Effects of hydrology on spatial patterns of soil development in created riparian wetlands

摘要: Surficial soil development was studied in four wetland basins created on the floodplain of Des Plaines River near Chicago, Illinois, USA. These studies determined changes spatial distribution plant-available nutrients as a result establishing two different hydrologic regimes. Three had mineral soils and one an organic soil. A geostatistical analysis including kriging collected data indicated that all parameters showed significant their structure water inputs unidirectional flows. The degree variability by autocorrelation (i.e., points closer to another are more similar than further apart due influence landscape processes) declined for except Mg+2. Temporal patterns extractable phosphorus (P) percent carbon (OC) tended be inverse; P areas where OC increased vice versa. pattern these dissimilar compared related primary productivity. Zones uptake accumulation were also hydrology Changes nutrients, particularly P, may viewed nutrient spirals within wetlands. By comparison, reorganization concentrations K+ Ca+2 appear have been mediated cation exchange processes. formation new concentration gradients strongly both flow pathways inflow rates. exchangeable cations not reflected average each basin. Mean values changed significantly only few instances. Reducing this way missed important biogeochemical occurring experimental basins.