An environmental assessment of land cover and landuse change in Central Siberia using quantified conceptualoverlaps to reconcile inconsistent data sets

摘要

Environmental monitoring and assessment frequently require remote sensing techniques to bedeployed. The production of higher level spatial data sets from remote sensing has often beendriven by short-term funding constraints and specific information requirements by the fundingagencies. As a result, a wide variety of historic data sets exist that were generated using differentatmospheric correction methods, classification algorithms, class labelling systems, trainingsites, map projections, input data and spatial resolutions. Because technology, science andpolicy objectives are continuously changing, repeated natural resource inventories rarelyemploy the same methods as in previous surveys and often use class definitions that areinconsistent with earlier data sets (Comber, Fisher and Wadsworth 2003). Since it is generallynot economically feasible to recreate these historic land cover/land use data sets, ofteninconsistent data sets have to be compared.