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Displaying 316 - 320 of 1605Revisiting the forest transition theory with historical records and geospatial data: A case study from Mississippi (USA)
This study examines forest change processes, within the framework of forest transition theory (FTT), using Mississippi (USA) as a case study. The aim is to evaluate the assumption and theoretical basis of FTT with quantitative data, and to propose changes in forest management policy as a potential driver for reforestation. We compiled a number of historical records, geospatial data, and time series forest mapping products to reconstruct the last 100 years of forest trajectory. Forest changes are studied in relation to changes in society, over a range of temporal and spatial scales.
Environmental determinants of the spatial distribution of Alaria alata in Hungary
Alaria alata is a potential zoonotic parasite, which is widely distributed in Eurasia. To assess the risk of human infection, it is important to know the spatial distribution pattern of the parasite and factors influencing this pattern. To investigate these relationships, 1612 red fox (Vulpes vulpes) carcasses were randomly collected from the whole Hungarian territory, and the intestines were examined by sedimentation and counting technique. The spatial distribution of the parasite was highly clumped.
Markets for forestland use rights: A case study in Southern China
Although China still holds land in collective and state ownership, land use rights have been largely privatized. While transactions for forestland use rights have taken place for more than two decades, few detailed investigations of the transactions have been conducted. This study investigates 222 households in eight villages of Linan and Anji counties located within Zhejiang Province, and reports details of the transactions, their scope and motivation, and the characteristics of households participating in the market for forestland use rights.
Complex transformation of the geomorphic regime of channels in the forefield of the Moravskoslezské Beskydy Mts.: Case study of the Morávka River (Czech Republic)
This paper presents a complex analysis of both the contemporary and the historic development of the geomorphic regime of the transformed reach of the Morávka River in the Czech Carpathians. The assessment concentrates on the conditions and causes of the channel development in the last c. 200years compared with the state of European channels, especially those of the Carpathian zone. The Morávka R. pattern has undergone a rapid change in the last 50years, particularly in connection with the active channel narrowing and massive incision.
Impacts of reforestation upon sediment load and water outflow in the Lower Yazoo River Watershed, Mississippi
Among the world's largest coastal and river basins, the Lower Mississippi River Alluvial Valley (LMRAV) is one of the most disturbed by human activities. This study ascertained the impacts of reforestation on water outflow attenuation (i.e., water flow out of the watershed outlet) and sediment load reduction in the Lower Yazoo River Watershed (LYRW) within the LMRAV using the US-EPA's BASINS-HSPF model. The model was calibrated and validated with available experimental data prior to its application.