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Displaying 1056 - 1060 of 1605Ecological 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.
Development of Variable Threshold Models for detection of irrigated paddy rice fields and irrigation timing in heterogeneous land cover
Accurate monitoring of irrigated paddy field area and irrigation timing are of a great concern in agricultural water management due to the substantial consumption of fresh water when irrigating paddy fields. Spectral threshold methods (Xiao et al., 2005) have been widely applied to detect irrigated paddy fields and irrigation timing using Moderate Resolution Imaging Spectroradiometer (MODIS) Enhanced Vegetation Index (EVI) and Land Surface Water Index (LSWI). These methods applied constant additive threshold values (T) to LSWI and compared it to EVI to detect the irrigated paddy fields.
Urban agriculture and land use in cities: An approach with the multi-functionality and sustainability concepts in the case of Antananarivo (Madagascar)
Urban planners are increasingly interested in agriculture around cities and have to decide whether to maintain or not areas of agricultural land use within and close to growing cities. There is therefore a need for researchers to design tools to guide public decision-making on land use. Various approaches, originating from different disciplines, may be adopted in this respect. We designed an interdisciplinary research program in order to test two related concepts: the “sustainability” and the “multi-functionality” of agriculture.
potential of land conservation agreements for protection of water resources
A survey of landowners assessed the feasibility of long-term land conservation agreements for water resource protection. Such a private conservation tool is yet to be established in the UK, but innovation by an environmental charity seeks to mitigate the impacts of diffuse pollution from agriculture on water quality. Under the agreements a one-off payment would be made for agreed restrictions on use of targeted areas of farmland.
Carbon management of commercial rangelands in Australia: Major pools and fluxes
Land-use emissions accompanying biomass loss, change in soil organic carbon (ΔSOC) and decomposing wood-products, were comparable with fossil fuel emissions in the late 20th century. We examine the rates, magnitudes and uncertainties for major carbon (C) fluxes for rangelands due to commercial grazing and climate change in Australia. Total net C emission from biomass over 369Mha of rangeland to-date was 0.73 (±0.40)Pg, with 83% of that from the potentially forested 53% of the rangelands. A higher emission estimate is likely from a higher resolution analysis.