Load data needed for plotting

## Loading objects:
##   Future.stat.dt
Total biomass (Mt)
crop.name 0 kg/ha 20-30 kg/ha 60-70 kg/ha 100-110 kg/ha
willow 0.5970252 1.650777 2.1179895 2.2417869
poplar 0.0534172 0.148672 0.2406739 0.3343974
switchgrass 2.4274965 19.959480 37.4404059 47.3956948
miscanthus 2.9963596 14.229617 37.9311357 53.0471600
Total area (ha)
crop.name 0 kg/ha 20-30 kg/ha 60-70 kg/ha 100-110 kg/ha
willow 4414140 4414140 4414140 4414140
poplar 1222513 1222513 1222513 1222513
switchgrass 30964056 31010716 31010716 31010716
miscanthus 17661828 17661828 17661828 17661828

Produce stacked environmental supply curves showing production cost levels

Results are shown for four cost classes (quartiles) and three crop categories. Biomass supply is stacked with the least-expensive supply on the bottom and the most expensive on top.

One of two methods can be used: Method 1: Area plots represent stacked supply for a series of water quality change thresholds (x-axis)

Method 2: Area plots represent cumulative loading reduction versus cumulative biomass supply