| Autor: |
Miller JJ; Agriculture and Agri-Food Canada, Lethbridge, AB, Canada, T1J 4B1. jim.miller@agr.gc.ca, Chanasyk DS, Curtis T, Willms WD |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of environmental quality [J Environ Qual] 2010 Apr 13; Vol. 39 (3), pp. 991-1000. Date of Electronic Publication: 2010 Apr 13 (Print Publication: 2010). |
| DOI: |
10.2134/jeq2009.0233 |
| Abstrakt: |
Limited information exists on the effect of streambank fencing on riparian zone pastures. The objective of this study was to test the hypothesis that 4 to 6 yr of streambank fencing would improve the environmental quality of the cattle-excluded pasture compared with the grazed pasture and cause the fenced pasture to act as a buffer or filter strip. Rangeland health, vegetative and soil properties, and rainfall simulation runoff were measured in the cattle-excluded and adjacent grazed native pastures along the fenced reach of the Lower Little Bow River in southern Alberta, Canada, for 3 yr (2005-2007). Rangeland health was improved (health score increase from 55 to 72%); vegetation cover (13-21%) and standing litter (38-742%) were increased; and bare soil (72-93%) and soil bulk density (6-8%) were decreased under cattle exclusion, indicating an improvement in environmental quality from streambank fencing. In contrast, other vegetation (total and live basal area, fallen litter) and soil properties (soil water and soil C, N, and P) were not improved by cattle exclusion. Cattle exclusion significantly (P
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| Databáze: |
MEDLINE |
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