R. Hadria

Institute of Agronomic Research

Climate change is expected to have a profound impact on the growth and distribution of plant species, particularly in Mediterranean regions. In this study, we investigate the suitable habitat and geographical distribution of Ceratonia siliqua L. (Leguminosae), an exceptional Mediterranean tree, in Morocco. Our hypothesis suggests a reduction in sui...

The objective of this study was to use SAR (sensitivity of Synthetic Aperture Radar) data to detect the supply of irrigation water during the anthesis and grain-filling phenological stages of wheat in the irrigated Tadla perimeter of Morocco. Backscattering coefficients were derived from four ERS-1 (European Remote-Sensing Satellite-1) images acqui...

The olive tree (Olea europaea L.) is culturally and economically vital in Morocco. However, its sustainability is threatened by aridity and water scarcity. Studying its response to different irrigation strategies is crucial for sustainable cultivation and improved water use efficiency in the face of future drought events. This work aimed to study t...

In this chapter, a per-pixel trend analysis approach and the temporal variance of drought risk were used to compare the seasonal dynamics of the multivariate risk level of agricultural drought in two hydrological systems (Tensift and Moulouya watersheds in Morocco). The multivariate risk level is calculated from the time series of the enhanced comp...

The agricultural sector in Morocco faces drought challenges due to limited water resources, necessitating the development of irrigation strategies targeted at increasing water production. In this regard, the olive sector can adopt deficit irrigation strategies, to achieve sustainable management practices that improve water productivity and save wat...

Climate change is expected to alter many natural ecosystems around the world, by affecting plants growth and distribution. This is particularly emphasized for several Mediterranean plant species and communities. In this study, we investigate the suitable habitat and geographical distribution of a remarkable Mediterranean tree, Ceratonia siliqua L....

Agriculture in the Mediterranean region is substantially challenged by climate change, and olive growers in particular are facing difficulties because of its effects. In this regard, the olive sector can adopt deficit irrigation strategies, to achieve sustainable management practices that improve water productivity and save irrigation water. This c...

Agricultural drought is a complex phenomenon with numerous consequences and negative implications for agriculture and food systems. The Sahel is frequently affected by severe droughts, leading to significant losses in agricultural yields. Consequently, assessing vulnerability to agricultural drought is essential for strengthening early warning syst...

The olive tree is an iconic tree in the Mediterranean region, traditionally cultivated under rainfed conditions; however, olive cultivars are also found outside the Mediterranean region and are widely used for oil and olive production. However, with the increasing aridity and global changes, olive agroecosystems are facing sustainability challenges...

This manuscript aims to develop a new multivariate composite index for monitoring agricultural drought. To achieve this, the AVHRR, VIIRS, CHIRPS data series over a period of 40 years, rainfall and crop yield data as references were used. Variables include parameters for vegetative stress (SVCI, PV, SMN), water stress (PCI, RDI, NRDI), and heat str...

A substantial number of off-grid olive oil mills in Morocco are powered by diesel-fired generators, which hugely contribute to air pollution and greenhouse gas emissions. In this research work, a biomass gasification combined heat and power (CHP) plant fueled with local by-products was explored as a renewable alternative to electrify off-grid olive...

The ever-increasing global population presents a looming threat to food production. To meet growing food demands while minimizing negative impacts on water and soil, agricultural practices must be altered. To make informed decisions, decision-makers require timely, accurate, and efficient crop maps. Remote sensing-based crop mapping faces numerous...

Climate change is expected to greatly alter and modify all life forms on Earth. Therefore, maintaining natural and agroecosystems sustainability is one of the major scientific concerns in the current era. Reducing greenhouse gas (GHG) emissions represents an urgent need to mitigate the effects and consequences of climate change. The present chapter...

Remote sensing-based crop mapping has continued to grow in economic importance over the last two decades. Given the ever-increasing rate of population growth and the implications of multiplying global food production, the necessity for timely, accurate, and reliable agricultural data is of the utmost importance. When it comes to ensuring high accur...

