Monitoring the dynamics of irrigated parcels and impacts on phreatic water quality in the Mostaganem Plateau (northwestern Algeria): an integrated analysis using remote sensing and field data for 2010 and 2020
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.Algeria
Area Of Science
- Environmental Science
- Agricultural Science
- Remote Sensing
Background
- Algeria's agricultural policies since the early 2000s have expanded irrigated areas, impacting national food security.
- Increased irrigation raises concerns regarding groundwater sustainability in agricultural regions.
- The Mostaganem Plateau is an area of intense agricultural activity with significant irrigated land.
Purpose Of The Study
- To examine the impact of changes in irrigated parcels (IPs) on groundwater quality between 2010 and 2020.
- To map irrigated parcels and track their changes using remote sensing data.
- To assess groundwater quality parameters, including nitrate concentrations and salinity.
Main Methods
- Utilized Landsat satellite data and spectral indices (SAVI, NDVI, NDWI, MSI, CIG) to map irrigated parcels.
- Employed a Soil-Adjusted Vegetation Index (SAVI) threshold of 0.38 to quantify changes in irrigated land.
- Validated results using a support vector machine (SVM) machine learning algorithm with 98% accuracy.
Main Results
- A net increase of 690 hectares in irrigated parcels was detected between 2010 and 2020.
- Groundwater quality showed increased nitrate concentrations (up to 50 mg/L).
- Groundwater salinity significantly decreased from 3650 to 1265, attributed to sustainable practices and improved rainfall (SPI).
Conclusions
- Integrating remote sensing and field data is crucial for monitoring agricultural expansion.
- Sustainable agricultural practices and favorable rainfall conditions have positively impacted groundwater quality.
- The study provides valuable insights for sustainable groundwater management in semi-arid regions.
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
Related Concept Videos
In concrete preparation, the quality of water is paramount as it affects the strength and durability of the concrete. Potable water is usually preferred; however, it must not have excessive sodium or potassium to prevent compromising the concrete's integrity. Water quality is typically evaluated based on impurities such as dissolved solids, chlorides, and sulfates, and its pH value is ideally between 6 and 8. Even slightly acidic natural water may be acceptable unless it contains harmful...
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
Under normal conditions, water taken up by the plant evaporates from leaves and other parts in a process called transpiration. In times of drought stress, water that evaporates by transpiration far exceeds the water absorbed from the soil, causing plants to wilt. The general plant response to drought stress is the synthesis of hormone...