Zobrazeno 1 - 10
of 103
pro vyhledávání: '"STRATE LIGNEUSE"'
Publikováno v:
DIAL
Avec un recouvrement moyen de 1 à 5 % pour la strate arborée et de 0 à 20 % pour la strate buissonnante, la densité des ligneux au Sahel est faible. Cependant, cette composante ligneuse est capitale dans ces écosystèmes à vocation essentiellem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::91006002b4c47455af1c583ca461e156
https://hdl.handle.net/2078.1/213184
https://hdl.handle.net/2078.1/213184
Autor:
Richard Escadafal
Regions with dry climates cover a large part of the world’s landmass (more than 40%). Collectively known by the English term “drylands”, they encompass a wide range of ecosystems, including the American “deserts” of California, Nevada and M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a855044b44618b8e9caa72974ac299af
https://doi.org/10.1016/b978-1-78548-105-5.50001-3
https://doi.org/10.1016/b978-1-78548-105-5.50001-3
Autor:
Monique Simier, Josiane Seghieri
Publikováno v:
Journal of Tropical Ecology. 18:897-912
The aim of this work was to analyse the phenological variation of a residual invasive semi-evergreen shrub in Sahelian fallows in Niger. This species, Guiera senegalensis (Combretaceae), has benefited from the elimination of other species thanks to i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e18a7ebda0c59cc8ae94d6e79aa980d
https://doi.org/10.1017/s0266467402002584
https://doi.org/10.1017/s0266467402002584
Publikováno v:
Webbia. 56:181-199
Resume Cette etude compare les pâturages sous et hors couvert ligneux d'une savane a Combretaceae de la zone soudano-sahelienne de Thysse Kayemor (Senegal). L'analyse des parametres floristiques et de production de ces herbages permet de distinguer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a00dc2dd198121e435b2339079e165db
https://doi.org/10.1080/00837792.2001.10670711
https://doi.org/10.1080/00837792.2001.10670711
Autor:
Christian Floret
Publikováno v:
La Grande Muraille Verte ISBN: 9782709917384
Ce chapitre s’appuie sur des extraits des synthèses réalisées par le projet : La jachère en Afrique tropicale. De la jachère naturelle à la jachère améliorée. Le point des connaissances, Ch. Floret et R. Pontanier (eds), John Libbey, 2001.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ca6ece3b92183f2ea27ab42b1cb16b6
http://books.openedition.org/irdeditions/3322
http://books.openedition.org/irdeditions/3322
Publikováno v:
Journal of Vegetation Science. 6:499-508
This study evaluates the processes of recolonization of abandoned fields by native vegetation under conditions of intensive human activity (fire, intensive grazing, firewood cutting) in a semi-arid tropical region savanna of northern Cameroon. Second
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31efeaf85a2c9026ffc465b262f070f8
https://doi.org/10.2307/3236348
https://doi.org/10.2307/3236348
Publikováno v:
Scopus-Elsevier
Phenological patterns of herbaceous and woody plants well represented in the Sudano-Sahelian savannas of northern Cameroon were studied in relation to water availability in three contrasted soil types. Mean annual precipitation in this region is 800
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5185e64ed68b22ed7fca5b3e0f5b8af
https://doi.org/10.1017/s0266467400008713
https://doi.org/10.1017/s0266467400008713
Publikováno v:
Phenology and Climate Change
Xiaoyang Zhang. Phenology and Climate Change, InTech, pp.143-178, 2012, 978-953-51-0336-3
HAL
Xiaoyang Zhang. Phenology and Climate Change, InTech, pp.143-178, 2012, 978-953-51-0336-3
HAL
West tropical Africa (WTA) is known to be one of the most exposed regions in the world to climate change. The seasonality of rainfall and of atmospheric conditions, including a dry season lasting for several months in most of the area, strongly influ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d2d4d620f52febce8b6ab78074c16ed
https://hal.archives-ouvertes.fr/hal-00681555
https://hal.archives-ouvertes.fr/hal-00681555