Effect of spatial resolution on remotely-sensed rangeland vegetation indices
Introduction Rangeland ecosystems represent a major management concern for the future due to the threats caused by growing human population and loss of biodiversity.More information on the quality and quantity of vegetation is needed to assess rangeland ecosystems.Numerous remotely-sensed vegetation indices ( VIs) have been developed to detect and characterize vegetation with limited success in semi-arid environments because of the challenge in detecting low levels of biomass and sparse vegetation cover (Leprieur et al.,2000).With the multiplication of image product availability,several studies have attempted to characterize vegetation in arid and semi-arid environments using VIs at different spatial scales and resolutions.However,the effects of scale on remote sensing-derived parameters are not well understood.The goal of this study was to analyze the effects of spatial resolution on VIs in a semi-arid environment.
vegetation indices spatial resolution semi‐arid environment
J.Théau T.T.Sankey K.T.Weber S.Ahmed J.Tibbitts
Cemagref-UMRTETIS,Maison de la Télédétection,34093 Montpellier,France GIS Training and Research Center,Idaho State University,Pocatello,Idaho,83209-8104,USA
国际会议
呼和浩特
英文
2008-06-29（万方平台首次上网日期，不代表论文的发表时间）