Essays about: "DGVM"

Showing result 6 - 7 of 7 essays containing the word DGVM.

  1. 6. Effects of human land-use on the global carbon cycle during the last 6000 years

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Jörgen Olofsson; [2006]
    Keywords : dynamic global vegetation model DGVM ; human land-use; holocen; kolcykeln; jordbruk; avskogning; markanvändning; dynamisk global vegetationsmodell DGVM ; deforestation; agriculture; carbon cycle; holocene; Earth and Environmental Sciences;

    Abstract : Humanity has become a major actor within the Earth system, particularly through transforming large parts of the land surface and by altering the gaseous composition of the atmosphere. Deforestation for agricultural purposes started thousands of years ago, which might have resulted in a detectable human influence on climate much earlier than the industrial revolution. READ MORE

  2. 7. How does elevated atmospheric CO2 concentration affect vegetation productivity? : a study based on Free Air CO2 Enrichment (FACE) experiments and two generalised vegetation models

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Kristina Mjöfors; [2005]
    Keywords : naturgeografi; climatology; cartography; pedology; CO2 exchange; photosynthesis; koldioxidutbyte; climate change; fotosyntes; klimatförändring; geomorphology; physical geography; geomorfologi; marklära; kartografi; klimatologi; Earth and Environmental Sciences;

    Abstract : Increasing levels of CO2 in the atmosphere may substantially increase net primary productivity (NPP) and thereby increase carbon sequestration by terrestrial ecosystems. Realistic Free Air Carbon Enrichment (FACE) experiments tend to show a NPP enhancement of about 25% if CO2 is elevated by 200 ppm. READ MORE