Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 402227
Title Feedbacks of vegetation change to surface energy balance and seasonal thawing of permafrost
Author(s) Blok, D.
Event IMPETUS 2007 - OSL - APECS - PYRN Training workshop, St. Petersburg, Russia, 2007-11-30/2007-12-02
Department(s) Nature Conservation and Plant Ecology
Publication type Abstract in scientific journal or proceedings
Publication year 2007
Abstract Terrestrial ecosystems affect climate through fluxes of energy, water and greenhouse gases. Changes in community composition and vegetation structure alter these fluxes, thereby potentially altering climate. Such vegetation feedback could contribute considerably to futre regional climate warming in the Arctic. Recent research mainly focused on vegetation-atmosphere interactions using eddy correlation to compare the surface energy balance among arctic ecosystems. However, vegetation-soil interactions which influence thawing depth have been much less studied, while permafrost thawing has the risk of releasing massive amounts of CO2 and CH4 into the atmosphere. We expect that a shift from moss- to shrub-dominated vegetation, which is already widely occurring in tundra ecosystems, will lead to a positive feedback further increasing local warming and permafrost thawing. In this project we will determine the effects of plant functional types, such as mosses, shrubs and grasses, on the surface energy balance and permafrost thawing. This requires a combination of field observations and experiments in order to disentangle vegetation effects from soil/climate effects. The resulting knowledge of the direct effects of vegetation changes will be incorporated in the ecosystem model NUCOM. This is a further step towards a regional vegetation-permafrost-c
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