Boutkhil Morsli

Land use and land cover are critical factors that influence the environment and human societies. The dynamics of LULC have been constantly changing over the years, and these changes can be analyzed at different spatial and temporal scales to evaluate their impact on the natural environment. This study employs multitemporal satellite data to investi...

Algerian soil is exposed to intense soil erosion due to several factors, mainly natural and human. In the present work, the assessment of soil erosion–deposition processes in a forest area using the fallout radionuclide cesium-137 is proposed. The Cs-137 technique, which is used for investigating rates and patterns of soil erosion, has been success...

The pace and magnitude of land use and land cover (LULC) change are of global concern due to its role in pressing issues such as climate change, food security, soil degradation and biodiversity loss. The present study analyzed the spatiotemporal changes in LULC in the Hafir-Zariffet forest of Tlemcen, Northwest Algeria. We also simulated possible f...

The Mediterranean Basin covers more than 2 million square kilometres and is surrounded by three continents: Africa, Asia, and Europe. It is home to more than 500 million people and is projected to reach 670 million by 2050. The basin is rich in species diversity, with a great wealth of endemism. The supply of ecosystem services is greatly challenge...

The Mediterranean Basin covers more than 2 million square kilometres and is surrounded by three continents: Africa, Asia and Europe. The Basin that is rich in biodiversity has tilted towards warmer and drier conditions over the last decades. The emerging climatic conditions particularly the increase in the number of climate extremes are bringing ne...

As far as industry, agriculture, urbanization, lithology and climate are concerned, surface-water vulnerability to pollution has not ceased to amplify especially in semi-arid to arid areas. In the countries of the southern shore of the Mediterranean and most particularly in Algeria, surface-water quality is highly impacted by anthropogenic activiti...

Water and soil are the most valuable assets for man. In North Africa, these delicate resources are undergoing unprecedented qualitative and quantitative degradation (Figs. 5.1 and 5.2). That area has a reputation for being subject to very high erosive risks. Despite the development of different strategies for the SWC and management of these resourc...

The importance of the soil degradation in the Mediterranean area, more particularly in Algeria, has revealed the need for a diagnosis of the erosion processes’ dynamism. In this context, the present work discusses the results obtained by different approaches (conventional methods, Revised Universal Soil Loss Equation (RUSLE), and fallout radionucli...

Forest degradation poses a serious threat to the stability of the global climate because forests store more carbon than any other terrestrial ecosystem. Forest cover is one of the most important topics in global environmental discussions and negotiations. It is therefore essential to have reliable and up-to-date information on the status of forest...

Background: Forest cover change continues to be one of the most important topics in global environment discussions and negotiations. In North Africa, there is a broad consensus on forest decline but available information on the extent and rate of degradation has been far lower than needed. The present study uses the example of the cork oak forest o...

To assess seasonal patterns of suspended sediment load and its erosion-transport interactions, 17 years of river monitoring data from the Isser River Basin (northwest Algeria) was studied, considering continuous and event-scale approaches. The results show significant differences in sediment yield and transport processes between dry and wet periods...

Soil erosion is estimated as a natural phenomenon which threats the soil stability especially in the arid regions by two important agents which are water and wind. Rainfall intensity, soil types, vegetal cover, and other parameters are the controllers of the intensity of water soil erosion. The main objective of this study is to estimate the soil e...

Soil erosion and soil deposition represent a serious problem throughout the world, because of their impact on sustainable agriculture as well as on environmental conservation. 137Cs and the 210Pb are good radiotracers for documenting medium and long terms’ soil erosion and deposition. 137Cs and 210Pb radiotracers’ redistribution was studied in a cu...

During the last few years, the City of Bechar in Algeria has witnessed some extreme events, such as the great flood of the year 2008 in which an exceptional amount of rain was recorded with a flow rate of 830 m ³ ∙s ⁻¹ ( hwater = 4 m, b = 200 m); similar flooding also occurred in 2012 and 2014. The problem is that most of the City of Bechar has an...

The present article aims to evaluate soil losses due to water erosion and to contribute to the knowledge about the impact of vegetation cover on the Isser watershed that is located in northwestern Algeria. For this purpose, two predictive models were used, namely the Priority Actions Program by the Regional Activity Center (PAP/RAC) model and the r...

In the past, rural society has always been able to implement some forms of community management of space, water and land that have served as a support for the survival of populations that are often too large for the available resources. The mountainous region of Béni-Snous offers a wide variety of strategies for water and soil fertility conservatio...

Precise knowledge regarding the quantities of water available in the Wadi Bechar watershed and better management of this resource is necessary to initiate the transformation of rainfall data into hydrometric data (simulated flow); this is the main objective of the hydrological rainfall–runoff modeling. The primary focus of this paper is the rainfal...

Water erosion remains a major concern on the marly slopes. Where erosive processes continue to increase and continue to pose serious problems and where knowledge is still insufficient on erodibility and its evolution and on solutions to soil erosion problems. The aim of this work is to contribute to the understanding of the functioning of soils on...

Soil erosion is estimated as a natural phenomenon which threats the soil stability especially in the arid regions by two important agents which are water and wind. Bechar’s watershed is located in the south-west of Algeria; this region is characterized by an arid climate regime. The main objective of this study is to estimate the soil erosion pheno...

This work is based on the characterization of the physico-chemical parameters in the groundwater of the Bechar-Kenadsa region in southwest Algeria. To achieve this goal, we have collected a database of a water sampling survey that has been done by the National Hydric Resources Agency (ANRH) of the different water points located in the study area ac...

