Salinity Properties Retrieval from Sentinel-2 Satellite Data and Machine Learning Algorithms

Mzid, Nada; Boussadia, Olfa; Albrizio, Rossella; Braham, Mohamed; Todorović, Mladen

doi:10.3390/agronomy13030716

Cited by 8 publications

(2 citation statements)

References 92 publications

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“…This shows that RF and DT are more powerful in modeling highly nonlinear dimensional relationships than XGBoost and SVR. Our findings concur with those found in 95 , 96 . Merembayev et al 97 indicated that DT and RF have almost the same performance for soil salinity estimation, which is aligned with our findings.…”

Section: Discussionsupporting

confidence: 93%

A longitudinal analysis of soil salinity changes using remotely sensed imageries

Bandak,

Movahedi-Naeini,

Mehri

et al. 2024

Sci Rep

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Soil salinization threatens agricultural productivity, leading to desertification and land degradation. Given the challenges of conducting labor-intensive and expensive field studies and laboratory analyses on a large scale, recent efforts have focused on leveraging remote sensing techniques to study soil salinity. This study assesses the importance of soil salinity indices’ derived from remotely sensed imagery. Indices derived from Landsat 8 (L8) and Sentinel 2 (S2) imagery are used in Random Forest (RF), eXtreme Gradient Boosting (XGBoost), Decision Tree (DT), and Support Vector Machine (SVR) are associated with the electrical (EC) conductivity of 280 soil samples across 24,000 hectares in Northeast Iran. The results indicated that the DT is the best-performing method (RMSE = 12.25, MAE = 2.15, R2 = 0.85 using L8 data and RMSE = 10.9, MAE = 2.12, and R2 = 0.86 using S2 data). Also, the results showed that Multi-resolution Valley Bottom Flatness (MrVBF), moisture index, Topographic Wetness Index (TWI), and Topographic Position Indicator (TPI) are the most important salinity indices. Subsequently, a time series analysis indicated a reduction in salinity and sodium levels in regions with installed drainage networks, underscoring the effectiveness of the drainage system. These findings can assist decision-making about land use and conservation efforts, particularly in regions with high soil salinity.

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Section: Discussionsupporting

confidence: 93%

A longitudinal analysis of soil salinity changes using remotely sensed imageries

Bandak,

Movahedi-Naeini,

Mehri

et al. 2024

Sci Rep

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“…It interferes with numerous physiological, biochemical, and molecular processes [ 1 ]. The use of low-quality water (brackish water, reclaimed water, drainage), often with high salinity levels, is becoming increasingly important in order to overcome water scarcity and to meet the growing demand for water for agricultural development [ 2 , 3 , 4 , 5 ]. Olives, one of the most important tree crops in the Mediterranean, are often exposed to high salinity levels in the root zone, especially during long, hot, and dry summers [ 2 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Physiological Responses of Two Olive Cultivars to Salt Stress

Boussadia¹,

Zgallai

Mzid

et al. 2023

Plants

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The olive tree (Olea europaea L.) is the main fruit tree in most of the arid and semi-arid regions of Tunisia, which is where the problem of salinity is more pronounced. Salinity is one of the main factors that affects the productivity of olive trees, so the objective of this experiment was to study the effects of salinity on the photosynthesis, water relations, mineral status, and enzymatic activity of two cultivars of Olea europaea L., ‘Chemlali’ and ‘Koroneiki’. The trial was conducted under controlled conditions in a greenhouse for a period of 49 days and included two treatments: T0 control and T100 (irrigation with 100 mM of NaCl solution). Under salinity stress, the photosynthesis, stomatal conductance, and leaves of both cultivars were negatively affected. ‘Chemlali’ showed greater tolerance to NaCl salinity, based on a progressive decrease in osmotic potential (Ψπ) followed by a progressive and synchronous decrease in gs, without a comparable decrease in photosynthesis. The water use efficiency (WUE) improved as a result. In addition, the K+/Na+ ratio in ‘Chemlali’ rose. This appears to be crucial for managing stress. Conversely, enzymatic activity showed an accumulation of glutathione peroxidase (GPX) in stressed plants. The catalase (CAT) and ascorbate peroxidase (APX) content decreased in both stressed varieties. It can be concluded that the cultivar ‘Koroneiki’ is more susceptible to salt stress than the cultivar ‘Chemlali’, because the accumulation of GPX and the decreases in CAT and APX were more pronounced in this cultivar.

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Effect of different deficit irrigation regimes on vine performance, grape composition and wine quality of the “Primitivo” variety under mediterranean conditions

Losciale,

Conti,

Seripierri

et al. 2024

Irrig Sci

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Climate change represents one of the current major challenges and the improper use of water resources is an impeding threat. Agricultural research can play a crucial role by developing innovative strategies and techniques to reduce water use without affecting crop productivity and quality, particularly in grapevine growing in Mediterranean areas, as both productivity and wine quality are quintessential for the economic and ecologic sustainability of this crop. The present study aimed to define a deficit irrigation strategy for the “Primitivo” grapevine cultivar, taking into account the overall pathway of the vineyard performance in terms of leaf functionality, starch reserves, vine productivity, and wine quality. The trial was carried out in Southern-Italy on a three year-old, drip irrigated vineyard, imposing four deficit irrigation regimes for two consecutive seasons, consisting of 29 (T29), 55 (T55), 85 (T85) and 100% (T100) of crop evapotranspiration (ETC). Mild water restriction (T85) did not affect vegetative nor reproductive vine performance. Deficit irrigation at 55% ETC lowered leaf functionality, starch accumulation, vine vigour and yield, due to a reduction of cluster weight; however, wine acidity and phenolic compounds were increased. T29 further decreased yield, as also the number of clusters was reduced. The most water-stressed treatment revealed a low concentration of malic acid in the must and a consequent increase of the ethanol sensation in the wine. After 9 months ageing, T85 had the highest wine colour intensity suggesting this treatment as the most promising in terms of quality and quantity of wine as well as for water saving.

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Salinity Properties Retrieval from Sentinel-2 Satellite Data and Machine Learning Algorithms

Cited by 8 publications

References 92 publications

A longitudinal analysis of soil salinity changes using remotely sensed imageries

A longitudinal analysis of soil salinity changes using remotely sensed imageries

Physiological Responses of Two Olive Cultivars to Salt Stress

Effect of different deficit irrigation regimes on vine performance, grape composition and wine quality of the “Primitivo” variety under mediterranean conditions

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