Sökning: "kväveflöden"

Visar resultat 1 - 5 av 7 uppsatser innehållade ordet kväveflöden.

  1. 1. Swedish Nitrogen Flows : A national budget of anthropogenically induced reactive nitrogen

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Vincent Lernbecher; [2021]
    Nyckelord :;

    Sammanfattning : Nitrogen is a fundamental element in all forms of life and a crucial component of our agricultural productivity and global food security. However, excess nitrogen caused by human activity poses a serious threat to the environment and human health. LÄS MER

  3. 2. Estimations of anthropogenic nutrient flows at the coral reef island Ko Sak, Thailand : A simplified source flow analysis

    Kandidat-uppsats, KTH/Industriell ekologi

    Författare :Emelie Lindström; Adam Engström; [2016]
    Nyckelord :;

    Sammanfattning : High levels of nutrients in tropical coastal areas is a big problem and poses large threats to coral reefs. Therefore this study will focus on nutrient flows from a source perspective. The aim of this study is to identify and quantify the phosphorus and nitrogen emissions from human activities at the island Ko Sak, Thailand. LÄS MER

  4. 3. Nitrogen flow in Scania : substance flow analysis on a regional level

    Master-uppsats, SLU/Dept. of Energy and Technology

    Författare :Johanna Hellstrand; [2015]
    Nyckelord :substance flow analysis; fertilizer; sewage sludge; wastewater; urine separation; manure;

    Sammanfattning : In this thesis, the flows of reactive nitrogen (Nr) in Scania were investigated and quantified. The thesis was also intended to form a basis for comparison between the urban nitrogen flow and other flows of nitrogen within Scania. The management of nitrogen in society has disturbed the natural nitrogen cycle. LÄS MER

  5. 4. Water balance and nitrate leaching from arable land in a changed climate : a model study

    Magister-uppsats, SLU/Dept. of Soil and Environment

    Författare :Therése Nanos; [2011]
    Nyckelord :climate change; water balance; nitrate leaching; crop growth;

    Sammanfattning : This thesis aims to present the essential background on how to perform climate changeimpact assessments, and to present the results from a climate impact assessment on waterbalance and nitrate leaching for an arable Swedish soil. The soil is a sandy soil in southwesternSweden, grown with spring cereals. LÄS MER

  7. 5. Kväveförluster och energianvändning på mjölkgårdar i västra Sverige

    L3-uppsats, SLU/Dept. of Animal Nutrition and Management

    Författare :Veronica Carlsson; [2003]
    Nyckelord :miljönyckeltal; ekologisk produktion; konventionell produktion;

    Sammanfattning : Protecting the environment has with time grown to take a more central role in the society. Agriculture plays an important role in the society since this sector produces our food. More thorough research on how agriculture affects the environment is therefore motivated. LÄS MER