This document has been produced by the project communication team. for more information , visit the link: https://www.reffect-africa.eu/#/

La cartographie quantitative des impacts cumulés ou retardés des aléas climatiques comme les épisodes des sécheresses sévères est essentielle pour améliorer la gestion de cet aléa climatique. Dans la littérature, au sujet de la cartographie quantitative des paramètres de la sécheresse, plus de 150 indices ont été proposés et testés dans plusieurs r...

This article reviews the main recent applications of multi-sensor remote sensing and Artificial Intelligence techniques in multivariate modelling of agricultural drought. The study focused mainly on three fundamental aspects, namely descriptive modelling, predictive modelling, and spatial modelling of expected risks and vulnerability to drought. Th...

Several drought indices are commonly used to quantify the severity and magnitude of agricultural drought. A comprehensive assessment of temporal and spatial convergences is important. This study evaluates the spatio-temporal concordances of eight drought indices, between October and April, over the period 2003 to 2021 under the semi-arid conditions...

Les agrosystèmes des milieux arides et semi arides sahéliens constituen t la principale source d’approvisionnement alimentaire et de subsistance de 80% de la population. Cependant, depuis les années 1980 ces agrosystèmes font face à une dynamique environnementale complexe, très contrastée et irréversible par endroit Les aléas climatiques extrêmes c...

This chapter highlights time series image processing for accurate agriculture characterization through two Moroccan experiences. The first case aims at crop mapping. A new classification approach based on multiple classifiers combination (MCC) was developed and applied to multi-temporal enhanced vegetation index (EVI) bands. The whole process is pe...

The agricultural sector plays a major role in the socio-economic development of several countries around the world, including African countries. Advances induced by digital innovation have positively impacted this sector and could have a considerable impact by reducing the risk of food insecurity. In this chapter, applied research experiences condu...

Water is essential for ensuring food security in the world, and agriculture is by far the largest consumer of the earth's available freshwater. Food demand and world's population are expected to increase over the next years. However, climate change will continue to affect water resources and make the problem of food security more complex. Therefore...

The monitoring of fodder production in arid and semi-extensively rangelands of Morocco is an essential component of livestock management. An accurate estimate of rangeland phytomass information is required for supplementary feeding leading to sustainable use of rangeland resources. The objective of this study is to test several vegetation indices r...

In Morocco, it is a challenge to mitigate the socio-economic and environmental impacts of soil erosion by improving management and planning decisions. The country is economically dependent on agriculture, which contributes around 20% of gross domestic product. Agriculture is subject to many constraints such as irregular rainfall and drought periods...

In arid and semi-arid countries, drought monitoring is a difficult issue to deal with, mainly due to the low density of precipitation measurement stations. The present study aims to evaluate the ability of the Tropical Rainfall Monitoring Mission (TRMM) 3B42 (v7) to monitor annual precipitation in Morocco. The accuracy of TRMM data to estimate annu...

In many Mediterranean countries, climate change issues, namely the scarcity of water resources, are essential for overcoming the obstacles to sustainable food production. In Morocco, cereal growing is a strategic sector that contributes significantly to food security. In order to improve socio-economic conditions in rural areas, the purpose of this...

The enhancement of water efficiency requires controlling the high demand for irrigated agriculture which depends on improving the capabilities to accurately simulate the water cycle and its components. Among these, evapotranspiration is widely studied to estimate reference evapotranspiration (ET 0) but the performance and accuracy of the estimates...

This paper aims to offer an improved version of the new composite drought monitoring index (CDMI) and to test its applicability in the context of Tensift watershed in Morocco. A synergistic approach incorporating the remote sensing techniques, hydrometeorological data, simulated data and agricultural statistics was used for this purpose. After asse...

This study aims to provide accurate information about changes in agricultural systems (AS) using phenological metrics derived from the NDVI time series. Use of such information could help land managers optimize land use choices and monitor the status of agricultural lands, under a variety of environmental and socioeconomic conditions. For this purp...

This study consists in identifying the optimal amount of irrigation water to ensure better productivity of Berkane clementine by using deficit irrigation method. Three degrees of irrigation restriction, compared to a control one, were studied. The amount of irrigation water used in the control treatment is estimated from the historical average refe...

