title: Temporal and Spatial Changes in Black Carbon Sedimentary Processes in Wetlands of Songnen Plain, Northeast of China.
abstract: Black carbon (BC), an important component of organic carbon (OC) produced from incomplete combustion of carbon compounds, is widespread and affects the global carbon storage. The objectives of this study were to analyze the BC contents and fluxes in the last 150 years to determine the causes of differences in the three profiles of the Songnen Plain of Northeast China and to estimate the BC storage in the wetlands of the Songnen Plain. In the three sampling sites, BC fluxes in the period between 1950 and the present time increased by the ratios of 1.3, 31.1 and 1.4, respectively, compared to their own baseline between 1850 and 1900. Furthermore, the BC fluxes varying from 0.76 to 5.63 g m-2 y-1 in the three profiles had an opposite trend with the sand percentages with mean values changing from 78.9% to 19.6%, suggesting that sand desertification might additionally affect the BC processes in the region.
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China; University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Jiabao
authors.initials: J
authors.lastname: He
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China; University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Chuanyu
authors.initials: C
authors.lastname: Gao
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China; Department of Oceanography and Coastal Sciences, School of the Coast & Environment, Louisiana State University, Baton Rouge, Louisiana, United States of America.
authors.forename: Qianxin
authors.initials: Q
authors.lastname: Lin
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China.
authors.forename: Shaoqing
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Smeal College, Penn State University, University Park, Pennsylvania, United States of America.
authors.forename: Winston
authors.initials: W
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China.
authors.forename: Xianguo
authors.initials: X
authors.lastname: Lu
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China.
authors.forename: Guoping
authors.initials: G
authors.lastname: Wang
mesh_terms: D000393:Air Pollutants / Q000032:analysis; D000538:Aluminum Silicates / Q000032:analysis; D002244:Carbon / Q000032:analysis*; D002681:China; D000077215:Clay; D003247:Conservation of Natural Resources; D004784:Environmental Monitoring / Q000379:methods*; D019015:Geologic Sediments / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D007854:Lead / Q000032:analysis; D052638:Particulate Matter / Q000032:analysis; D053260:Soot / Q000032:analysis*; D013997:Time Factors; D053833:Wetlands
chemical_list: D000393:Air Pollutants; D000538:Aluminum Silicates; D052638:Particulate Matter; D053260:Soot; D007854:Lead; D002244:Carbon; D000077215:Clay