The influence of organic matter on soil color using the regression equations of optical parameters in the system CIE- L*a*b*

Holocene Moisture Variability and Its Lagged Response to Summer Insolation Revealed by Eolian Deposits in the Lake Qinghai Basin, NE Tibetan Plateau

“…These findings are consistent with previously published research (Gunal et al, 2008;T. Liu, 1985;Vodyanitskii & Savichev, 2017). Based on the above analysis, we suggest that L* is mainly controlled by TOC content in the eolian sand-paleosol sequence in this study, which indirectly indicates change in effective moisture levels in LQB.…”

“…Previous studies have shown that L* in sediments depends mainly on the TOC and CaCO 3 content (Q. Wang et al., 2016; Yang & Ding, 2003). In the arid and semi‐arid monsoon marginal zone, several studies have shown that L* for eolian sediments is mainly controlled by the TOC content, and is largely independent of the carbonate content (Gunal et al., 2008; T. Liu, 1985; Vodyanitskii & Savichev, 2017). In our three sections, the minimum L* value occurs in the sandy paleosol unit, while the average values for the sandy loess and the eolian sand units is relatively high (Figure 4).…”

Machine learning methods for soil moisture prediction in vineyards using digital images

“…It is obvious that better prediction results are obtained when the regression models are trained with data of individual soil types. Since soil colour may be also affected by the soil physical, biological and chemical properties [20][21], it would be wise to include some soil properties in addition to colour data to train the prediction model especially if soils of different types are involved.…”

Applications of artificial neural networks in three agro-environmental systems: microalgae production, nutritional characterization of soils and meteorological variables management

“…In the same manner, there is a nonproportionality relationship between the dark soil and the OM, for instance, when the humus content exceeds 6%, the soil color varies only slightly in comparison with soil color variation under this OM threshold (Valeeva et al, 2016). The organic substance present in Fe-coated particles also neutralizes its effect on the soil color (Vodyanitskii and Savichev, 2017).…”

“…Iron oxides show both redness and yellowness (Vodyanitskii and Kirillova, 2016), other properties such as clay and humus contents also is related with the redness of the soil (Hu et al, 2014). The Munsell color system is one of the most widespread among soil scientists (Vodyanitskii and Savichev, 2017). In the Munsell System, the color is described by three factors such as hue, value and chroma.…”