Cette étude consiste à identifier la quantité d’eau d’irrigation optimale pour assurer une meilleure productivité du clémentinier de Berkane en utilisant la méthode d’irrigation déficitaire continue. Trois doses d’irrigation réduites par rapport à un témoin ont été étudiées. Dans le cas du témoin, la quantité d'eau d’irrigation utilisée est estimée...

This study consists in identifying the optimal amount of irrigation water to ensure better productivity of Berkane clementine by using deficit irrigation method. Three degrees of irrigation restriction, compared to a control one, were studied. The amount of irrigation water used in the control treatment is estimated from the historical average refe...

Since the dawn of civilization, the Western Mediterranean region has been a unique path for encounters and exchanges. The stability of the general conditions prevailing in its surrounding was crucial to ensure this vital link between north and south and east and west. However, any imbalance would be the precursor of a harmful domino effect to these...

The soils of the Mediterranean regions, characterized by summer aridity and the strong presence of limestone rocks, are dominated by the presence of calcium or even limestone. The soils of the Triffa plain, located in the north-eastern part of Morocco, is a perfect example of the Mediterranean soils. This plain represents one of the most fertile ag...

In this study, the potential of phenological indicators derived from Sentinel-2A (S2) time series were evaluated to explore the key variables that allow identifying both cropland and crop types. Based on the derived S2 phenological metrics and fitted vegetation indices (VI), ten feature sets were developed and assessed to discriminate different cro...

Despite the importance of wheat production, it does not fully meet the population's needs and the wheat producers denounce reduced margins. Considering its impact on the socio-economic conditions in rural areas, risk of losses in wheat production value has been analyzed at the level of 34 provinces, representing 70% of the total wheat cropping area...

Abstract: In order to improve socio-economic conditions in rural areas, the purpose of this study is to develop models for estimating wheat yield based on the use of agricultural inputs. The emphasis is not only on increasing production, but on economically efficient production that optimises productive resources. Thereby, a cost efficiency analysi...

In order to improve socio-economic conditions in rural areas, the purpose of this study is to develop models for estimating wheat yield based on the use of agricultural inputs. The emphasis is not only on increasing production, but on economically efficient production that optimises productive resources. Thereby, a cost efficiency analysis for whea...

Changes in crop yields may have important implications for food security in Morocco. This study intends to develop an explicit model based solely on phenological parameters derived from Moderate-Resolution Imaging Spectroradiometer (MODIS)/NDVI data to monitor wheat grain yield. The developed model allows overcoming missing weather, soil and irriga...

Air temperature is an important meteorological variable in many fields of our life. However, the availability of air temperature measurements over large geographic areas is often limited by the weather stations spatial distribution inadequacy, their low density and difficulties of data quality and collection. In this context, this study consists to...

The use of remote sensing data provides valuable information to ensure sustainable land cover management. In this paper, the potential of phenological metrics data, derived from Sentinel-2A (S2) and Landsat 8 (L8) NDVI time series, was evaluated using Random Forest (RF) classification to identify and map various crop classes over two irrigated peri...

Le site Chakhar est classé en 2008 comme Site d’Intérêt Biologique et Ecologique (SIBE), afin d’assurer sa protection et la mise en valeur de ce patrimoine naturel. Néanmoins, aucune étude d’évaluation de cette aire protégée n’a été effectuée durant cette dernière décennie. Cette étude vise la valorisation de ce site et la mise en exergue de ses co...

The monitoring of fodder production in arid and semi-extensively rangelands of Morocco is an essential component of livestock management. An accurate estimate of rangeland phytomass information is required for supplementary feeding leading to sustainable use of rangeland resources. The objective of this study is to test several vegetation indices r...

The monitoring of fodder production in arid and semi-extensively rangelands of Morocco is an essential component of livestock management. An accurate estimate of rangeland phytomass information is required for supplementary feeding leading to sustainable use of rangeland resources. The objective of this study is to test several vegetation indices r...

