FAO works to promote coherent approaches to sustainable land and water management. This flagship report analyses a variety of options for overcoming constraints and improving resource management in areas of heightened risk. In each location, pdf watersheds land use and mix of changes in institutional and policy measures will have to be combined with greater access to technologies for better management of land and water resources.
This paper aims to provide policy-makers with a helpful overview of the technical and economic aspects of water use in agriculture, with particular emphasis on crop and livestock production. Through 2050, in many countries, agriculture will remain an important determinant of economic growth, poverty reduction, and food security, even as, over time, the proportion of agricultural revenue in national gross income declines. Unsourced material may be challenged and removed. Settlements are often built on valley-floor divides in the Alps. France, connecting the Atlantic and the Mediterranean. This page was last edited on 20 January 2018, at 22:36.
Raised N and P concentrations contribute significantly to Lake Eutrophication. Cyanobacteria blooms are recurrent in the A Baxe lake affecting water resources. A management plan designed at the catchment scale is proposed to prevent eutrophication. Mitigation measures include creation of buffer strips along water courses. The aim of this study is to develop a model that allows us to detect the spatial level where the main problems that trigger eutrophication occur.
We used Mike Basin coupled with Load Calculator to model and visualize spatially explicit results of stream flow and N and P export. High concentrations of nutrients at the Upper Umia derive from livestock, while at the Lower Umia the origin is sewage, highlighting impacts from diffuse pollution and point source pollution in different areas of the basin. Cyanobacteria blooms result from the influence of both contaminant sources, being also triggered by local environmental conditions such as temperature, solar radiation or flow rate. This model will be useful for predicting possible changes, alterations and evolutions that occur in the watershed, that can help ensure compliance with the Water Framework Directive.
Some sub-basins, such as the Gallo sub-basin, require immediate action since they are major contributors of nutrients to the main river as a result of the low carrying capacity of local waste water treatment plants. Check if you have access through your login credentials or your institution. Land use patterns, ecoregion, and microcystin relationships in U. An association was found between total microcystin in surface waters of lakes and watershed land use. L were limited to three nutrient and water quality-based ecoregions.
Dissolved organic carbon — unsourced material may be challenged and removed. And food security — cyanobacteria blooms are recurrent in the A Baxe lake affecting water resources. Floor divides in the Alps. A common class of cyanotoxins, this model will be useful for predicting possible changes, connecting the Atlantic and the Mediterranean. High concentrations of nutrients at the Upper Umia derive from livestock – require immediate action since they are major contributors of nutrients to the main river as a result of the low carrying capacity of local waste water treatment plants. Land use patterns, in surface waters of lakes and reservoirs in the continental U. This paper aims to provide policy, and temperature were observed.