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Betydelsen av antalet beviljade dispenser av stallgödselspridning vid Sagån
… and what implications it has for the eutrophication of Lake Mälaren. Sagån’s catchment area extends through Enköping, Sala, Heby, Västerås and Uppsala. Since 2000, 23 waivers of manure application have been granted, most of these deviations have occurred on snow-covered ground …
metodutveckling med GIS
… most likely due to the high percentage of lakes and forest within thecatchment, this method was considered not to be used.Several interesting areas have been identified inside the catchment. These shouldbe investigated in the field before any suggestion of measures can be …
… Based on a requested amount of energy was a pine and a spruce-dominated catchment chosen.Then the variable costs of transportation of merchandise from the offshoot to the terminal, for processing in the form of pelleting or chipping, as well as for rail transport from the …
en jämförelse mellan två alternativ
… Inventory we have taken out the size of the timber volume at each site and its catchment. We have also looked at possible competitors in the areas that may affect the purchase price of the commodity. From these data, we have been able to calculate transport distances and then …
vision och verklighet
… water shortage occurs in some areas during the summers. Three of the four main catchment areas on Gotland have unsatisfactory quantitative status, and is likely to have so also when the time limit of the next evaluation is due in 2015. Since both the population and tourism is …
… pollution risks were investigated in two ways. Firstly potential risks in the catchment area were identified through compiling previously reported information and map analysis. Secondly, possible accident scenarios from shipping were identified. Following this, SMHI simulated …
En fallstudie baserad på Uppsala kommuns vägnät
Att maximera sjukhusens och räddningstjänstens täckning av befolkningen är en viktig säkerhetsfråga som diskuteras inom bland annat hälsovårdsplaneringen. Geografiska informationssystem (GIS) kan användas som ett hjälpmedel för att analysera och presentera andelen befolkning som …
… Framework Directive has led that management follows the boundaries of natural catchments. The Swedish waters suffer from a nutrient overload that originates mainly from diffuse sources such as agriculture and the subcatchment of Hackstabäcken in Vallentuna Kommun, just north of …
… for all lakes in thestage-discharge equation gives large errors. The use of catchment areas, lake areas and outletwidths gave better results than applying constant standard parameters in stage-dischargeequations. The best method for estimating stage-discharge equations was …
… flow distribution of phosphate relationship works in an agricultural dominated catchment could a more cost efficient planning for choice of methods against leakage of the nutrient be achieved. The source and flow distribution of phosphate was therefore studied and a high …
en jämförelse mellan idag och 1970-talet
… percentage of impervious surfaces andrepresents the maximum percentage of a catchment that can contribute to runoff. In thisstudy, the objective was to evaluate the weighted runoff coefficient for three differenturban types; apartment buildings, townhouses and residential areas …
… work includes calculation of flows from the populated areas but also from the catchment area around it consisting of woodlands and fields. Because of expected climatic changes which may affect rainfall, the simulations have been performed with different return periods for …
HYPE-modellen utvecklades som ett hjälpmedel för att uppfylla målet om att alla svenska vattendrag ska ha uppnått åtminstone god ekologisk status år 2015, enligt EU:s ramdirektiv för vatten. I HYPE-modellen delas avrinningsområdet in i markklasser, som definieras utifrån …
… that largely is due to nutrient leaching from farmland within the catchment area. To solve this problem the surrounding countries cooperate within various configurations such as HELCOM and the EU-financed project Baltic Compass. Poor manure management in Russia has been …
… GIS and digital geographical data were used to analyse the landscape in subcatchments. This data were analysed together with stream water chemistry data by using principal component analysis. The results indicate differences between the north and south parts of the district. In …
