plotKML (version 0.2-4)

eberg: Ebergotzen --- soil mapping case study

Description

Eberg�tzen{Ebergoetzen} is 10 by 10 km study area in the vicinity of the city of G�ttingen{Goettingen} in Central Germany. This area has been extensively surveyed over the years, mainly for the purposes of developing operational digital soil mapping techniques (Gehrt and B�hner{Boehner}, 2001), and has been used by the SAGA GIS development team to demonstrate various processing steps. eberg table contains 3670 observations (augers) of soil textures at five depths (0-10, 10-30, 30-50, 50-70, and 70-90), and field records of soil types according to the German soil classification system. eberg_grid contains gridded maps at 100 m resolution that can be used as covariates for spatial prediction of soil variables. eberg_grid25 contains grids at finer resolution (25 m). eberg_zones is a polygon map showing the distribution of parent material (Silt and sand, Sandy material, Clayey derivats, Clay and loess). eberg_contours shows contour lines derived from the 25 m DEM of the area using 10 m equidistance.

Usage

data(eberg)

encoding

latin1

References

• Ad-hoc-AG Boden, (2005) Bodenkundliche Kartieranleitung. 5th Ed, Bundesanstalt fur Geowissenschaften und Rohstoffe undNieders�chsisches{Niedersaechsisches} Landesamtf�r{fur} Bodenforshung, Hannover, p. 423.
• B�hner{Boehner}, J., McCloy, K. R. and Strobl, J. (Eds), (2006)http://saga-gis.org/en/about/references.html{SAGA --- Analysis and Modelling Applications}.G�ttinger{Goettinger} Geographische Abhandlungen, Heft 115. Verlag Erich Goltze GmbH,G�ttingen{Goettingen}, 117 pp.
• Gehrt, E.,B�hner{Boehner}, J., (2001) Vom punkt zur flache --- probleme des `upscaling' in der bodenkartierung. In: Diskussionsforum Bodenwissenschaften: Vom Bohrstock zum Bildschirm. FH,Osnabr�ck{Osnabruck}, pp. 17-34.
• Skaggs, T. H., Arya, L. M., Shouse, P. J., Mohanty, B. P., (2001)https://www.soils.org/publications/sssaj/articles/65/4/1038{Estimating Particle-Size Distribution from Limited Soil Texture Data}. Soil Science Society of America Journal 65 (4): 1038-1044.
• http://geomorphometry.org/content/ebergotzen

Examples

data(eberg)
data(eberg_grid)
data(eberg_zones)
data(eberg_contours)
coordinates(eberg) <- ~X+Y
proj4string(eberg) <- CRS("+init=epsg:31467")
gridded(eberg_grid) <- ~x+y
proj4string(eberg_grid) <- CRS("+init=epsg:31467")
# visualize the maps:
data(SAGA_pal)
l.sp <- list("sp.lines", eberg_contours, col="black")
spplot(eberg_grid["DEMSRT6"], col.regions = SAGA_pal[[1]], sp.layout=l.sp)
spplot(eberg_zones, sp.layout=list("sp.points", eberg, col="black", pch="+"))