Sökning: "Past Human Land Use"
Visar resultat 1 - 5 av 32 avhandlingar innehållade orden Past Human Land Use.
1. Change and Persistence in a Reformed Landscape : A geographical analysis of land reforms and landscape change in Muhu and Rapla municipalities, Estonia, c. 1840 to 2003
Sammanfattning : A land reform is usually introduced to create conditions for change, either in agriculture or in the character of landownership. Since the middle of the 19th century, numerous radical land reforms have been implemented in rural Estonia, often at times of political and social upheaval. LÄS MER
2. Reconstruction of Past European Land Cover Based on Fossil Pollen Data : Gaussian Markov Random Field Models for Compositional Data
Sammanfattning : The aim of this thesis is to develop statistical models to reconstruct past land cover composition and human land use based on fossil pollen records over Europe for different time periods over the past 6000 years. Accurate maps of past land cover and human land use are needed when studying the interaction between climate and land surface, and the effects of human land use on past climate. LÄS MER
3. Anthropogenic influence on climate through changes in aerosol emissions from air pollution and land use change
Sammanfattning : Particulate matter suspended in air (i.e. aerosol particles) exerts a substantial influence on the climate of our planet and is responsible for causing severe public health problems in many regions across the globe. LÄS MER
4. Hydro-climatic changes in irrigated world regions
Sammanfattning : Understanding of hydro-climatic changes in the world’s river basins is required to ensure future food security. Different regional basins experience different levels of hydro-climatic change depending on the endorheic or exorheic nature of a hydrological basin, along with the climatic conditions and human land and water-use practices, for instance for irrigation. LÄS MER
5. Acidification trends in Swedish lakes : an assessment of past water chemistry conditions using lake sediments
Sammanfattning : This thesis presents temporal perspectives of lake acidification in Sweden. Sediment records have been used to study timing, trends and causes of acidification, and two different techniques for assessing past lake-water acidity are presented. LÄS MER
