emission from wetlands in Taiwan

Cited by 48 publications

References 26 publications

Spatial variations in methane emissions from natural wetlands in China

Spatial variations in methane emissions from natural wetlands in China

Influence of plant communities and soil properties on trace gas fluxes in riparian northern hardwood forests

Abnormally High CH4 Concentrations in Seawater at Mid-Depths on the Continental Slopes of the Northern South China Sea

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