Dynamics of water, carbon and nitrogen in an agricultural used Chernozem soil in Central Germany

摘要

The paper describes a data set from the experimental site at Bad Lauchstadt intended to be used by models for soil and plant dynamics. The data set includes the 100-year-old history of four treatments of one field of the well-known "Static Experiment"as well as more detailed information about crop development and soil moisture dynamics for a 4-year crop rotation from 1999 to 2002 that is identical with the crop rotation of the long-term experiment and a black fallow treatment, intended to provide basic data about soil moisture dynamics and nitrogen leaching without plant impact. Soil physical parameters sampled at four soil profiles, all of the same soil unit give an idea about the heterogeneity of the loess soil at this site. Climate data and especially their transformation to turnover conditions give strong indications for the impact of climate change on soil organic matter (SOM). Nitrogen deposition amounts to 47.3 kg/ha/year as an average value for the crop rotation of sugar beet, spring barley, potatoes and winter wheat. Soil water samples from ceramic suction cups show only very low concentrations of nitrogen below the root zone indicating that there is nearly no loss of the available nitrogen due to leaching.