Managers and policy makers demand information on agriculture dynamics and distribution for the establishment of plans and strategies. For this purpose, the use of remote sensing data constitute an essential key to follow-up the agricultural systems dynamics. The aim of this study is to define a method based on fitted Normalized Difference Vegetatio...

In many Mediterranean countries, climate change issues, including the scarcity of water resources, are essential for overcoming the obstacles to sustainable food production. In Morocco, cereal growing is a strategic sector that contribute significantly to food security. In order to improve socioeconomic conditions in rural areas, the purpose of thi...

This research was conducted at the Tadla plain (central Morocco) that covers a total area of 320 000 ha in the center of the Oum Er-Rbia River basin with a semi-arid climate. During this work, a survey of a hundred farmers was carried out in 2016 in the study area. Based on the collected data, stepwise regression technique was used to develop a new...

The monitoring of drought statewide is a difficult issue especially when the national network of meteorological stations is sparse or do not cover the entire country. In this paper, rainfall satellite estimates derived from Tropical Rainfall Measuring Mission (TRMM) product have been used to evaluate the ability of remote sensing data to study the...

This poster summarises the first part of our results published in the paper: Combining Use Of TRMM And Ground Observations Of Annual Precipitations For Meteorological Drought Trends Monitoring In Morocco. the full paper is aviable in: https://www.researchgate.net/publication/336441103_Combining_Use_of_TRMM_and_Ground_Observations_of_Annual_Precip...

Our modest participation in the annual world bank conference on land and poverty international conference; Washington, DC, March 25–29, 2019

To understand changes in agricultural systems, it is necessary to monitor vegetation dynamics based on the spatio-temporal characterization of phenological parameters. The purpose of this study is to identify the main agricultural systems using a phenology-based classification method in a semi-arid context. Phenological metrics were derived from No...

Les agrumes représentent la première culture irriguée dans la plaine de Trifa (Berkane, Maroc) avec une superficie en extension continue. Ceci accentue les pressions sur les ressources en eau déjà limitées dans la région. De ce fait, une gouvernance efficace et rationnelle de l’eau agricole s’impose. Dans ce travail, nous proposons une approche bas...

La température de l'air et les précipitations sont deux variables météorologiques clés dans notre vie quotidienne. Elles sont très importantes dans plusieurs domaines, notamment dans la surveillance de l'environnement, les études sur les changements climatiques, la gestion du territoire et la prédiction des rendements des cultures. En agronomie, la...

Le climat joue un rôle essentiel dans l'évolution de tous les écosystèmes. Dans le domaine agricole par exemple, la relation entre le climat et les cultures est évidente et chaque plante a ses propres exigences vis-à-vis du climat au sein duquel elle se développe. Les données climatiques sont mesurées par des instruments spécifiques installés au ni...

The objective of this study was to use SAR (sensitivity of Synthetic Aperture Radar) data to detect the supply of irrigation water during the anthesis and grain-filling phenological stages of wheat in the irrigated Tadla perimeter of Morocco. Backscattering coefficients were derived from four ERS-1 (European Remote-Sensing Satellite-1) images acqui...

Recent geospatial technologies offer an infinite number of opportunities in the domain of land management and governance. This is due principally to the fact that new satellites allow the collection and monitoring of important information about soil, crops, weather, and climate. In this context, this chapter presents a review of studies conducted i...

Irrigated agriculture is an important strategic sector for Morocco, contributing to food security and employment. Nowadays, irrigation scheme managers shall ensure that water is optimally used. The main objective was to support the irrigation monitoring and management of wheat in the irrigated perimeter using optical remote sensing and crop modelin...

L’objectif de ce papier est de proposer et implémenter une procédure de classification d’images satellitaires optique et radar pour la cartographie des cultures, notamment la production d’une carte d’agrumes. 7 classes de cultures ont été considérées (les jeunes agrumes, les agrumes adultes, les vieux agrumes, les autres plantations, les céréales,...

