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Displaying 621 - 625 of 1605Assessing the role of policies on land use change and agricultural development since 1960s in northern Ethiopia
Policy has long been considered as one of the major driving forces for land use change and agricultural development. However, a designated and in-depth study on its interaction with land use change and agricultural development is still very limited. The authors, therefore, attempted to address this issue by using five villages representing three agro-ecologies (highland, midland and lowland) for the period between 1965 and 2007. The study indicated that land policies of the imperial and communist regimes contributed largely to the increase of arable land while a decrease in vegetated land.
Pan-European distribution modelling of stream riparian zones based on multi-source Earth Observation data
Freshwater ecosystems are among the most degraded and threatened globally. A need for systematic assessment of riverine habitats is thus well-documented. Riparian zones are especially important due to the large array of ecosystem and social services they can provide, while also recently gaining a major role in the new European biodiversity policy. In this context, the necessity to gather spatial information on extent, distribution and characteristics of the riparian zones is clear.
tool for mapping and spatio-temporal analysis of hydrological data
There is a need in water sciences for computational tools to integrate large spatially distributed datasets to provide insight into the spatial and temporal domains of the data while allowing visualization, analysis in the spatial and temporal dimensions, data metrics, and pattern recognition in the same application. Spatial and temporal variability of hydrological processes as well as the associated phenomena transport is better represented in high spatio-temporal resolution datasets.
Assessing and mapping biomass potential productivity from poplar-dominated riparian forests: A case study
River systems are subjected to continuous physical changes as a result of their sediment transport. River dynamics is mainly determined by the seasonal variation of weather conditions and, together with the nature of the catchment and land management, affects flow patterns on a local scale. Riparian vegetation is well adapted to this periodical disturbance. It naturally regenerates on the new mineral soil created by the redistribution of river sediments during floods, playing an important role in the maintenance of streams and riverbanks stability.
Measuring transaction costs incurred by landowners in multiple land-use situations
This paper describes the development and implementation of a method to measure the transaction costs in situations of multiple land-use, where the actions of one actor have negative effects on the other and vice versa (i.e., where the two actors’ usage patterns are interdependent). In situations where more than one agent is using a limited resource, transaction costs arise, which may affect the governance of that resource. For example, in northern Sweden the forestry and reindeer husbandry sectors incur transaction costs during consultations over land-use management.