Abstract
Landscape trees are planted in commercial parking lot medians to provide shade as well as to enhance landscape environmental aesthetics. However, expansive areas of asphalt and concrete surfaces surrounding parking lot medians might expose parking lot trees to high temperatures that reduce tree growth and aesthetic potential. We studied the effect of commercial parking lots on the size of established trees of Brachychiton populneus Schott & Endl., Fraxinus velutina Torr., Pinus canariensis Sweet ex K Spreng, Pinus halepensis Mill., Prosopis chilensis (Molina) Stuntz, and Ulmus parvifolia Jacq., in Phoenix, AZ, USA. During Summer 2001, tree size and temperatures of ground surfaces under and near tree canopies were evaluated in parking lot medians and adjacent perimeter landscape beds at 15 commercial parking lots. For all taxa, mean canopy volume, height, and diameter at breast height were reduced by 64, 32, and 37%, respectively, compared with trees of the same taxa in adjacent perimeter landscape bed. Overall, size of P. halepensis and U. parvifolia was most negatively affected by parking lot medians, while size of P. chilensis was least affected by parking lot medians. Average mid-day summer temperatures of asphalt surfaces under and near tree canopies in parking lot medians approached 60oC (140oF) and were as much as 27oC (49oF) higher than surface temperatures of vegetated and non-vegetated surfaces in adjacent perimeter landscape beds.
| Original language | English (US) |
|---|---|
| Title of host publication | Acta Horticulturae |
| Pages | 125-129 |
| Number of pages | 5 |
| Volume | 618 |
| State | Published - 2003 |
Publication series
| Name | Acta Horticulturae |
|---|---|
| Volume | 618 |
| ISSN (Print) | 05677572 |
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Keywords
- Asphalt
- Canopy volume
- Growth
- Heat stress
- Temperature
ASJC Scopus subject areas
- Horticulture
Cite this
Effects of commercial parking lots on the size of six southwest landscape trees. / Celestian, Sarah B.; Martin, Chris.
Acta Horticulturae. Vol. 618 2003. p. 125-129 (Acta Horticulturae; Vol. 618).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Effects of commercial parking lots on the size of six southwest landscape trees
AU - Celestian, Sarah B.
AU - Martin, Chris
PY - 2003
Y1 - 2003
N2 - Landscape trees are planted in commercial parking lot medians to provide shade as well as to enhance landscape environmental aesthetics. However, expansive areas of asphalt and concrete surfaces surrounding parking lot medians might expose parking lot trees to high temperatures that reduce tree growth and aesthetic potential. We studied the effect of commercial parking lots on the size of established trees of Brachychiton populneus Schott & Endl., Fraxinus velutina Torr., Pinus canariensis Sweet ex K Spreng, Pinus halepensis Mill., Prosopis chilensis (Molina) Stuntz, and Ulmus parvifolia Jacq., in Phoenix, AZ, USA. During Summer 2001, tree size and temperatures of ground surfaces under and near tree canopies were evaluated in parking lot medians and adjacent perimeter landscape beds at 15 commercial parking lots. For all taxa, mean canopy volume, height, and diameter at breast height were reduced by 64, 32, and 37%, respectively, compared with trees of the same taxa in adjacent perimeter landscape bed. Overall, size of P. halepensis and U. parvifolia was most negatively affected by parking lot medians, while size of P. chilensis was least affected by parking lot medians. Average mid-day summer temperatures of asphalt surfaces under and near tree canopies in parking lot medians approached 60oC (140oF) and were as much as 27oC (49oF) higher than surface temperatures of vegetated and non-vegetated surfaces in adjacent perimeter landscape beds.
AB - Landscape trees are planted in commercial parking lot medians to provide shade as well as to enhance landscape environmental aesthetics. However, expansive areas of asphalt and concrete surfaces surrounding parking lot medians might expose parking lot trees to high temperatures that reduce tree growth and aesthetic potential. We studied the effect of commercial parking lots on the size of established trees of Brachychiton populneus Schott & Endl., Fraxinus velutina Torr., Pinus canariensis Sweet ex K Spreng, Pinus halepensis Mill., Prosopis chilensis (Molina) Stuntz, and Ulmus parvifolia Jacq., in Phoenix, AZ, USA. During Summer 2001, tree size and temperatures of ground surfaces under and near tree canopies were evaluated in parking lot medians and adjacent perimeter landscape beds at 15 commercial parking lots. For all taxa, mean canopy volume, height, and diameter at breast height were reduced by 64, 32, and 37%, respectively, compared with trees of the same taxa in adjacent perimeter landscape bed. Overall, size of P. halepensis and U. parvifolia was most negatively affected by parking lot medians, while size of P. chilensis was least affected by parking lot medians. Average mid-day summer temperatures of asphalt surfaces under and near tree canopies in parking lot medians approached 60oC (140oF) and were as much as 27oC (49oF) higher than surface temperatures of vegetated and non-vegetated surfaces in adjacent perimeter landscape beds.
KW - Asphalt
KW - Canopy volume
KW - Growth
KW - Heat stress
KW - Temperature
UR - http://www.scopus.com/inward/record.url?scp=84879671807&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879671807&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84879671807
SN - 9789066054394
VL - 618
T3 - Acta Horticulturae
SP - 125
EP - 129
BT - Acta Horticulturae
ER -