Environmental Monitoring and Assessment

, Volume 185, Issue 7, pp 5861-5871

First online:

Effects of wetland recovery on soil labile carbon and nitrogen in the Sanjiang Plain

  • Jingyu HuangAffiliated withMinistry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai UniversityCollege of Environment, Hohai University Email author 
  • , Changchun SongAffiliated withNortheast Institute of Geography and Agricultural Ecology, Chinese Academic Sciences
  • , Philip Nti NkrumahAffiliated withMinistry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


Soil management significantly affects the soil labile organic factors. Understanding carbon and nitrogen dynamics is extremely helpful in conducting research on active carbon and nitrogen components for different kinds of soil management. In this paper, we examined the changes in microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), dissolved organic carbon (DOC), and dissolved organic nitrogen (DON) to assess the effect and mechanisms of land types, organic input, soil respiration, microbial species, and vegetation recovery under Deyeuxia angustifolia freshwater marshes (DAMs) and recovered freshwater marsh (RFM) in the Sanjiang Plain, Northeast China. Identifying the relationship among the dynamics of labile carbon, nitrogen, and soil qualification mechanism using different land management practices is therefore important. Cultivation and land use affect intensely the DOC, DON, MBC, and MBN in the soil. After DAM soil tillage, the DOC, DON, MBC, and MBN at the surface of the agricultural soil layer declined significantly. In contrast, their recovery was significant in the RFM surface soil. A long time was needed for the concentration of cultivated soil total organic carbon and total nitrogen to be restored to the wetland level. The labile carbon and nitrogen fractions can reach a level similar to that of the wetland within a short time. Typical wetland ecosystem signs, such as vegetation, microbes, and animals, can be recovered by soil labile carbon and nitrogen fraction restoration. In this paper, the D. angustifolia biomass attained natural wetland level after 8 years, indicating that wetland soil labile fractions can support wetland eco-function in a short period of time (4 to 8 years) for reconstructed wetland under suitable environmental conditions.


Microbial biomass carbon Microbial biomass nitrogen Dissolved organic carbon Dissolved organic nitrogen Sanjiang Plain Wetland recovery