THE GROWTH RATE AND BIOMASS OF TREES ON THE NCSSM CAMPUS

Christine Ha, Annie Jin and Nelessa Lewis

BackgroundTrees on NCSSM

Campus vs Trees in Duke Forest

What is DBH? Biomass?

Trees in urban New York

Hypothesis: The trees on our campus will have a greater DBH and Biomass because they have less competition for food and water and are regularly maintained.

ProcedureTree Maps and Deciding our

PlotMeasuring DBH and Tree HeightBiomass formula

€

Biomass = a(DBH 2 )b

€

log(Biomassstem ) = 2.708× log(DBH )+1.333

DataTrees of NCSSM Trees of Duke Forest

Average for Sweet Gums:

Average for Sweet Gums:

DBH-50.22 cmBiomass-1293.60 kg

• DBH-32.6 cm• Biomass-598 kg

Average for Loblolly Pines:

Average for Loblolly Pines:

DBH-39.22 cmBiomass-1296.10 kg

• DBH-16.2 cm• Biomass-67 kg

Average for White Oaks:

Average for White Oaks

DBH-69.19 cmBiomass-2805.09 kg

• DBH-28.2 cm• Biomass-400 kg

ConclusionsThe trees of NCSSM campus, which are

closer to an urban setting, were significantly larger than the trees in Duke Forest

Because:Less competition for light and water. More space Larger Crown

More Photosynthesis Healthier Trunks

Regularly maintained by our grounds crewMulchPruning

Further Study: Coring

ProcedureWhat these cores mean

AcknowledgementsMr. Oishi-Researcher at Duke UniversityDr. SchmalbeckMr. BollingerUrbanization Effects on Tree Growth in

the Vicinity of New York City by Jilian W. Gregg, Clive G. Jones and Todd E. Dawson

Global Change in the Ecology of Cities by Nancy B. Grimm, Stanley H. Faeth and Nancy E. Golubiewski