Exercise 5: 3-PG Workshop Special Topics

 

 

 

 

  1. Compare differences in species response (E. globules, Pi po, Ps me)  under a standard specified climatic and soil conditions. Plot differences in LAI and MAI over a rotation of 30 years.

 

2    Evaluate the extent that differences in temperature responses might account for annual variation in MAIx by varying Tmin and by setting average temperature for all months at the optimum.

 

 

  1. Evaluate effects of changing available soil water (100-300mm) and soil texture (sand vs clay) on LAIx and MAIx at Bariloche. Also evaluate minimum soil water recorded throughout the year (3PG-Results, or as specified output).

 

 

  1. Compare effect of changing maximum age effect at Bariloche pi po from 200 years to 50 years.

 

     5.    Using 3PG-Results at monthly time steps, manipulate FR and ASW to maintain

            similar values of MAIx and LAIx.  Plot shifts in the monthly patterns of GPP and

            transpiration.

 

 

  1.  Evaluate Silvicultural Treatments as indicated in Series1 example for Bariloche

       ponderosa pine.

 

  1. Perform a climatic sensitivity analysis at Bariloche by (a) setting frost days to zero, (b) doubling precipitation each month, (c) reducing precipitation by half each month. (d) setting average temperatures values each month to 20oC (optimum).

 

  1. Increase soil fertility from 0 to 1.0  at 0.2 steps for Wind River,Bariloche, or Loblolly pine (control); compare estimates of total allocation of carbon to root production with increase in FR and also the ratio of above-ground dry matter production to below-ground production.

 

 

BE PREPARED TO EXPLAIN YOUR OBJECTIVES AND SHOW

SUMMARY GRAPHS OF YOUR PROJECT TO OTHER MEMBERS OF THE CLASS.