Young Stand Monitoring applied in the Morice TSR R. de Jong CSC Winter Workshop
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Transcript of Young Stand Monitoring applied in the Morice TSR R. de Jong CSC Winter Workshop
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Young Stand Monitoring applied in the
Morice TSR
R. de JongCSC Winter Workshop
27 February 2014
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Assessment of Mid-rotation StandsStand Development Monitoring
(SDM)
• To assess Timber Objective of FRPA (FREP)– To change Legislation if required– To change PRACTICE if required
• Stand Level assessment – 10 plots per polygon, summarized per TSA
Young Stand Monitoring (YSM)
• To assess TRENDS of young stands relative to TSR assumptions and adjust (FAIB)
• Management Unit assessment – permanent sample plots established on a grid over the target population
∆ Leg and Practice ∆ TSR
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Morice YSM Program
• Established 2012• 50 * 0.04ha plots• Grid Based• Unbiased estimate of
15 – 50 year old target population
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Objectives
• Describe Young Stand Characteristics• Assess Accuracy of Inventory Polygons• Assess Accuracy of Site Index Estimates• Check on TSR Assumptions• Localize MSYTs using YSM data
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Describe Stand CharacteristicsComposition
Status # Species Comp by BA BA (m2/ha)
SPH (#/ha)
DBHq (cm)
WSV (m3/ha)
NMV (m3/ha)
m2/ha #/ha cm m3/ha m3/haLive 50 PL(60)SX(20)BL(13)DEC(7) 20.6 1,951 11.6 108 65Dead 50 PL(39)SX(0)BL(7)DEC(3)XC(50) 1.1 64 14.5 6 4
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Describe Stand CharacteristicsStructure
Stand Table - Live Stock Table - Live
0%
10%
20%
30%
40%
50%
60%
% o
f tot
al st
ems/
ha
DBH class (cm)
PA
HM
SX
PL
BL
DEC
0%10%20%30%40%50%60%70%80%
% o
f tot
al m
3/ha
DBH class (cm)
PA
HM
SX
PL
BL
DEC
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Describe Stand CharacteristicsForest Health
Live Dead
0%5%
10%15%20%25%30%35%40%
O U DSG
IAG
IAS
AM NX NGC
DSA
DS
% o
f tot
al B
A (m
2/ha
)
Damage Agent 1
PA
HM
SX
PL
BL
DEC
0%10%20%30%40%50%60%70%80%
NB U O IBM
AD IAG
DS NW
% o
f tot
al B
A (m
2/ha
)
Damage Agent 1
XREM
SX
PL
BL
DEC
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Assess Accuracy of Inventory PolysObserved vs. VRI Species Composition
0%
10%
20%
30%
40%
50%
60%
70%
DEC BL PL SX HW HM XC
Spec
ies p
erce
nt
Species
GRD
VRI
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Assess Accuracy of SI EstimatesObserved vs. Provincial Site Prod Tile
0
5
10
15
20
25
AT BL PL SX
Site
Inde
x (m
)
Site Tree Species
Grd
Prd
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Check on TSR AssumptionsTIPSY MSYTs @ each Sample Point
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0 10 20 30 40 50 60
Net
Mer
ch V
olum
e (m
3/ha
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Total Age
GrdPrdAvg MSYT
# Ground Samples
MSYT Volume
Ground Volume
Difference(m3/ha)
50 27 48 21
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Localize MSYTs with YSM Data
Characteristic Impact Applied inSite index Base
Assumption
Species mix Base Assumption
Forest health Alternate Scenario
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Localize MSYTs with YSM DataSite Index Adjustment
• TSR-based SI underestimated compared to ground-based site index.
• Action: apply site index adjustment by species
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Localize MSYTs with YSM DataSpecies Composition
• YSM ground species mix vs. TSR assumptions• Action: Apply YSM species mix by AU
Scenario Species Percent by THLBHWD BL PL SX Total
YSM species mix 1 13 60 25 100
TSR Existing Assumptions 1 27 46 26 100TSR Future Assumptions 0 1 40 59 100
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Localize MSYTs with YSM DataForest Health Impact
• Worst-case FH scenario assumes all stem rust affected Pine will die at rotation.
• Action: Apply incremental OAF1 in Pine dominated regimesData Source % of Total SPH
(host species)% of Total SPH
(all species)% of Total BA (all species)
RESULTS 10 SDM 21 16 YSM 25 15 16
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Pine Med AU – Site Index
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Pine Med AU – Species mix
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Pine Med AU – Forest Health
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Pine Med AU – Combined Impact
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Morice TSR Scenarios
Scenario Era Managed Stand Yield TableBase Case Run
Existing Managed Stands YSM (SIA + species)
Future Managed Stands 2013 Data Package regimes
Alternate Scenario Run
Existing Managed Stands YSM (SIA + species + FH)
Future Managed Stands YSM (SIA + species + FH + GG)
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Summary
• YSM to describe young stand population• YSM as a check on TSR assumptions, both
current and future stands• YSM to generate localized MSYTs• YSM to support alternative modeling scenarios
with measured data (forest health)• Future YSM data to include change (growth /
mortality)