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Displaying 1036 - 1040 of 1605Modelling landscape complexity for land use management in Rio de Janeiro, Brazil
Prioritizing land units for environmental management and planning is central in any process aiming at the improvement of urban and environmental conditions. In this study, an algebraic method (lattice theory) was applied to data describing the characteristics of ten land units of a landscape of Rio de Janeiro, Brazil. Consequently, landscape complexity was modeled and land units were prioritized for land management.
Effects of land use, land cover and rainfall regimes on the surface runoff and soil loss on karst slopes in southwest China
Surface runoff and soil loss from 2007 to 2010 related to land use and rainfall regimes in karst hill slopes in Guizhou Province, southwest China, were analyzed. Using the hierarchical clustering method, sixty-one rainfall events under the subtropical monsoon climate condition were classified into 5 types of rainfall regimes according to the depth, maximum 30-min intensity, and duration of rainfall.
Policy options to enhance agricultural irrigation in Afghanistan: A canal systems approach
In Afghanistan, where 80% of the population is rural, irrigated agriculture using surface water is an extremely important economic activity. With the advent of the New Water Law, highly localized and centuries-old agricultural water management traditions are giving way to more modern centralized institutions. The newly-created river basin councils need management tools to support decision-making at the watershed level.
How attractive are short-term CDM forestations in arid regions? The case of irrigated croplands in Uzbekistan
This study analyzed the financial attractiveness of Clean Development Mechanism Afforestation and Reforestation (CDM A/R) in irrigated agricultural settings. The Net Present Value (NPV) and Internal Rate of Return (IRR) of CDM A/R were estimated by analyzing the case of Khorezm region in Uzbekistan, where a mixed-species tree plantation was established on marginal cropland. The dual purposes of carbon sequestration and production of fruits, leaves as fodder, and fuelwood were studied over a seven-year rotation period.
Land use changes on the slopes of Mount Elgon and the implications for the occurrence of landslides
A reconstruction of land use changes and the implications thereof for landslide occurrence on critical slopes of Mount Elgon in Eastern Uganda were undertaken. Aerial photographs taken in 1960 formed the benchmark for the analysis of respective land use changes between 1995 and 2006, using 30m Landsat TM and 20m SPOT MS images. Landslide sites were mapped using a MobileMapper, and terrain parameters were derived using a 15m Digital Elevation Model.