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Soil Net Nitrogen Mineralization in Salt Marshes with Different Flooding Periods in the Yellow River Delta, China
Seasonal variation of inorganic nitrogen and net nitrogen mineralization of soils were investigated by using in situ incubation method in three wetlands with different flooding periods (i.e., short‐term, seasonal, and tidal flooding) in the Yellow River Delta, China. Results showed that N mineralization in short‐term and seasonal flooding wetlands could be classified into one group. Inorganic nitrogen showed higher concentrations during the period from spring to early summer, and then it decreased after June for short‐term and seasonal flooding wetlands. Net N mineralization rate appeared negative value but sequently increased and reached the positive maximum value during the period from late autumn to early winter. However, in tidal flooding wetland, both inorganic N and N mineralization rate kept relative constant. The effects of inundation due to water and sediment regulation were different on three wetlands. Inorganic N contents in soil decreased in short‐term and seasonal flooding wetlands whereas increased in tidal flooding wetland. The changing tendency of net N mineralization rate was opposite to that of ammonium rate.
Soil Net Nitrogen Mineralization in Salt Marshes with Different Flooding Periods in the Yellow River Delta, China
Seasonal variation of inorganic nitrogen and net nitrogen mineralization of soils were investigated by using in situ incubation method in three wetlands with different flooding periods (i.e., short‐term, seasonal, and tidal flooding) in the Yellow River Delta, China. Results showed that N mineralization in short‐term and seasonal flooding wetlands could be classified into one group. Inorganic nitrogen showed higher concentrations during the period from spring to early summer, and then it decreased after June for short‐term and seasonal flooding wetlands. Net N mineralization rate appeared negative value but sequently increased and reached the positive maximum value during the period from late autumn to early winter. However, in tidal flooding wetland, both inorganic N and N mineralization rate kept relative constant. The effects of inundation due to water and sediment regulation were different on three wetlands. Inorganic N contents in soil decreased in short‐term and seasonal flooding wetlands whereas increased in tidal flooding wetland. The changing tendency of net N mineralization rate was opposite to that of ammonium rate.
Soil Net Nitrogen Mineralization in Salt Marshes with Different Flooding Periods in the Yellow River Delta, China
Gao, Haifeng (author) / Bai, Junhong (author) / Xiao, Rong (author) / Yan, Denghua (author) / Huang, Laibin (author) / Huang, Chen (author)
CLEAN – Soil, Air, Water ; 40 ; 1111-1117
2012-10-01
7 pages
Article (Journal)
Electronic Resource
English
Nitrogen Mitigates Salt Stress and Promotes Wheat Growth in the Yellow River Delta, China
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