Spatially interactive simulation of climate change effects on forest composition and biomass in Korea with LANDIS-II
TERRECO Cluster S-05
From 11/2012Principal Investigator: Dongwook Ko, Sinkyu Kang
Staff: Sohee Kim
Abstract 2013: Forests are dynamic in both structure and species composition, and these dynamics are strongly influenced by climate. The LANDIS-II model simulates the forest-type composition response to future climatic change by modifying the species’ competitive and colonization ability. In the LANDIS-II model, the species’ competitive ability under future climate may change through modification of the growth rate determined by the aboveground net primary production (ANPP). The colonization ability may change through the modification of the species establishment probability (SEP), which defines the probability of seedling establishment (assumes no competition from other species) under a specific climate. The PnET-II model is used to provide the estimate of ANPP and SEP under future climate. The simulated ANPP and SEP in PnET-II are driven by climate variables including temperature, precipitation, CO2 and PAR. Ecoregion is a user defined sub-region of the total landscape that is assumed to have homogeneous soil and climate attributes. The combined model simulates disturbance (fire, wind, harvesting), dispersal, forest biomass growth and mortality, and inter- and intra-specific competition. We will use the model to quantify living biomass and dead biomass across the forest region. Where disturbance frequency is relatively high or successional processes long, the variable time steps may be a critical element for successful forest landscape modeling.
Keywords: Forest biomass, aboveground net primary productivity, succession, LANDIS-II, PnET-II
