Catégories
Catégories principales > 07 - ENVIRONNEMENT > 7.5 - Dégradation : Impact, Désertification
7.5 - Dégradation : Impact, Désertification |
Documents disponibles dans cette catégorie (283)
Article
Salinization is a major soil degradation threat in irrigated lands worldwide. In Portugal, it affects several pockets of irrigated agricultural areas, but the spatial distribution and intensity of soil salinity are not well known. Unlike convent[...]Article
We explored the relative importance of climate oscillations and human-driven disturbances on the change in vegetation biomass in agroecosystems, and whether it is associated with land use. Our main contribution is a quantitative treatment of the[...]Article
Droughts have severe impacts on the economy, society, and environment. They also have impacts on groundwater and vice versa. While most analyses consider drought and groundwater as disconnected, we argue that drought and groundwater management s[...]Article
In recent decades, most Spanish Mediterranean agricultural regions have been transformed to meet global food demands and have joined global agricultural production networks: a convergence process that has granted them steady economic growth. In [...]Article
Meteorological drought is defined as the event that arises when precipitation is lower than average and initially affects rainfed crops; this is transformed into hydrological drought when persistent drought affects water storage. We have studied[...]Article
Z.M. Nigatu ; D. Fan ; W. You ; A.M. Melesse ; L. Pu ; X. Yang ; X. Wan ; Z. Jiang |Soil moisture (SM) and groundwater (GW) depletion triggered by anthropogenic and natural climate change are influencing food security via crop production per capita decrease in the Nile River Basin (NRB). However, to the best of our understandin[...]Article
S. Mohammed ; A. Elbeltagi ; B. Bashir ; K. Alsafadi ; F. Alsilibe ; A. Alsalman ; M. Zeraatpisheh ; A. Széles ; E. Harsányi |Drought is a natural hazard which affects ecosystems in the eastern Mediterranean. However, limited historical data for drought monitoring and forecasting are available in the eastern Mediterranean. Thus, implementing machine learning (ML) algor[...]Article
The main type of consumptive water use is crop evapotranspiration. The historical evolution of crop evapotranspiration depends on climate and cropland changes. These two latter variables present complex interactions and are expected to continue [...]Article
In 2013, the United Nations Convention to Combat Desertification (UNCCD) established a sciencepolicy interface (SPI) to address Parties need for demand-driven, timely, interdisciplinary science and technical knowledge to tackle problems of des[...]Article
A. Elnashar ; H. Zeng ; B. Wu ; T.G. Gebremicael ; K. Marie |Assessing environmentally sensitive areas (ESA) to desertification and understanding their primary drivers are necessary for applying targeted management practices to combat land degradation at the basin scale. We have developed the MEditerranea[...]Article
O. Kairis ; A. Karamanos ; D. Voloudakis ; J. Kapsomenakis ; C. Aratzioglou ; C. Zerefos ; C. Kosmas |The impact of simulated future climate change on land degradation was assessed in three representative study sites of Thessaly, Greece, one of the countrys most important agronomic zones. Two possible scenarios were used for estimation of futur[...]Article
R. Halbac-Cotoara-Zamfir ; A. Marucci ; R. Salvia ; G. Quaranta ; A. Sateriano ; M. Cecchini ; L. Bianchini |This commentary debates on the role of multiple socioeconomic drivers of fringe land degradation (including, but not limited to, population and social dynamics, economic polarization, and developmental policies), as a novel contribution to the d[...]Article
The latest world atlas of desertification represents a turning point in the diagnosis of desertification. While it forgoes desertification mapping due to the intrinsic complexity of the phenomenon and the impossibility of measuring it using a si[...]Article
La dégradation des terres est un problème préoccupant et dactualité dans plusieurs régions du monde. Il représente toujours un thème de recherche dactualité en géographie. Cet intérêt prend de limportance surtout avec lavènement du changemen[...]Article
Agriculture has been identified as one of the main drivers of environmental degradation in the European Union (EU). It can have negative impacts on air, water, soil and biodiversity. The condition of agroecosystems is affected by soil degradatio[...]Article
A. Shakoor ; A.A. Dar ; M.S. Arif ; T.H. Farooq ; T. Yasmeen ; S.M. Shahzad ; M.A. Tufail ; W. Ahmed ; G. Albasher ; M. Ashraf |Globally, agriculture sector is the significant source of greenhouse gases (GHGs) emissions into the atmosphere. To achieve the goal of limiting or mitigating these emissions, a rigorous abatement strategy with an additional focus on improving c[...]Article
