The spatial distribution patterns of nitrate nitrogen(NO-3—N) and ammonia nitrogen(NH+4—N) in typical Calamagrostis angustifolia wetland soils of Sanjiang Plain were studied by Geostatistics method.Results showed that the variability of NO-3—N and NH+4—N contents in different soil layers had significant difference,with the order of NO-3—N>NH+4—N,and the reasons were mainly correlated with the differences of their physical movement characteristics.Further analysis indicated that the differences of NO-3—N ...
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