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Displaying 536 - 540 of 1195Using� spectral analysis� of� Landsat-5� TM� images to map� coastal� wetlands� in the Amazon River mouth, Brazil
Tropical coastal wetlands form complex and dynamic ecosystems based on a mixture of vegetation, soil, and water components. Optical remotely sensed data have often been used to characterize and monitor these ecosystems, which are among the environments most threatened by climate change and anthropogenic activity worldwide.
Effects of Land Use Changes on the Ecosystem Service Values of Coastal Wetlands
Changes in the coastal landscape of Southern Sinaloa (Mexico), between 2000 and 2010, were analyzed to relate spatial variations in wetlands extent with the provision and economic value of the ecosystem services (ES). Remote sensing techniques applied to Landsat TM imagery were used to evaluate land use/land cover changes while the value transfer method was used to assess the value of ES by land cover category. Five wetland types and other four land covers were found as representative of the coastal landscape.
Landscape Planning and Management Tool for Land and Water Resources Management: An Example Application in Northern Ethiopia
Land and water degradation due to on-site soil/nutrient loss and off-site pollution/sedimentation are serious environmental problems. Landscape planning and management tools are essential to implement best management practices targeted at locations where they are needed most. Although many soil/water-landscape studies have been published in the last 2 decades, progress in developing operational tools for supporting landscape planning to minimize land and water degradation in developing regions is still modest.
Experience in testing and adapting the LADA methodology for land degradation assessment and mapping in arid regions at the local level
The LADA methodology (land degradation assessment in drylands) is first used to assess land degradation at the local level for test sites in Russia. The results of the tested methodology are in general positive and, at the same time, indicate the need to adapt it for the assessment of erosion processes, the detailing of mapping categories, and the use of the soil alkalinity indicator. The corresponding recommendations are suggested.
Underground mining hazard map including building site categories in an area affected by underground mining activities
The objective of the paper is generation of an underground mining hazard map. The method applied to create the map is based on five categories of areas with different characters of underground mining influence making use of the so-called building site categories. The individual areas with different groups represent various suitability or unsuitability for founding new structures in such influenced territories. They will also reflect a higher or lower degree of influence on already existing structures.