Chapter 8 Support irrigation water management of cereals using optical remote sensing and modeling in a semi-arid region Tarik BENABDELOUAHAB, Hayat Lionboui, rachid hadria, Riad Balaghi, Abdelghani Boudhar, Bernard Tychon Irrigated agriculture is an important strategic sector for Morocco, contributing to food security and employment. Nowadays, irr...

Chapter 6 Time series multispectral images processing for crops and forest mapping. Two Moroccan cases. Loubna El Mansouri, Said Lahssini, rachid hadria, Nadia Eddaif, Tarik BENABDELOUAHAB, Asmae Eddakir This chapter highlights time series image processing for accurate agriculture characterization through two Moroccan experiences. The first case ai...

Recent geospatial technologies offer an infinite number of opportunities in the domain of land management and governance. This is due principally to the fact that new satellites allow the collection and monitoring of important information about soil, crops, weather and climate. In this context, this chapter presents a review of studies conducted in...

Surface soil moisture content (SSMC) monitoring constitutes an important parameter to estimate crop water requirements, especially in arid and semi-arid areas. Remote sensing became a useful tool for estimating SSMC. Two approaches were applied for monitoring the SSMC during the 2013/14 cropping season in the irrigated perimeter of Tadla (Morocco)...

Crop simulation models are used to describe the effect of climate, soil and agricultural practices on crop growth and crop production. When one wants to assess crop production over an agricultural area by using such models, he faces the difficulty of gathering input information for each agricultural units (or fields). Climate may be measured in a n...

Irrigated agriculture is an important strategic sector for Morocco, contributing to food security and employment. Nowadays, irrigation scheme managers shall ensure that water is optimally used. The main objective was to support the irrigation monitoring and management of wheat in the irrigated perimeter using optical remote sensing and crop modelin...

This chapter highlights time series image processing for accurate agriculture characterization through two Moroccan experiences. The first case aims crop mapping. A new classification approach based on multiple classifiers combination (MCC) was developed and applied to multi-temporal enhanced vegetation index (EVI) bands. The whole process is perfo...

Recent geospatial technologies offer an infinite number of opportunities in the domain of land management and governance. This is due principally to the fact that new satellites allow the collection and monitoring of important information about soil, crops, weather and climate. In this context, this chapter presents a review of studies conducted in...

In the context of climate change, successive droughts and floods affect the land cover and the socio-economic development, especially in arid and semi-arid regions such as Mediterranean countries. Indeed, these extreme events can be dramatic on vegetation cover whose depends largely on the quantity and the distribution of annual rainfalls. In Moroc...

L’objectif de ce papier est de présenter une étude comparative entre les drones et le levé topographique terrestre pour le calcul des cubatures dans des carriers minières. La comparaison concernera d’une part la qualité géométrique des produits dérivés des deux techniques et la précision et l’ergonomie de deux logiciels de traitements d’images de d...

Au niveau du périmètre irrigué de la Moulouya dans la région de l’Oriental, la superficie agrumicole a atteint 19400ha en 2017. Ils représentent les premières cultures irriguées dans la région et consomment, avec les cultures maraîchères et la betterave à sucre, environ 5200 m3/ha d’eau d’irrigation par an, provenant principalement des barrages. Le...

In this article, correlations to derive minimum (Tmin), mean (Tmean), and maximum (Tmax) air temperatures from land surface temperature (Ts) in Morocco are studied. Land surface temperature was derived from 349 decadal cloud-free images acquired by the Advanced Very High Resolution Radiometer sensor, onboard the National Oceanic and Atmospheric Adm...

The aim of this study was twofold: in the first part, we adjusted and tested AquaCrop 4.0 version parameters for durum wheat under semi-arid conditions. Grain yield, biomass and the evolution of soil water content (0-90cm layer) in an irrigated perimeter were simulated. The experiment was conducted in the Tadla region, Morocco, between 2009 and 201...

In Morocco, water availability is becoming a national priority for the agricultural sector. In this context, the stakeholders try continuously to improve strategies of water irrigation management, on one hand, and to assess vegetation water content status, on the other hand, in order to improve irrigation scheduling and prevent water stress that af...