Watershed of Bechar, Southwest of Algeria) | L'enquete statistique sur la relation entre valeur scientifique et la valeur globale des géosites du Plateau d'Oltina (Roumanie) | Urbanization Tools between Planning and Reality: the Case of M'sila's Land Occupancy Plan | Djen Djen New Port and the Metropolisation of Jijel City (Algeria) | La production...

In Algeria, erosion and solid transport constitute a major constraint to the development of agriculture and to the management of hydrotechnical works (more than 20% are silted). Due to the irregular rains that characterize the Mediterranean semi-arid zones, the topography of the mountainous areas, the fragility of the soils, the absence of vegetati...

Soil erosion is a global environmental problem, and anthropogenic fallout radionuclides offer a promising tool for describing and quantifying soil redistribution on decadal time scales. The ¹³⁷Cs technique for investigating rates and patterns of soil erosion has now been successfully applied in a wide range of environments. This radionuclide strong...

In Algeria where the availability of water is limited, its unequal distribution and its demand for strong growth, the loss of capacity of water dam by their continuous silting is regarded as a crucial problem at the national level .The recuperation of the lost capacity of reserves by techniques of dredging, of suction or of hunting of the sediments...

Alternating drought – hydration of soils results in a particular hydrodynamic behaviour of clayey soils and therefore the risk of mass movement and erosion. This study allowed understanding this dynamics by monitoring the structural evolution and infiltration on the one hand and by studying the effect of this particular behavior on the risk of runo...

Impact of protection on the fight against desertification in the steppe rangelands : the case of Naâma region (south-west of Algeria) The fight against desertification in the region of Naâma begins with restoring severely degraded steppe rangelands. In this context several hundred thousand hectares of pastoral land were exempted from agropastoral a...

The study of erosion manifestations along a landscape transect with the same red soils showed the importance of slope, land use and stone walls on the contour line. The topsoil fertility & depth are in relation with the vegetation cover and the erosion intensity. The application of intensive agricultural techniques (land husbandry, manure, crops un...

RÉSUMÉ En Algérie, l’eau et le sol, ressources vitales et de production, connaissent actuellement une dégradation en ce qui a trait à la quantité et la qualité. Ce processus ne cesse de s’amplifier et se traduit par la diminution et l’épuisement de ces ressources et l’aggravation des problèmes environnementaux. Sur les versants du nord-ouest algéri...

During the last 60 years, the topics treated by the researchers concerned with the soil and water conservation methods have changed.From 1945 to 1970, developers observed the importance of erosion damages: decrease of soil productivity, gullies, landslides, silting of dams and floods. Few researches were conducted on "soil and water conservation" (...

In Algeria, water and soil, vital resources of production, are currently experiencing degradation in terms of quantity and quality. The deficit of rainfall, the frequency and intensity of droughts, and torrential rains exacerbate growing water stress and erosion phenomenon. These conditions involve adaptation strategies and the development of manag...

This survey gives a complement in analysing traditional management practices of soil and water conservation in North West Algerian Mountains specially Khemis, Be ni Snous and Zouanef mountai ns which have got a bad reputation concerning erosion risks. Analysis of field obser vations show that management practices used now with more successfully...

1. Abstract This survey gives a complement in analysing traditional management practices of soil and water conservation in North West Algerian Mountains specially Khemis, Beni Snous and Zouanef mountains which have got a bad reputation concerning erosion risks. Analysis of field observations show that management practices used now with more success...

Résumé L'érosion des ~01s des montagnes algériennes est préoccupante. En effet la pression démographique s'accentue chaque jour et l'impact de l'érosion apparaît clairement au niveau des rendements. Malgré les grands moyens mécaniques développés pour la lutte contre l'érosion, celle-ci élimine la mince pellicule organo-minérale et peut enlever comp...

Les monts de Beni-Chougrane (Ouest de l’Algérie) sont soumis à une intense activité d’érosion. Ce phénomène a provoqué la dégradation des sols agricoles et l’envasement du barrage de Fergoug. Afin d’étudier et de comprendre ce phénomène dans cette région, L’Institut National de Recherches Forestières de MASCARA a installé des parcelles expérimental...

Pour faire face à une dégradation sévère de la couverture végétale, des terres et du réseau hydrographique, l'Administation des Forêts a imposé une stratégie vigoureuse d'équipement rural (DRS) qui s'est traduite par la reforestation de 800 000 ha de terres marginales, la correction de centaines de ravines et le terrassement de 350 000 ha de terres...

The measurements made concerning runoff, sheet erosion and biomass production in a network of 50 plots (100 m2) distributed over four mountainous mediterranean regions (slopes of 10 to 45 $) ranging from 400 to 900 m of altitude and from 300 to 650 mm of rainfalls. From 1986 to 1995, comparisons were made on the behaviours of bare fallows (maximum...

Depuis le début du siècle, la région montagneuse septentrionale de l'Algérie est soumise à de fortes pressions en hommes et en bétail qui ont contribué à une sévère dégradation des sols, de la couverture végétale et des rivières. Pour protéger les terres et réduire l'envasemenet des barrages, l'administration des forêts a imposé une stratégie d'équ...

The experience of Algeria with small hydraulic installations started after 1962. The government restarted during the Eighties, a new important programme of development of small hydraulics including 700 hill reservoirs and 300 small dams. To evaluate these infrastructures, to answer the essential of the questions raised about these hill reservoirs a...