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- Title
Anthropogenic Effects on Fluxes of Ecosystem Respiration and Methane in the Yellow River Estuary, China.
- Authors
Song, Hongli; Liu, Xingtu
- Abstract
To evaluate the influence of human activities on ecosystem respiration (CO) and CH fluxes and determine the seasonal and spatial variations, we measured CO and CH fluxes at four sampling sites (west side of the seawall, WSS; oilfield, OF; Spartina alterniflora coastal marsh, SCM; aquaculture pond, ACP) in the Yellow River estuary from June to December in 2013. Both CO and CH fluxes showed seasonal and spatial variations in the Yellow River estuary. The average CO fluxes from WSS, OF, SCM and ACP were 125.36, 111.03, 241.97 and −39.49 mg CO m h, while CH fluxes were −0.0110, −0.0165, 0.2012 and 0.0034 mg CH m h, respectively. Spatial variations of CO and CH fluxes were mainly affected by vegetation and soil moisture. There were significant relationships between both CO fluxes in WSS and SCM and CH flux in SCM with temperature. CO and CH fluxes were mainly affected by the interactions of thermal conditions and other abiotic factors in OF and ACP. Human activities have great effect on greenhouse gas emission, especially in the area where exotic-species S. alterniflora invaded. The construction of seawall blocked sea water transporting into the study area leading to low soil moisture which accelerated CO emission. Aquaculture ponds act as an emission of CH and consumption of CO.
- Subjects
YELLOW River Estuary (China); ECOSYSTEM dynamics; ANTHROPOGENIC effects on nature; METHANE &; the environment; SEASONAL temperature variations
- Publication
Wetlands, 2016, Vol 36, p113
- ISSN
0277-5212
- Publication type
Article
- DOI
10.1007/s13157-014-0587-1