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- W3196367803 endingPage "126892" @default.
- W3196367803 startingPage "126892" @default.
- W3196367803 abstract "• Carbon dioxide emission source was observed in a forest wetland catchment during rainy season. • NEE variation was influenced by hydrologic DOC and DON exports from surrounding land uses. • Wetland might play an important role in local positive NEE during rainy season. Forest wetland catchments are widely distributed in middle-high latitude and their hydrological and biogeochemical processes are sensitive to climate change. The net ecosystem exchange (NEE), meteorological forcing, and hydrological data in the Shuidong forest wetland catchment (SFWC) were continuously measured by eddy covariance (EC) tower and water monitoring instruments from 2019 to 2020. During rainy season, large carbon dioxide emission was detected with mean NEE value of 1.85 g C m −2 d -1 from local footprint area. Significant positive correlation was observed between daily NEE and air temperature (T air ), relative humidity (RH). We further found that the NEE was mainly controlled by ecosystem respiration (RE) instead of gross primary production (GPP), which might be caused by local high Q 10 value. In addition, dissolved organic carbon (DOC) and dissolved organic (DON) concentrations near the stream outlet also had significant positive relationship with NEE, indicating the hydrological transport from upland forests may trigger the soil priming effect and result in higher CO 2 emission within the local footprint area. Soil CO 2 flux measurements from different land uses suggested that wetland may be the primary CO 2 emission source during rainy season. Under the Representative Concentration Pathway (RCP) 8.5 scenario, the CO 2 emission hotspot was expected to occur in this forest wetland catchment due to more frequent rainfall events predicted in this region." @default.
- W3196367803 created "2021-09-13" @default.
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- W3196367803 date "2021-11-01" @default.
- W3196367803 modified "2023-10-01" @default.
- W3196367803 title "Rainfall stimulates large carbon dioxide emission during growing season in a forest wetland catchment" @default.
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- W3196367803 doi "https://doi.org/10.1016/j.jhydrol.2021.126892" @default.
- W3196367803 hasPublicationYear "2021" @default.
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