EMPLOYING ELEVATION DATA FOR EFFICIENT MAPPING OF SOIL POLLUTION ON FLOODPLAINS

被引:37
作者
LEENAERS, H
OKX, JP
BURROUGH, PA
机构
[1] Department of Geography, University of Utrecht, Utrecht, 3508 TC
[2] Deventer, 7400 AL
关键词
D O I
10.1111/j.1475-2743.1990.tb00818.x
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
Abstract The co‐regionalization between relative elevation and zinc concentration was used to map zinc concentration in the soil of the Geul floodplain in the southern Netherlands by co‐kriging from 154 observations. Point co‐kriging and point kriging for estimating zinc content in the soil were compared in terms of kriging variances. Another 45 samples were used to compare the precision of the estimated values in terms of squared and absolute estimation errors. Point co‐kriging produced better estimates of zinc concentration than either simple point kriging or linear regression from the relative elevation data alone. Moreover, the estimation variances for co‐kriging are substantially smaller than those for kriging. The results suggest that knowledge of geomorphological processes can often improve the quality of interpolation maps of properties that are expensive to measure. Copyright © 1990, Wiley Blackwell. All rights reserved
引用
收藏
页码:105 / 114
页数:10
相关论文
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