DOI: 10.1007/s10533-016-0194-8
Scopus记录号: 2-s2.0-84958768484
论文题名: Modeling total particulate organic carbon (POC) flows in the Baltic Sea catchment
作者: Strååt K.D. ; Mörth C.-M. ; Sobek A. ; Smedberg E. ; Undeman E.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2016
卷: 128, 期: 2018-01-02 起始页码: 51
结束页码: 65
语种: 英语
英文关键词: Drainage basin
; Large-scale model
; Litter
; Organic carbon
; Primary production
; Soil erosion
Scopus关键词: catchment
; concentration (composition)
; drainage basin
; freshwater input
; GIS
; hydrological modeling
; litter
; particulate organic carbon
; primary production
; river discharge
; seasonality
; soil erosion
; topography
; total organic carbon
; Atlantic Ocean
; Baltic Sea
英文摘要: The largest input source of carbon to the Baltic Sea catchment is river discharge. A tool for modeling riverine particulate organic carbon (POC) loads on a catchment scale is currently lacking. The present study describes a novel dynamic model for simulating flows of POC in all major rivers draining the Baltic Sea catchment. The processes governing POC input and transport in rivers described in the model are soil erosion, in-stream primary production and litter input. The Baltic Sea drainage basin is divided into 82 sub-basins, each comprising several land classes (e.g. forest, cultivated land, urban areas) and parameterized using GIS data on soil characteristics and topography. Driving forces are temperature, precipitation, and total phosphorous concentrations. The model evaluation shows that the model can predict annual average POC concentrations within a factor of about 2, but generally fails to capture the timing of monthly peak loads. The total annual POC load to the Baltic Sea is estimated to be 0.34 Tg POC, which constitutes circa 7–10 % of the annual total organic carbon (TOC) load. The current lack of field measurements of POC in rivers hampers more accurate predictions of seasonality in POC loads to the Baltic Sea. This study, however, identifies important knowledge gaps and provides a starting point for further explorations of large scale POC mass flows. © 2016, Springer International Publishing Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83395
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden; Department of Geological Sciences, Stockholm University, Stockholm, Sweden; Baltic Sea Centre, Stockholm University, Stockholm, Sweden
Recommended Citation:
Strååt K.D.,Mörth C.-M.,Sobek A.,et al. Modeling total particulate organic carbon (POC) flows in the Baltic Sea catchment[J]. Biogeochemistry,2016-01-01,128(2018-01-02)