Distribution Characteristics of Soil Nitrogen in Typical Depressional Wetlands of Sanjiang Plain
The soil nitrogen distribution characteristics in the typical depressional wetland and their impact factors were analyzed. The results showed that the distribution regularity of TN and NH4+-N contents in the depressional wetland soil were the same, which decreased with the rise of water level and simultaneously decreased with the increase of soil depth. The NO3--N content in 0 - 20 cm soil of Deyeuxia angustifolia marsh wetland decreased obviously for the soil leaching of water level fluctuation. And NO3--N contents in the surface soil of permanently flooded wetland were higher than those of in the lower soil layer. The contents and distributions of TN, NH4+-N and NO3--N in the depressional wetland soil influenced by multiple factors, such as soil organic matters, water condition and biomass distribution characteristics.
NETL
NSTL
万方数据
维普
