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Published online 23 May 2006
Published in Soil Sci Soc Am J 70:1110-1120 (2006)
DOI: 10.2136/sssaj2005.0264
© 2006 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Wavelet Spectra of Nitrous Oxide Emission from Hummocky Terrain during Spring Snowmelt

T. T. Yates*, B. C. Si, R. E. Farrell and D. J. Pennock

Dep. of Soil Science, Univ. of Saskatchewan, Agriculture Building, 51 Campus Dr., Saskatoon, SK, S7N 5A8 Canada


Figure 1
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  		Fig. 1. Relative elevation, soil N2O flux, and local wavelet spectrum for seeded-grass transect, 30 Mar. 2004. Convex (CX), concave (CV), cultivated wetland (CW), and uncultivated wetland (UW) landscape elements are indicated. Color bar is log of wavelet variance. Scales <55 m are not-significant according to a permutation test (p < 0.05).

 

Figure 2
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  		Fig. 2. Relative elevation, soil N2O flux, and local wavelet spectrum for seeded-grass transect, 4 Apr. 2004. Convex (CX), concave (CV), cultivated wetland (CW), and uncultivated wetland (UW) landscape elements are indicated. Color bar is log of wavelet variance. Scales <30 m and >65 m are not significant according to a permutation test (p < 0.05).

 

Figure 3
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  		Fig. 3. Relative elevation, soil N2O flux, and local wavelet spectrum for seeded-grass transect, 29 Apr. 2004. Convex (CX), concave (CV), cultivated wetland (CW), and uncultivated wetland (UW) landscape elements are indicated. Color bar is log of wavelet variance. Scales <30 m are not significant according to a permutation test (p < 0.05).

 

Figure 4
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  		Fig. 4. Relative elevation, soil N2O flux, and local wavelet spectrum for seeded-grass transect, 3 June 2004. Convex (CX), concave (CV), cultivated wetland (CW), and uncultivated wetland (UW) landscape elements are indicated. Color bar is log of wavelet variance. Scales <65 m are not significant according to a permutation test (p < 0.05).

 

Figure 5
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  		Fig. 5. Relative elevation, soil N2O flux, and local wavelet spectrum for seeded-grass transect, 23 June 2004. Convex (CX), concave (CV), cultivated wetland (CW), and uncultivated wetland (UW) landscape elements are indicated. Color bar is log of wavelet variance. All scales are not significant according to a permutation test (p < 0.05).

 




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