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Partager le résultat de cette recherche Interroger des sources externesLes modifications climatiques et les feux de forets causes,conséquences et évaluation / Zakia Gouachi
Titre : Les modifications climatiques et les feux de forets causes,conséquences et évaluation : Cas du Tell Constantinois Wilayas de (Jijel , Skikda , Constantine et Mila) Type de document : texte imprimé Auteurs : Zakia Gouachi, Auteur ; Hafiza Tatar (Née Boulkhedid), Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2015 Importance : 189 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Tags : Amenagements urbain et environnement Tell constantinos changements climatiques feux de foret formations végétales essences forestières climat températures précipitations sécheresse estivale déficit hydrique foret maquis broussailles Skikda Jijel constantine Mila
???? ????????? ???????? ???????? ????? ??????? ????????? ???????? ????????? ??????? ?????? ??????? ?????? ??????? ????? ?????? ????Index. décimale : 711 (Aménagement du territoire) Résumé : Characterized by an arid and semi-arid climate, Algeria is more likely to feel the effects of climate changes, which can cause extreme events and natural risks such as forest fires, which are at the top of the list identified by the UN, especially in the Mediterranean regions.
The hills of Constantine which is a part of northern Algeria, where physical and human conditions (type of vegetation, climate, relief ...) are combined to favour this scourge.
With the climate changes observed in recent decades, the forest fires have increased and are seriously threatening the forest ecosystems.
An analysis of the evolution of climatic data for the previous and current period as well as the released water balance highlights in the recent decades (1980 - 2012), an increase of the temperatures and a decrease of rainfalls, which were Among other causes that have increased the frequency of forest fires.
The consequences of forest fires are apparent in the region, the transformation of landscapes is present everywhere, it allows to understand the extent of shrinkage of the forest area; the maquis, which continue to expand, express the degradation of the forest cover.
Forest fires can be minimized only through a prevention which is based on risk assessment, and is the only way to reduce the cost of damages caused during major forest fires.
Diplôme : Magistère En ligne : ../theses/amenagement/GOU6707.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9916 Les modifications climatiques et les feux de forets causes,conséquences et évaluation : Cas du Tell Constantinois Wilayas de (Jijel , Skikda , Constantine et Mila) [texte imprimé] / Zakia Gouachi, Auteur ; Hafiza Tatar (Née Boulkhedid), Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2015 . - 189 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Tags : Amenagements urbain et environnement Tell constantinos changements climatiques feux de foret formations végétales essences forestières climat températures précipitations sécheresse estivale déficit hydrique foret maquis broussailles Skikda Jijel constantine Mila
???? ????????? ???????? ???????? ????? ??????? ????????? ???????? ????????? ??????? ?????? ??????? ?????? ??????? ????? ?????? ????Index. décimale : 711 (Aménagement du territoire) Résumé : Characterized by an arid and semi-arid climate, Algeria is more likely to feel the effects of climate changes, which can cause extreme events and natural risks such as forest fires, which are at the top of the list identified by the UN, especially in the Mediterranean regions.
The hills of Constantine which is a part of northern Algeria, where physical and human conditions (type of vegetation, climate, relief ...) are combined to favour this scourge.
With the climate changes observed in recent decades, the forest fires have increased and are seriously threatening the forest ecosystems.
An analysis of the evolution of climatic data for the previous and current period as well as the released water balance highlights in the recent decades (1980 - 2012), an increase of the temperatures and a decrease of rainfalls, which were Among other causes that have increased the frequency of forest fires.
The consequences of forest fires are apparent in the region, the transformation of landscapes is present everywhere, it allows to understand the extent of shrinkage of the forest area; the maquis, which continue to expand, express the degradation of the forest cover.
Forest fires can be minimized only through a prevention which is based on risk assessment, and is the only way to reduce the cost of damages caused during major forest fires.
Diplôme : Magistère En ligne : ../theses/amenagement/GOU6707.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9916 Exemplaires
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Titre : Les perturbations climatiques et leurs incidences possibles sur l'ecosystème forestier de la Mahouna Guelma Type de document : texte imprimé Auteurs : Amina Beldjazia, Auteur ; Djamel Alatou, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 166 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Tags : Changements climatiques Forêt de la Mahouna NDVI Stress thermique Climate change Forest of Mahouna Thermal Stress ???? ?????? ???? ????? NDVI??????? ??????? Index. décimale : 570 Sciences de la vie. Biologie Résumé : Mediterranean ecosystems are considered paricularly sensitive to climate change. Any change of climatic factors affects the structure and the functioning of these ecosystems and has influence on the plant productivity. The main objective of this work is to characterize one of the Mediterranean ecosystems; the forest of the Mahouna (located in the North East of Algeria) in point of view of edaphic, vegetation and
their climate link using meteorological data (precipitation and temperatures for a period of 30 years) and satellite imagery for the period from 1987 to 2015. The analysis of vegetation enables to determine 46 botanical families with dominance of phanerophytes and therophytes, which grow on rich soils in organic matter, with an acid pH, variable texture from sandy-loamy, silty-sandy to clay or very clay
at different places. The diachronic study of this massive shows a reduction in the area of plant cover in the order of 1.97%. The climate analysis indicates an increase in the monthly average maximum temperatures, with a highly significant warming of 0.12 ° C for the spring season and the rainfall is variable from one year to another and
tends to a more and more dry years . The three-hours thermal data for the period from 2000 to 2010 highlights 502 days of cold stress and 373 days of heat stress, affecting plant productivity, where there was a decrease in NDVI values of vegetation exposed to thermal stress periods.
Diplôme : Doctorat en sciences En ligne : ../theses/biologie/BEL6991.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10403 Les perturbations climatiques et leurs incidences possibles sur l'ecosystème forestier de la Mahouna Guelma [texte imprimé] / Amina Beldjazia, Auteur ; Djamel Alatou, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 166 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Tags : Changements climatiques Forêt de la Mahouna NDVI Stress thermique Climate change Forest of Mahouna Thermal Stress ???? ?????? ???? ????? NDVI??????? ??????? Index. décimale : 570 Sciences de la vie. Biologie Résumé : Mediterranean ecosystems are considered paricularly sensitive to climate change. Any change of climatic factors affects the structure and the functioning of these ecosystems and has influence on the plant productivity. The main objective of this work is to characterize one of the Mediterranean ecosystems; the forest of the Mahouna (located in the North East of Algeria) in point of view of edaphic, vegetation and
their climate link using meteorological data (precipitation and temperatures for a period of 30 years) and satellite imagery for the period from 1987 to 2015. The analysis of vegetation enables to determine 46 botanical families with dominance of phanerophytes and therophytes, which grow on rich soils in organic matter, with an acid pH, variable texture from sandy-loamy, silty-sandy to clay or very clay
at different places. The diachronic study of this massive shows a reduction in the area of plant cover in the order of 1.97%. The climate analysis indicates an increase in the monthly average maximum temperatures, with a highly significant warming of 0.12 ° C for the spring season and the rainfall is variable from one year to another and
tends to a more and more dry years . The three-hours thermal data for the period from 2000 to 2010 highlights 502 days of cold stress and 373 days of heat stress, affecting plant productivity, where there was a decrease in NDVI values of vegetation exposed to thermal stress periods.
Diplôme : Doctorat en sciences En ligne : ../theses/biologie/BEL6991.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10403 Exemplaires
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