Påverkan från den förväntade klimatförändringen på tillväxten i norra Sveriges skogar
En litteraturanalys
… of increased temperature, ricing CO2level in the atmosphere andincreased nitrogen in the soil gives an increase in growth rate of about 15 %.
206 uppsatser · sida 12 av 14
En litteraturanalys
… of increased temperature, ricing CO2level in the atmosphere andincreased nitrogen in the soil gives an increase in growth rate of about 15 %.
… calcareous fens, whilst arable land usually is highly fertile and limited by nitrogen. The purpose of this study is to bring forth useful knowledge for restoring the degraded calcareous fen of Hagebyhöga. Phytometric assessments have been conducted on samples from the ground …
… study. The test organism that performed the closest to Chlorella in terms of nitrogen uptake was water hyacinth with an uptake about 1602mg/m2/d. One factor affecting nutrient uptake in a positive way is the growth rate. Free-floating macrophytes produce more biomass than algae …
EN TEKNISK-, EKONOMISK- OCH MILJÖMÄSSIG UTVÄRDERING
Avloppsreningsverket i Hallsberg kommun är beläget i direkt anslutning till Hallsberg, med Ralaån som recipient. Tekniken på reningsverket bygger på principerna för en klassisk aktivslamanläggning med mekanisk rening, kemisk rening, biologisk rening och en slambehandling där …
… of various parameters on the survival rate of human semen frozen with liquid nitrogen. The parameters investigated were thawing method (incubator or water bath) and container choice (straw or ampoule). In addition, two different cryoprotectants were tested.The method used was …
… showed a change in physiological soil microbial profile after addition of nitrogen (N), K, Mg and the fully fertilized treatment. These four treatments also gave significantly higher soil electric conductivity than the other treatments, as did the fully fertilized treatment in …
… of reactions following from the contact of condensedwater and sulphur- and nitrogen-oxides which are also present in the flue gas.This report compiles and evaluates the basis of a scientific unit with the purpose ofexploring the possibilities of extracting impurities of SOx and …
… of reactions following from the contact of condensedwater and sulphur- and nitrogen-oxides which are also present in the flue gas.This report compiles and evaluates the basis of a scientific unit with the purpose ofexploring the possibilities of extracting impurities of SOx and …
En litteraturstudie och rötning i labbskala
… gas composition, content of dry matter and organic matter, carbon / nitrogen-ratio and pH have been performed.The results from lab scale digestion show that the pea residue has a methane potential of 300-400 liters of methane per kg VS during 25 days of anaerobic mesophilic …
… for nitrate, phosphate and chlorophyll. The sediments were analyzed for nitrogen, phosphorus, water and organic level and the benthic organisms were determined to species when possible. The levels of nitrate, phosphate and chlorophyll were correlated with each other but also …
… for nitrate, phosphate and chlorophyll. The sediments were analyzed for nitrogen, phosphorus, water and organic level and the benthic organisms were determined to species when possible. The levels of nitrate, phosphate and chlorophyll were correlated with each other but also …
Effekter av jordbruk på akvatiskt tillflöde till land vid norrländska bäckar
… and forest streams, respectively. Nematocera alone can potentially supply more nitrogen in a month than background deposition provides per year. The effect of agriculture on emerging aquatic insects, and in extension on riparian zone, is evident.
Resurseffektiv kvävereduktion genom nitritation Problematiken med övergödning i våra akvatiska system har lett till hårdare krav på kväverening vid våra reningsverk. En rejektvattenbehandling har visat sig vara ett bra alternativ för att utöka kvävereningen. Vid Nykvarnsverket i …
… problem and implies an enrichment of the nutrients phosphorus (P) and nitrogen (N). Phosphorus is considered to be the most important component for the growth of aquatic plants and leads in too large quantities to an intensification of growth. Phosphate (PO4) is the fraction of …
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 …