1. Project Manager: Brietta Perez
Assistant Project Manager: Mujahid Hussein
GIS Analysts: Jeffrey Cuevas and Nick Waters

2. Tree Planting in Austin, Texas
An Analysis of the Austin Community Tree Program

3. Outline Introduction Task 1: Canopy growth and significance testing
Task 2: CO2 and energy benefit totals
Task 3: Extrapolation
Conclusion

4. Task 1: Canopy Growth Work Completed
Found the total canopy growth and reduction in the neighborhood planning areas as a whole
Reduction subtracted from growth to account for canopy that disappeared between 2006 and 2010
Percentage of 16.5% overall tree canopy growth from 2006 to 2010
Sample map of Old West Austin neighborhood

6. Task 1: Canopy Growth Current and Future Work
Current: plan visual representation, including data display and aesthetics
Future: finalize and implement consistent layout for each neighborhood in the map book, to include:
Map page for each neighborhood
Locator map
Neighbor labels

7. Task 1: Significance Testing
Find out statistically weather there is a significant increase in canopy growth
Wilcoxon Signed Rank Test
Paired sampling
Data not normally distributed
Two sample sets: areas of canopy extent in each neighborhood in and 2010
Critical value of 0.05
Final decision to be presented in the final deliverables

8. Task 2: CO2 and Energy Benefit Totals Work Completed
Total CO2 sequestered and energy conserved/delivery address/year:
Assumed 1 in. tree trunk diameter (National Tree Benefit Calculator)
CO2 or kWh * tree type (e.g. large broadleaf deciduous) = Total CO2 or kWh/address/year (e.g., Total Large Broadleaf Deciduous CO2 lbs. sequestered in one year at one address)
Total CO2 sequestered and energy conserved/delivery :
Initial data updated to 2014; added one year to total years in ground
(Years in Ground + 1) * Total CO2 or kW h/address/year = Total CO2 or kW h/address/
No longer conducting significance testing: necessary data unavailable

9. Task 2: CO2 and Energy Benefit Totals
Planning Area
Total CO2
in Pounds
Total Energy in kWh’s
Coronado Hills
8,696
3,532
Crestview*
27,540
10,800
East Cesar Chavez
7,580
3,400
East Congress
14,130
5,306
Franklin Park
10,890
4,524
McKinney
5,034
2,079
Montopolis*
25,152
10,590
N. Austin Civic Assn.
10,620
4,244
Old West Austin
10,152
4,293
Rosewood
14,448
5,008
St. John
2,016
880
Sweetbriar
9,982
3,724
West Congress
16,842
6,650
Wooten
9,020
3,270
Totals
173,034
68,657

10. Task 2: CO2 and Energy Benefit Totals Current and Future Work
Currently assessing best possible method for visually displaying benefit totals
Point symbols, graduated color
2 series of maps: delivery locations showing CO2 and kWh totals (natural breaks)
Finalize consistent layout for the CO2 and energy benefits sections of the map book, to include:
Number of ACT trees delivered within each planning area
Overall total lbs. and kWh’s as of 2015
Locator map
Neighbor labels

12. Task 3: Extrapolation
Performed extrapolation to find canopy growth representative of 2015 and 2025
Assumed a tree canopy growth of one square foot per year
Tree delivery data representative of 2014
Total amount of trees in a neighborhood multiplied by the field “years in ground” in order to assign a starting canopy extent value in square feet
Total canopy extent provided by ACT trees in 2014 was 20,405 ft2

13. Task 3: Extrapolation
One year = one square foot of canopy growth; can simply extrapolate by multiplying the number of years we want to predict
1 year was added to the “years in ground” field to represent 2015
Canopy extent in 2015 = 24,908 ft2
11 years were added to the “years in ground” field to represent 2025
Canopy extent in 2025 = 69,938 ft2

14. Extrapolation Results
Planning Area
Total Trees
Years in Ground (2014)
Years in Ground (2015)
Years in Ground (2025)
Canopy Extent (2014)
Canopy Extent (2015)
Canopy Extent (2025)
N. Austin Civic Association
749 1 2 12
749 ft2
1,498 ft2
8,988 ft2
Wooten
134 9 10 20
1,206
1,340
2,680
Crestview
408
3,672
4,080
8,160
St. John 68 3 4 14
204
272
952
Coronado Hills
307
921
1,228
4,298
Old West Austin
175 8 19
1,400
1,575
3,325
Rosewood
253 7 18
1,771
2,024
4,554
E. Cesar Chavez
231 5 15
924
1,155
3,465
Montopolis
598 6 16
2,990
3,588
9,568
McKinney 13
462
693
3,003
Franklin Park
497
994
1,491
6,461
East Congress
295 17
1,770
2,065
5,015
West Congress
347
2,082
2,429
5,899
Sweetbriar
210
1,260
1,470
3,570
Totals
4503
20,405 ft2
24,908 ft2
69,938 ft2
Future work will consist of adding extrapolation results per neighborhood planning area to the map book.

15. Time Table
Data processing actually completed very shortly after proposal presentation
Data analysis took four weeks rather than three because of the need to revise methodology and recalculate
In all, left with one week than initially planned for interpretation and production of deliverables
Week 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Starting Date 8/ 24 31 9/ 21 28
10/ 19 26
11/ 16
11/ 23
Data Collection
Data Preprocessing
Data Analysis
Interpretation and Deliverables

16. Conclusion On track to submit all deliverables by November 30, 2015
Question over which methodology to use for canopy growth extrapolation to balance accuracy and efficiency (time constraints)
Base on NTBC leaf surface area (LSA) calculation?
Base on assumption of 1 foot growth per year?
Decided to base on assumption of 1 ft. growth per year
No longer conducting significance testing for Task 2
Transitioning from data analysis to planning and implementing visual display
Map book in three parts: series of map pages featuring canopy growth, CO2 sequestration, and energy conservation

17. Questions?