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Long-term intensive agricultural development since the 1950s has converted approximately 3,800,000ha of natural wetlands (NWL) and 1,200,000ha of natural forestland (NFL) to cultivated land (CL) in the Sanjiang Plain of China. However, it is not clear how the large-scale land-use shifts impact the chemical forms of phosphorus in the soil profile. Eleven soil cores were collected from NWL, NFL, and...
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