Spatial and Seasonal Variations of Soil Carbon and Nitrogen Content and Stock in a Tidal Salt Marsh with Tamarix chinensis, China

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• 作者：Qingqing Zhao ; Junhong Bai ; Qiang Liu ; Qiongqiong Lu ; Zhaoqin Gao ; Junjing Wang
• 关键词：Carbon ; Nitrogen ; C/N ratio ; Spatial and temporal variation ; Tidal salt marsh
• 刊名：Wetlands
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：36
• 期：1-supp
• 页码：145-152
• 全文大小：737 KB
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• 作者单位：Qingqing Zhao (1)
  Junhong Bai (1)
  Qiang Liu (1)
  Qiongqiong Lu (1)
  Zhaoqin Gao (1)
  Junjing Wang (1)
  
  1. State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing, 100875, China
  
• 刊物主题：Freshwater & Marine Ecology; Environmental Management; Ecology; Hydrogeology; Coastal Sciences; Landscape Ecology;
• 出版者：Springer Netherlands
• ISSN：1943-6246

文摘

To investigate the spatial and seasonal variations of soil organic carbon (SOC) and total nitrogen (TN) contents and stocks in tidal salt marsh soils, 15 cores to a depth of 40 cm were collected in five sampling sites along a sampling belt during three seasons. Our results showed that higher SOC and TN contents occurred in the surface soils in three sampling seasons. Spatial distributions of SOC and TN showed moderate variability. The C/N ratios were higher in the summer and autumn than in spring. The soil organic carbon density (SOCD) and soil total nitrogen density (TND) ranked in the following order: autumn > spring > summer. And the SOCD values positively correlated with the distances from the tidal creek in summer, while this correlation was negative in autumn and spring. The soil properties, such as the soil moisture, salinity, C/N ratio and C/P ratio, significantly correlated with the SOC and TN contents and stocks. The water and salinity regulation and the alternation of ratios of ecological stoichiometry should be considered to strengthen carbon and nitrogen sequestration in coastal wetlands.