Soil, a non-renewable resource, sustains life on Earth by supporting around 95% of global food production and providing ecosystem services such as biomass production, filtration of contaminants and transfer of mass and energy between spheres. Un[...]Rapport, Expertise, Working Paper
J.-L. Chotte ; J. Albergel ; B. Bonnet ; A. Cornet ; T. Heulin ; P. Hiernaux ; A. Ickowicz ; M. Loireau ; M. Requier-Desjardins ; E. Scopel ; H. Soubelet ; B. Sultan ; M. Thibon ; Y. Travi ; L. Vidal | Montpellier [France] : CSFD. Comité Scientifique Français de la Désertification | Fiche d'actualité | 2022Le premier bilan d'étape de l'impact de l'initiative de la Grande Muraille Verte (GMV) au Sahel (septembre 2021) met en évidence l'urgence d'actions coordonnées, impliquant tous les acteurs, pour atteindre les ambitions annoncées en 2007. Aujour[...]Thèse, Mémoire, Master
La présente étude est inspirée dun débat scientifique actuel autour de lévaluation économique des services écosystémiques rendus par le sol. Elle détaille lestimation des services identifiés dans le bassin versant de lO.Lachbal et développe [...]Article
Desertification is a serious threat to human survival and to ecosystems, especially to inland desert oases. An assessment of desertification severity is essential to ensure national sustainable development for agricultural and land expansion pro[...]Article
The progressive erosion of the coastline is not only a danger to Tunisias coastal infrastructure, but it also threatens nature reserves and dune systems with their important ecosystem functions. A KfW Development Bank project relies on a combin[...]Rapport, Expertise, Working Paper
P. Lavigne Delville ; E. Léonard ; J.-P. Colin ; M. Requier-Desjardins ; P. Burnod ; J.L. Couture | Montpellier [France] : Pôle foncier de Montpellier | 2022Parallèlement aux phénomènes climatiques, la dégradation des terres résulte dactivités humaines qui surexploitent des écosystèmes. Or, rares sont les espaces vides et sans droits. Toute intervention sur un écosystème prend place dans des espace[...]Actes de Congrès ou Communication isolée
P. Lavigne Delville ; E. Léonard ; J.-P. Colin ; M. Requier-Desjardins ; P. Burnod ; J.L. Couture ; CIHEAM-IAMM (Montpellier, France) ; Pôle Foncier (Montpellier, France) | 2022Just like climate hazards, land degradation is the result of human activities that overexploit ecosystems. Yet, there are very few empty places where no property rights to land and other natural resources exist. Ecological interventions usually [...]Article
A. Alitane ; A. Essahlaoui ; M. El Hafyani ; A. El Hmaidi ; A. El Ouali ; A. Kassou ; Y. El Yousfi ; A. Van Griensven ; C.J. Chawanda ; A. Van Rompaey |Soil erosion is an increasingly issue worldwide, due to several factors including climate variations and humans activities, especially in Mediterranean ecosystems. Therefore, the aim of this paper is: (i) to quantify and to predict soil erosion[...]Article
M. Sabir ; M. Naimi ; S. Hossayni |LAnti Atlas occidental, montagne du Sud-Ouest marocain, est sujet à un exode rural intense depuis plusieurs décennies. Ainsi les terrasses agricoles aménagées depuis plusieurs siècles sur les versants des vallées sont abandonnées et dégradées. [...]Article
N. Zekri ; A. Tounkob |Lérosion hydrique est la principale forme de dégradation des sols en Algérie septentrionale. Ce phénomène naturel inévitable qui affecte notamment la partie nord-ouest du pays est exacerbé par les pratiques effarantes de lhomme et la fragilité[...]Article
M. Arabi |Pour lutter contre l'érosion, l'Administration forestière algérienne a généralisé, à partir des années 1940, sur 387.833 ha de terre considérée comme sensibles à l'érosion une stratégie d'équipement rural de défense et restauration des sols (DRS[...]Article
P. Palma ; S. Fialho ; A. Lima ; A. Catarino ; M.J. Costa ; M.V. Barbieri ; L.S. Monllor-Alcaraz ; C. Postigo ; M.L. de Alda |The study aimed to assess the occurrence and the environmental risk of a group of 51 selected pesticides in the Guadiana Basin (a biodiversity hotspot, in the Mediterranean). The most abundant pesticides were bentazone and 2,4-D, while terbuthyl[...]Article
N. Baran ; N. Surdyk ; C. Auterives |Contaminants in groundwater are a major issue worldwide. Temporal trends of such occurrences in French groundwaters were evaluated for several active substances of pesticides belonging to different chemical classes, to identify key factors expla[...]Article
Leffacement du couvert végétal dans les steppes de lEst marocain, territoire vulnérable par nature en situation très déplorée, est subséquent aux phénomènes de défrichement et de mise en culture, de surcharge animale, de mitage urbain et de la[...]