Estimation of the gravelly layer's depth in upland soil using landsat TM data
1997
Hatanaka, T. (Hokkaido National Agricultural Experiment Station, Sapporo (Japan)) | Nishimune, A. | Fukuhara, M. | Nira, R.
Landsat Thematic Mapper (TM) data, collected in May 1984 and 1985, was used to estimate and map the gravelly layer's depth in upland soil. The values from the gravelly layer measured at 30 upland-soil locations in the study area (southern part of Tokachi district) were used for regression analysis with TM spectral data consisting of seven bands. It was found that band 2, band 4, band 5 and band 7 could be used effectively for estimating the gravelly layer's depth in upland soil; the respective correlation coefficient was higher in 1985 than that in 1984. This relationship was confirmed at 12 upland-soil locations in an area different (northern part of Tokachi) from the study area, where the correlation coefficient was 0.995 between estimated values and measured values
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