Spatially Explicit Estimation of Clay and Organic Carbon Content in Agricultural Soils Using Multi-Annual Imaging Spectroscopy Data

Table 3

Area free of vegetation in the HyMap images from 2004, 2005, and 2008 given in absolute values and percentage of the total image coverage.

Time of acquisition	Total number of image pixels	Image pixels with NDVI<0.2 and −2.5<CAI<−1.0	Proportion of image pixels with NDVI<0.2 and −2.5<CAI<−1.0; (%)
09.08.2004	12.076.995	266.019	2.20
27.05.2005	12.495.804	1.026.187	8.21
29.07.2008	16.125.125	208.374	1.29