how can we incorporate considerations of trees and environmental benefits into community and site...
DESCRIPTION
How Can We Incorporate Considerations of Trees and Environmental Benefits into Community and Site Development Planning? T. Davis Sydnor, The Ohio State University Developers often clear cut any existing vegetation on a site before development begins and replant later with 2-inch trees. Considering which trees to retain, evaluating some of the commonly overlooked development costs, and determining future environmental benefits that would be lost can lead to a more environmentally responsible development. Additionally recovering, deferring or retaining benefits may lower initial development costs as well as long term living and maintenance expenses.TRANSCRIPT
Incorporating Considerations of Trees
and Environmental Benefits into the Planning
Process?
ByT. Davis Sydnor
Professor EmeritusSchool of Environment and Natural Resources
The Ohio State [email protected]
614-738-0667
Original concernWe are “always” asked for comments after the planting fails to meet the original design intent.
When should we try to intercede?
Resistance to change starts here
Resistance to Change
Idea Concept Plan Implementation Acceptance0
5
10
15
20
25
30
35
40
Enter the One Framework Plan
Some university constraints
LEEDOhio State will be carbon neutral by 2050
Let’s consolidate academic programs
Campus should be pedestrian
Columbus mandated to deal with
stormwater and water quality
No net gain in academic space
Now (left) and Proposed (right)
Buckeye Village today
Now (left) and Proposed (right)
We have an inventory….
When should we intercede ?
Report sent from Chadwick Arboretum to OSU FOD
Planning and Real Estate
Estimated Expenses for Removal and Replacement of Trees in the Area Slated for the Athletic Complex Development
SIZE NUMBERREMOVAL
COSTS PER TREE
REMOVAL TOTALS
REPLACEMENT COST/TREE
(2-in)
REPLACEMENT TOTALS
REMOVAL AND REPLACEMENT
1-3 28 $100 $2,800 $290 $8,120 $10,920
3-6 123 $375 $46,125 $290 $35,670 $81,795
6-12 136 $375 $51,000 $290 $39,440 $90,440
12-18 125 $675 $84,375 $290 $36,250 $120,625
18-24 87 $675 $58,725 $290 $25,230 $83,955
24-30 40 $1,290 $51,600 $290 $11,600 $63,200
30-36 20 $1,625 $32,500 $290 $5,800 $38,300
36-42 9 $2,150 $19,350 $290 $2,610 $21,960
TOTALS 568 $346,475 $164,720 $511,195
Landscape Values of 568 Existing Trees in the Area Slated for Development into the Athletic Complex.
SIZE NUMBER BASIC VALUE
SPECIES VALUE
CONDITION VALUE
LOCATION VALUE
LANDSCAPE VALUE EACH
LANDSCAPE VALUE
1-3 (2) 28 $205 0.80 0.80 0.80 $105 $2,939 3-6 (5) 123 $750 0.80 0.80 0.80 $384 $47,232
6-12 (9) 136 $2,170 0.80 0.80 0.80 $1,111 $151,101 12-18 (15) 125 $4,100 0.80 0.80 0.80 $2,099 $262,400 18-24 (21) 87 $6,570 0.80 0.80 0.80 $3,364 $292,654 24-30 (27) 40 $9,630 0.80 0.80 0.80 $4,931 $197,222 30-36 (33) 20 $13,300 0.80 0.80 0.80 $6,810 $136,192 36-42 (39) 9 $17,100 0.80 0.80 0.80 $8,755 $78,797 TOTALS 568 $1,168,538
Annual environmental benefits Benefits Total ($) $/tree Stormwater $21,483 $38 Aesthetic/Other $21,312 $38 Energy $16,390 $29 Air Quality $2,439 $4 CO2 $2,088 $4 Total Benefits $63,712 $112
Additionally there is more
than 2,000,000 pounds of
currently stored carbon in
existing trees
Annual Environmental Benefits for Years 1-75 and Cumulative Benefits for Three, Selected Twenty-five Year Segments
YEAR ANNUAL BENEFITS YEAR ANNUAL
BENEFITS YEAR ANNUAL BENEFITS
1 $2,937 26 $14,118 51 $67,8412 $3,129 27 $15,033 52 $72,2373 $3,331 28 $16,008 53 $76,9184 $3,547 29 $17,045 54 $81,9025 $3,777 30 $18,149 55 $87,2096 $4,022 31 $19,325 56 $92,8607 $4,282 32 $20,578 57 $98,8788 $4,560 33 $21,911 58 $105,2859 $4,855 34 $23,331 59 $112,107
10 $5,170 35 $24,843 60 $119,37211 $5,505 36 $26,453 61 $127,10712 $5,862 37 $28,167 62 $135,34413 $6,242 38 $29,992 63 $144,11414 $6,646 39 $31,935 64 $153,45315 $7,077 40 $34,005 65 $163,39616 $7,535 41 $36,208 66 $173,98417 $8,024 42 $38,555 67 $185,25918 $8,544 43 $41,053 68 $197,26319 $9,097 44 $43,713 69 $210,04620 $9,687 45 $46,546 70 $223,65721 $10,315 46 $49,562 71 $238,15022 $10,983 47 $52,774 72 $253,58223 $11,695 48 $56,193 73 $270,01424 $12,452 49 $59,835 74 $287,511
25 $13,259 50 $63,712 75 $306,142YEARS 1-25 $172,534 YEARS 25-50 $829,045 YEARS 50-75 $3,983,629
Results• Report now appended to development plans
• OSU will try to move plants smaller than 8 inch
• Will consider trees greater than 22 inch when siting buildings
Will it be easier to find such sites?