+ Site Statistics
References:
52,654,530
Abstracts:
29,560,856
PMIDs:
28,072,755
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn

+ Translate
+ Recently Requested

How soil map units and delineations change with survey intensity and map scale



How soil map units and delineations change with survey intensity and map scale



Canadian Journal of Soil Science 61(4): 535-552



It is becoming common for soil surveys to be made of the same area at different intensities and published at different scales. The principles of cartographic generalization are discussed that control the relationships between the map units and delineations on maps made from such a survey. A study of 2 sets of maps showed that almost no lines were coincident. Up to 20% of the small scale delineations could be inliers of different soils, and .apprx. 15% of the large scale delineations would be outside their small scale equivalents. The same discrepancies are to be expected between large scale soil maps and the smaller scale maps of physiography or vegetation that are often used to stratify soils. Reasons for these discrepancies are discussed under the headings of simplification and classification. Recommendations are made to guide the preparation of maps and legends for different intensities and scales of survey in the same area. These recommendations have practical implications for the planning of surveys and the designs of computer-based autocartography systems.

(PDF emailed within 0-6 h: $19.90)

Accession: 000903505

Download citation: RISBibTeXText

DOI: 10.4141/cjss81-063



Related references

Spatial variation of some chemical and physical properties within single contiguous delineations of two soil sampling units of a salt-affected soil. International Journal of Tropical Agriculture 1(2): 131-138, 1983

Spatial variation of sand content and ph within single contiguous delineations of 2 soil mapping units. Soil Science Society of America Journal 42(3): 460-464, 1978

Integrating soil map delineations properties and land use into soil carbon density assessment at regional scale Emilia Romagna, Italy. Geophysical Research Abstracts 11, 2009

Assessing and mapping topsoil organic carbon stock at regional scale: A scorpan kriging approach conditional on soil map delineations and land use. Land Degradation & Development 21(6): 565-581, 2010

Improved low intensity soil survey map unit design using large-scale vertical aerial photographs. Soil survey horizonser 23(2): 22-27, 1982

Reconnaissance for soil survey. 1. Pre-survey estimates of the density of soil boundaries necessary to produce pure mapping units. Journal of Soil Science 26(2): 144-154, 1975

Driving forces behind the stagnancy of Chinas energy-related CO2 emissions from 1996 to 1999: the relative importance of structural change, intensity change and scale change. Energy Policy 33(3): 319-335, 2005

A comparison of change in the 0-10 numeric rating scale to a pain relief scale and global medication performance scale in a short-term clinical trial of breakthrough pain intensity. Anesthesiology 112(6): 1464-1472, 2010

Soil-landscapes, taxonomic units and soil profiles. A personal perspective on some unresolved problems of soil survey. Soil Survey and Land Evaluation 4(1): 1-7, 1984

Experimental study on the effectiveness of protective sheets designed to prevent soil erosion caused by rainfall: A case step change of rainfall intensity through the use of a large scale rainfall simulator. Bulletin of the Faculty of Agriculture Yamaguchi University 0(40): 67-76, 1992

Probabilistic evaluations of intensity (scale units) of earthquakes on seismic zoning map of Caucasus. Physics of the Solid Earth: , Pages 750-756. 1992., 1992

Utility of soil landscape units to the national cooperative soil survey. Pages 65-72 1989, 1989

On three types of soil delineations on the soil maps. Pochvovedenie 0(3): 359-369, 1998

Pilot sampling trial for soil properties and ground water levels for the Soil Map of the Netherlands, scale 1 : 50 000. Map units with groundwater level III. Report Winand Staring Centre for Integrated Land, Soil and Water Research ( 483.1): 52 pp., 1997

Specifications for soil survey intensity survey order in canada. Canadian Journal of Soil Science 65(3): 543-554, 1985