Impact of Land Use on Soluble Organic Nitrogen in Soil

摘要: Although it has been hypothesized that soluble organic nitrogen (SON) plays a central role in regulating productivity some terrestrial ecosystems, the factors controlling size of SON pool soil remain poorly understood. Therefore our principal aim this work was to assess impact seven different land use systems (rough and managed grassland, deciduous coniferous woodland, heathland, wetland tilled land) on inorganic N (NO−3, NH+4) pools surface layer (0–15 cm). After extraction with deionised water, we found most cases water extractable (WEON) similar pool. In contrast, KCl (KClEON) constituted dominant form soils under all uses, perhaps indicating significant amounts were held exchange phase. contrast N, which varied significantly use, KClEON WEON for uses exception land, where lower observed. We conclude constitutes an important broad range its microbial assimilation, plant nutrition ecosystem responses atmospheric deposition warrants further attention.