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Displaying 386 - 390 of 1605Effects of climate and land-surface processes on terrestrial dissolved organic carbon export to major U.S. coastal rivers
This study aims to understand the influences of climate change and land surface processes on the variation of in-stream DOC concentrations in coastal rivers crossing different climate zones. Monthly observations spanning multiple years in seven major rivers in four different climate zones within the U.S. were analyzed for correlations between dissolved organic carbon (DOC) concentration and surface air temperature, precipitation, land cover and discharge.
How do policy options modify landscape amenities? An assessment approach based on public expressed preferences
Facing the changes in the agricultural sector as well as new growing demands from society in relation to the European countryside, new questions emerge as to the management of the agricultural landscapes. The multiple combination of production with the support of multiple functions is a challenge for present day management. Tools are needed that make it possible to assess how a certain landscape can support in particular cultural and amenity functions, those that directly depend on the public preferences.
Valuing ecosystem services for conservation and development purposes: A case study from Kenya
This paper mapped and valued key inter-related drylands ecosystem services of importance to pastoralists, crop farmers, the tourism industry, conservationists, and policy planners in the Ewaso Ng’iro basin, the largest of the five major basins in Kenya. We used an ecosystem services approach where only final benefits are valued to avoid double counting. The final benefits are ecosystem services or commodities which have an economic value.
Using a multilevel approach to analyse the case of forest conflicts in the Terai, Nepal
Recent years have witnessed an intensification of forest-related conflicts between various stakeholders in Nepal, particularly between the state and local people, over the control, management and use of forests in the southern plains of the Terai. This paper analyses the multiple dimensions of conflicts in Terai forestry policy and practice using a multilevel approach. Multilevel forest conflicts in the Terai are explained as a nested concept, existing at different overlapping levels (ranging from the global level to households).
Land-cover change in the conterminous United States from 1973 to 2000
Land-cover change in the conterminous United States was quantified by interpreting change from satellite imagery for a sample stratified by 84 ecoregions. Gross and net changes between 11 land-cover classes were estimated for 5 dates of Landsat imagery (1973, 1980, 1986, 1992, and 2000). An estimated 673,000km²(8.6%) of the United States’ land area experienced a change in land cover at least one time during the study period. Forest cover experienced the largest net decline of any class with 97,000km² lost between 1973 and 2000.