Measuring the quality of digital soil maps using information criteria

被引:36
作者
Bishop, TFA [1 ]
McBratney, AB [1 ]
Whelan, BM [1 ]
机构
[1] Univ Sydney, Dept Agr Chem & Soil Sci, Sydney, NSW 2006, Australia
关键词
digital soil map; spatial variation; Shannon's information criterion;
D O I
10.1016/S0016-7061(01)00071-4
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
One of the purposes of a soil map is to present information regarding the spatial variation of soil to the end user. In the past, statistical methods of uncertainty have been used to indicate map quality. In this paper, the information content of a map is proposed as a more suitable measure of map quality. The theory has its basis in information theory, more particularly Shannon's information criterion. A modification of Shannon's information criterion is presented. Other than being used as an indicator of map quality, the method is particularly useful as an aid during the map production process, for example, choosing block size or and spacing. Four examples illustrate the concept and its potential use in soil science. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:95 / 111
页数:17
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