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LANDIS Model Landscape Ecology (UT) April 18, 2005 Jiquan Chen

LANDIS Model Landscape Ecology (UT) April 18, 2005 Jiquan Chen.

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LANDIS Model Landscape Ecology (UT) April 18, 2005 Jiquan Chen

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  1. LANDIS Model Landscape Ecology (UT) April 18, 2005 Jiquan Chen Reading: Mladenoff, D. J., and H. S. He. 1999. Design and behavior of LANDIS, an object-oriented model of forest landscape disturbance and succession. In D. J. Mladenoff and W. L. Baker (editors), Advances in spatial modeling of forest landscape change: approaches and applications. Cambridge University Press, Cambridge, UK. Lab Exercise: April 20 (Wed), 9:30 – 11:45 a.m. Bring your laptop!

  2. Introduction LANDIS is a spatially explicit model designed to simulate forest landscape change over large spatial and temporal domains (Mladenoff et al. 1996, Mladenoff and He 1999). The major modules of the LANDIS model are forest succession, seed dispersal, wind and fire disturbances, and harvesting.

  3. LANDIS is based on an object-oriented modeling approach operating on raster GIS maps; • Each cell is a spatial object containing species, environment, disturbance, and harvesting information; • LANDIS simulates tree species as the presence or absence of 10-year age cohorts in each cell, not as individual trees; • LANDIS simulates multiple landscape processes in combination with the simulation of succession dynamics.

  4. #LANDIS parameter input file::High Fire Regime# species.dat #Species Vital Attributes File# landtype.dat #Landtype Attributes File# lu90.gis #landtype Map Input File in ERDAS 7.4 8/16 bits GIS# species90.gis #Species and age classes map in ERDAS 7.4 8/16 bits GIS# mapattrb.dat #Species and age classes attributes cooresponding to random.gis# mapindex.dat #output species/class map index# ageindex.dat #output species age map index# h:\HHe\project\project5\HighFire\output #Output directory# disturb.dat #Disturbance input file# default.plt #LANDIS internal file# freq_out.put #output frequency management file# 20 #Number of iterations# 0 #Random number seed,0--multi-random series 9257# 90 #Cell size in meters# DISPERSAL #Seed dispersal routine# 1 #flag of wind. 0-no;1-standard# 1 #flag of fire, 0-no;1-standard# 0 #flag of harvesting, 0-no; 1-on DISABLED# 1 #flag of harvesting event, 0-no; 1-on# 1 #Stand adjacency flag (0=off, 1=on). Don't harvest stand if a neighbor was "recently harvested".# 1 #n=decade span: Consider an adjacent stand "recently harvested" if the proportion# 0.5 #p=proportion: of cells cut in the last n decades is at least p.# harvest.dat #Harvest event file# st90.gis #Stand identifier input map file# rsrvmng16.gis #Management area identifier input map file usually rsrvmng8.gis# stands.log #Harvest stand output file# ma.log #Harvest management area output file#

  5. 1.1.1     APACK APACK is a spatial analysis statistics program. It performs various analyses on the GIS output files created by LANDIS. 1.1.1     LANDIS Viewer LV is a LANDIS Map Viewer. It runs in most graphic modes. LANDIS-II Webpage:http://landis.forest.wisc.edu/index_html 1.1.1     GIS2PS GIS2PS will convert Erdas 7.4 8-bit GIS files to color postscript files. 1.1.1     LANDIS Java Interface LANDIS Java interface allows a user to view and edit the parameter files needed by LANDIS for a model run.

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