A coherent geostatistical approach for combining choropleth map and field data in the spatial interpolation of soil properties.
A coherent geostatistical approach for combining choropleth map and field data in the spatial interpolation of soil properties.
复制标题
在土壤特性的空间插值中结合脉络膜图和现场数据的连贯的地统计方法。
DOI:
10.1111/j.1365-2389.2011.01368.x
复制
发表时间:
2011-06
影响因子:
4.2
通讯作者:
Goovaerts P
中科院分区:
文献类型:
--
作者:
Goovaerts P
Information available for mapping continuous soil attributes often includes point field data and choropleth maps (e.g. soil or geological maps) that model the spatial distribution of soil attributes as the juxtaposition of polygons (areas) with constant values. This paper presents two approaches to incorporate both point and areal data in the spatial interpolation of continuous soil attributes. In the first instance, area-to-point kriging is used to map the variability within soil units while ensuring the coherence of the prediction so that the average of disaggregated estimates is equal to the original areal datum. The resulting estimates are then used as local means in residual kriging. The second approach proceeds in one step and capitalizes on: 1) a general formulation of kriging that allows the combination of both point and areal data through the use of area-to-area, area-to-point, and point-to-point covariances in the kriging system, 2) the availability of GIS to discretize polygons of irregular shape and size, and 3) knowledge of the point-support variogram model that can be inferred directly from point measurements, thereby eliminating the need for deconvolution procedures. The two approaches are illustrated using the geological map and heavy metal concentrations recorded in the topsoil of the Swiss Jura. Sensitivity analysis indicates that the new procedures improve prediction over ordinary kriging and traditional residual kriging based on the assumption that the local mean is constant within each mapping unit.
登录
查看更多内容
影响因子:
4.4
作者:
Pardo-Iguzquiza, Eulogio;Atkinson, Peter M.;Chica-Olmo, Mario
通讯作者:
Chica-Olmo, Mario
影响因子:
8.9
作者:
ATTEIA, O;DUBOIS, JP;WEBSTER, R
通讯作者:
WEBSTER, R
影响因子:
3.6
作者:
Kyriakidis, PC
通讯作者:
Kyriakidis, PC
影响因子:
2.9
作者:
Liu, Ten-Lin;Juang, Kai-Wei;Lee, Dar-Yuan
通讯作者:
Lee, Dar-Yuan
DOI:
10.1111/j.1365-2389.1980.tb02084.x
发表时间:
1980-01-01
期刊:
JOURNAL OF SOIL SCIENCE
影响因子:
--
作者:
BURGESS, TM;WEBSTER, R
通讯作者:
WEBSTER, R