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Displaying 1051 - 1055 of 1605Scale effects on the estimation of erosion thresholds through a distributed and physically-based hydrological model
Slope incision and subsequent development of rills, gullies and channels are responsible for significant soil losses and are often irreversible with very high restoration costs particularly in semiarid environments. The location of potential areas of erosion where these processes occur is vital to land management and conservation.
Spatially explicit land-use and land-cover scenarios for the Great Plains of the United States
The Great Plains of the United States has undergone extensive land-use and land-cover change in the past 150 years, with much of the once vast native grasslands and wetlands converted to agricultural crops, and much of the unbroken prairie now heavily grazed. Future land-use change in the region could have dramatic impacts on ecological resources and processes. A scenario-based modeling framework is needed to support the analysis of potential land-use change in an uncertain future, and to mitigate potentially negative future impacts on ecosystem processes.
Ecological restoration of degraded sodic lands through afforestation and cropping
Land degradation and their restoration are emerging issues all over the world for the environmental management. In this study, degraded sodic land was rehabilitated through afforestation and cropping for 50years.
Assessing the fragmentation of construction land in urban areas: An index method and case study in Shunde, China
The fragmentation of construction land due to decentralised urban development, disorderly mixed land use, and large-scale transportation infrastructure poses a threat to urban integrity. There is a need to quantify the fragmentation level in a consistent way for inclusion in planning-related decisions. In the context of China's urban sprawl, this study develops a quantitative and intuitive index approach that planners can use to analyse multiple fragmentation features of construction land within urban areas.
History and distribution of steepland gullies in response to land use change, East Coast Region, North Island, New Zealand
Following the clearance of indigenous forest (~1880s to 1920s) for pastoral use, actively eroding gullies had by the late 1950s become a pervasive form of erosion occupying 0.7% of the 7468km² of pastoral hill country within the East Coast Region, North Island, New Zealand. Commencing in the early 1960s the primary strategy used to stabilise gully and other associated forms of erosion on degraded pastoral hill country was to establish exotic forest.