Journal article
A comparison of soil properties observed in farmed, restored and natural closed depressions on the Des Moines Lobe of Iowa
Catena (Giessen), Vol.129, pp.39-45
06/01/2015
DOI: 10.1016/j.catena.2015.02.021
Abstract
Extensive artificial soil drainage systems, including subsurface tiles and surface ditches, have been installed throughout the agricultural Midwest to remove excess water from perennially wet soils. Factors of soil formation, such as soil climate and biota, have been substantially altered by artificial drainage and the associated land use change. Efforts to restore wetlands are ongoing but success has been limited in some cases. The objectives of this study were to 1) quantify alterations of wetland soils due to artificial drainage in the recently glaciated, Des Moines Lobe region of north-central Iowa; and 2) compare physical and chemical soil properties of farmed (artificially drained) wetlands to those undergoing restoration efforts and those considered natural (undrained). Wetlands in thirteen Des Moines Lobe closed depressions were sampled during this study representing three distinct populations: farmed, restored and natural soils. There were distinct visual differences in soil morphological properties between farmed and restored wetlands and farmed depressions had significantly higher soil nutrients (NO3, P and K). Fewer differences were noted between restored and natural wetlands, implying that restoration of wetlands was returning soils to a more natural state in a relatively short time (15-20 years) compared to the time since they were initially drained (50-100 years). Study results suggest soil alteration due to artificial drainage and provide important context for establishing realistic timeframes for wetland soil restoration in closed depressions located on the Des Moines Lobe. (C) 2015 Elsevier B.V. All rights reserved.
Details
- Title: Subtitle
- A comparison of soil properties observed in farmed, restored and natural closed depressions on the Des Moines Lobe of Iowa
- Creators
- Matthew T. Streeter - Univ Iowa, Iowa Geol Survey, Iowa City, IA 52242 USAKeith E. Schilling - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Catena (Giessen), Vol.129, pp.39-45
- Publisher
- Elsevier
- DOI
- 10.1016/j.catena.2015.02.021
- ISSN
- 0341-8162
- eISSN
- 1872-6887
- Number of pages
- 7
- Grant note
- CD 97723601 / US Environmental Protection Agency; United States Environmental Protection Agency
- Language
- English
- Date published
- 06/01/2015
- Academic Unit
- Earth and Environmental Sciences; IIHR--Hydroscience and Engineering
- Record Identifier
- 9984383277102771
Metrics
2 Record Views