Stream bank erosion as a source of sediment and phosphorus in grazed pastures of the Rathbun Lake Watershed in southern Iowa, United States
Yükleniyor...
Dosyalar
Tarih
2012
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Soil Water Conservation Soc.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Livestock grazing of riparian areas can have a major impact on stream banks and stream integrity if improperly managed. The goals of this study were to determine the sediment and phosphorus (P) losses from stream bank soils under varying cattle stocking rates and to identify additional factors that impact stream bank erosion in the southern Iowa Drift Plain. The research was conducted on 13 cooperating beef cow-calf farms within the Rathbun Lake Watershed in south central Iowa. Over three years, stream bank erosion rates were estimated by using an erosion pin method. Eroded stream bank lengths and area, soil bulk density, and total P (TP) content in stream bank soil were measured to calculate soil and TP losses via stream bank erosion. The length of severely eroded stream banks and soil compaction of the riparian areas of the pastures were positively related to stocking rates. There was no direct relationship between bank erosion and stocking rate. These results suggest that use of riparian areas as pasture can negatively impact the integrity of the major source areas and that the impact could be reduced through management of livestock stocking densities within these riparian areas.
Açıklama
Anahtar Kelimeler
Livestock grazing, Riparian pasture, Stream bank erosion, Water pollution
Kaynak
Journal of Soil Water Conservation
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
67
Sayı
6
Künye
Tufekçioğlu, M., Isenhart, T. M., Schultz, R. C., Bear, D. A., Kovar, J. L., & Russell, J. R. (2012). Stream bank erosion as a source of sediment and phosphorus in grazed pastures of the Rathbun Lake Watershed in southern Iowa, United States. Journal of Soil and Water Conservation, 67(6), 545-555.
