RefDoc
Haut

Faire une nouvelle recherche
Make a new search
Lancer la recherche


Titre du document / Document title

Interactions between climate and desertification

Auteur(s) / Author(s)

SIVAKUMAR M. V. K. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) World Meteorological Organization, 7bis, Avenue de la Paix, 1211 Geneva, SUISSE

Résumé / Abstract

Deserts are known to mankind, but the term desertification has always been an elusive concept. It is now defined in the United Nations Convention to Combat Desertification (UNCCD) as land degradation in the drylands (land falling within arid, semi-arid and dry sub-humid areas) resulting from various factors, including climatic variations and human activities. This definition, which is now being used worldwide to describe desertification and its impacts, leads to the need to consider carefully the two-way interactions between climate and desertification. Dramatic changes in agricultural practices during the last several decades are one of the main driving forces for land degradation in the drylands and examples of land degradation are given for several regions around the world. The effects of desertification on climate have been described mainly in terms of changes in land use and land cover leading to land degradation; overgrazing; biomass burning and atmospheric emissions; agriculture's contribution to air pollution; forest and woodland clearing and accelerated wind erosion; anthropogenic land disturbances and wind erosion; and the impact of irrigated agriculture on surface conditions in drylands. It is equally important to consider the impact of dryland climates on soils and vegetation and the impact of climate change on desertification. It is important to adopt uniform criteria and methods to assess desertification and encourage monitoring of dryland degradation in all the regions around the world. To better understand the interactions between climate and desertification, it is also important to identify the sources and sinks of dryland carbon, aerosols and trace gases in drylands.

Revue / Journal Title

Agricultural and forest meteorology    ISSN  0168-1923   CODEN AFMEEB 

Source / Source

2007, vol. 142, no 2-4 (241 p.)  [Document : 13 p.] (2 p.3/4), [Notes: This issue is largely based on the presentations made at the International Workshop on the Contribution of Agriculture to the State of Climate, 27-30 September 2004 in Ottawa, Ontario, Canada], pp. 143-155 [13 page(s) (article)]

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Amsterdam, PAYS-BAS  (1984) (Revue)

Mots-clés anglais / English Keywords

Physical environment

;

Woodland

;

Wind erosion

;

Forest zone

;

Air pollution

;

Emission

;

Atmosphere

;

Burning

;

Biomass

;

Land use

;

Ecological damage

;

Desertification

;

Climate

;

Interaction

;

Mots-clés français / French Keywords

Environnement physique

;

Forêt claire

;

Erosion éolienne

;

Zone forestière

;

Pollution air

;

Emission

;

Atmosphère

;

Brûlage

;

Biomasse

;

Occupation sol

;

Dégradation environnement

;

Désertification

;

Climat

;

Interaction

;

Mots-clés espagnols / Spanish Keywords

Medio ambiente físico

;

Formación boscosa

;

Erosión eoliana

;

Zona forestal

;

Contaminación aire

;

Emisión

;

Atmósfera

;

Quema

;

Biomasa

;

Ocupación terreno

;

Degradación ecológica

;

Desertificación

;

Clima

;

Interacción

;

Mots-clés d'auteur / Author Keywords

Land degradation

;

Land use and land cover changes

;

Overgrazing

;

Biomass burning and atmospheric emissions

;

Air pollution

;

Forest and woodland clearing

;

Wind erosion

;

Climate change

;

Localisation / Location

INIST-CNRS, Cote INIST : 11784, 35400014542998.0060

Nº notice refdoc (ud4) : 18551530



Faire une nouvelle recherche
Make a new search
Lancer la recherche
Bas