Classification of seasonal dynamics of soil moisture according to satellite data Sentinel-2, Jizzakh region, Uzbekistan

Fig. 11.
a) Types of agricultural coverage in July 2018. b) The result of the histogram in July 2018 
(Source: [Compiled by the authors]). 
Wheat sowing in the area begins in March. Thus, we can see that there is no water 
requirement in Figure 8a since this map is based on the April 5 Sentinel-2 image and the 
image shown here does not require water. This is because wheat is planted in the last 
decade of March. Figure 8b shows this month's histogram with maximum pixel points of -
11
E3S Web of Conferences 
386
, 01005 (2023)
GISCA 2022 and GI 2022
https://doi.org/10.1051/e3sconf/202338601005

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0.2 and -0.1. And in May 2018, which coincides with the growing season, which can be 
seen in Figure 9a. In this picture, you can tell that the farmland is coloured red. In Figure 
9b, similar pixel ratios from -0.6 to -0.16 may be seen, because a significant part of the 
growing season falls in May. June is the time to re-irrigate wheat, as the wheat is already 
harvested next month. In Figure 10a we can see that the MNDWI is averaging and in 
Figure 10b we see that it is and we can see a similar result in April which is after the 
growing season. In July, they harvest and prepare the land for a new crop. In Figure 11a it 
can be seen that the water demand in the region is very low as the harvest will be 
completed by the third decade of July and the bottom part of the wheat remains on the plot 
and this part can be used as winter feed for sheep and goats. Moreover, according to the 
Figure , the MNDWI of this area is normal, and the histogram in Figure 11b reveals the 
result. 
The results delineated a significant change in water surfaces over the considered time 
intervals. Their values on agricultural land varied significantly between April and August. 
The increase in the values of the water surface on them was associated with the irrigation of 
wheat fields. The predominance of land with MNDWI values below 0 in April corresponds 
to the time of land cultivation before its growth phase.