VTechWorks staff will be away for the winter holidays starting Tuesday, December 24, 2024, through Wednesday, January 1, 2025, and will not be replying to requests during this time. Thank you for your patience, and happy holidays!
 

Monitoring land-cover changes in semi-arid regions: Remote sensing data and field observations in the Ferlo, Senegal

Simple item page
dc.contributor.authorDiouf, A.en
dc.contributor.authorLambin, E. F.en
dc.contributor.departmentSustainable Agriculture and Natural Resource Management (SANREM) Knowledgebaseen
dc.coverage.spatialFerloen
dc.coverage.spatialSahelen
dc.date.accessioned2016-04-19T18:55:45Zen
dc.date.available2016-04-19T18:55:45Zen
dc.date.issued2001en
dc.descriptionMetadata only recorden
dc.description.abstractDryland degradation rarely translates into linear, declining trends in vegetation cover due to interannual climatic variability. Appropriate indicators of land-cover modifications need to be defined for semi-arid regions. Our hypothesis is that degradation can be measured by: (1) a decrease in the resilience of vegetation to droughts; (2) a decrease in rain-use efficiency; and (3) a modification of floristic composition. The objective of this paper is to test the relationships between a remotely sensed indicator of vegetation, rainfall data and field measurements of biomass and floristic composition. The study was based on field measurements of vegetation conditions covering a period of 10 years, in the semi-arid region of the Ferlo in Senegal. Our results indicate that land-cover modifications in the Ferlo are best measured by changes in rain-use efficiency. No consistent trend in the relative abundance of grass species was visible at the scale of the decade, even on the two sites affected by degradation. Just after a drought, a given increase in rainfall results in less biomass production than is the case for normal years. ---Academic Pressen
dc.format.mimetypetext/plainen
dc.identifier1124en
dc.identifier.citationJournal of Arid Environments 48(2): 129-148en
dc.identifier.issn0140-1963en
dc.identifier.urihttp://hdl.handle.net/10919/65960en
dc.language.isoen_USen
dc.publisherAcademic Pressen
dc.rightsIn Copyrighten
dc.rights.holderCopyright 2001 Academic Pressen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectDesertificationen
dc.subjectDroughten
dc.subjectSemiarid zonesen
dc.subjectSoil degradationen
dc.subjectSoilen
dc.subjectRemote sensingen
dc.subjectLand cover changesen
dc.subjectLand degradationen
dc.subjectSahelen
dc.subjectLand useen
dc.subjectRainen
dc.subjectBotanical compositionen
dc.subjectMonitoringen
dc.subjectTemporal variationen
dc.subjectRain-use efficiencyen
dc.subjectEcosystemen
dc.titleMonitoring land-cover changes in semi-arid regions: Remote sensing data and field observations in the Ferlo, Senegalen
dc.typeAbstracten
dc.type.dcmitypeTexten

Files

Collections

Sustainable Agriculture and Natural Resource Management (SANREM) Knowledgebase