SPATIAL VARIABILITY IN SOIL-MOISTURE AS PREDICTED FROM AIRBORNE THEMATIC MAPPER (ATM) DATA

被引：15

作者：

DAVIDSON, DA

WATSON, AI

机构：

[1] Department of Environmental Science, University of Stirling, Stirling

来源：

EARTH SURFACE PROCESSES AND LANDFORMS | 1995年 / 20卷 / 03期

关键词：

SOIL MOISTURE VARIABILITY; REMOTE SENSING; VARIOGRAMS; PALAEOCHANNELS;

D O I：

10.1002/esp.3290200304

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

In the first part of this project, the extent to which moisture content of alluvial soils could be predicted from imagery derived from an airborne thematic mapper (ATM) was investigated. From sampling done on the same day as the flight, it was found that digital numbers derived from the thermal channel (waveband 11) were strongly correlated with gravimetric moisture content. From sampling three fields of contrasting land cover, the relationship between waveband 11 values and moisture content was found to be independent of land cover type. Spatial variation in waveband 11 values and thus moisture content were related to palaeochannel patterns on the alluvial land. This was investigated by deriving variograms for long transects from each of the three investigated fields. The range and sills of the variograms are shown to express the nature and pattern of palaeochannels. By the application of such geostatistical techniques, high resolution imagery can thus be used to quantify palaeochannel characteristics on alluvial land.

引用

页码：219 / 230

页数：12

共 23 条

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