Ecosystem carbon storage and sink/source of temperate forested wetlands in Xiaoxing’anling, northeast China

Autor: Na Li, Huicui Lu, Changcheng Mu, Li Ma, Biao Wang, Yan Zhang
Rok vydání: 2021
Předmět:
Zdroj: Journal of Forestry Research. 33:839-849
ISSN: 1993-0607
1007-662X
DOI: 10.1007/s11676-021-01366-0
Popis: Wetlands play an important role in the global carbon cycle, but there are still considerable uncertainties in the estimation of wetland carbon storage and a dispute on whether wetlands are carbon sources or carbon sinks. Xiaoxing’anling are one of several concentrated distribution areas of forested wetland in China, but the carbon storage and carbon sink/source of forested wetlands in this area is unclear. We measured the ecosystem carbon storage (vegetation and soil), annual net carbon sequestration of vegetation and annual carbon emissions of soil heterotrophic respiration of five typical forested wetland types (alder swamp, white birch swamp, larch swamp, larch fen, and larch bog) distributed along a moisture gradient in this area in order to reveal the spatial variations of their carbon storage and quantitatively evaluate their position as carbon sink or source according to the net carbon balance of the ecosystems. The results show that the larch fen had high carbon storage (448.8 t ha−1) (6.8% higher than the larch bog and 10.5–30.1% significantly higher than other three wetlands (P
Databáze: OpenAIRE
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