UK Research on The Eutrophication and Acidification of Terrestrial Ecosystems

Modelling:

Some capacity to predict the decline and recovery of biodiversity in response to changes in nitrogen pollution has been developed by linking the FRAME deposition model via the MAGIC soil chemistry model to the GBMOVE species occurrence model. Biogeochemical processes are simulated dynamically, but the habitat suitability for each species is obtained from static relationships with abiotic environmental factors, derived from census data. A model chain forecasting plant species occurrence from soil chemistry dynamics and pollutant deposition will be extended to include modules for plant growth and vegetation management and succession (Fig. 1). Development and application of the MAGIC model is embedded in the Critical Load and Dynamic Modelling Umbrella (CLDMU).

 

 

modelling framework

Fig 1: Modelling framework under development within the Terrestrial Umbrella and Critical Load Dynamic Modelling Umbrella.

This approach will be extended to consider effects of local species pools. To better predict the effects of plant competition and shading, a major driver of changes in species composition, the model chain will be extended by including a plant growth module (based on PnET) and a management / succession module (based on SUMO). An improved decomposition module will be developed for this model chain under the Dynamic Modelling Umbrella. Standards for describing model structure and data passes will be used, to allow dynamic feedbacks to be incorporated into the model chain.

 

Page last modified: 09/11/2010
Page published: 27/08/2010