TY - JOUR
T1 - Urban climate modifies tree growth in Berlin
AU - Dahlhausen, Jens
AU - Rötzer, Thomas
AU - Biber, Peter
AU - Uhl, Enno
AU - Pretzsch, Hans
N1 - Publisher Copyright:
© 2017, ISB.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - Climate, e.g., air temperature and precipitation, differs strongly between urban and peripheral areas, which causes diverse life conditions for trees. In order to compare tree growth, we sampled in total 252 small-leaved lime trees (Tilia cordata Mill) in the city of Berlin along a gradient from the city center to the surroundings. By means of increment cores, we are able to trace back their growth for the last 50 to 100 years. A general growth trend can be shown by comparing recent basal area growth with estimates from extrapolating a growth function that had been fitted with growth data from earlier years. Estimating a linear model, we show that air temperature and precipitation significantly influence tree growth within the last 20 years. Under consideration of housing density, the results reveal that higher air temperature and less precipitation led to higher growth rates in high-dense areas, but not in low-dense areas. In addition, our data reveal a significantly higher variance of the ring width index in areas with medium housing density compared to low housing density, but no temporal trend. Transferring the results to forest stands, climate change is expected to lead to higher tree growth rates.
AB - Climate, e.g., air temperature and precipitation, differs strongly between urban and peripheral areas, which causes diverse life conditions for trees. In order to compare tree growth, we sampled in total 252 small-leaved lime trees (Tilia cordata Mill) in the city of Berlin along a gradient from the city center to the surroundings. By means of increment cores, we are able to trace back their growth for the last 50 to 100 years. A general growth trend can be shown by comparing recent basal area growth with estimates from extrapolating a growth function that had been fitted with growth data from earlier years. Estimating a linear model, we show that air temperature and precipitation significantly influence tree growth within the last 20 years. Under consideration of housing density, the results reveal that higher air temperature and less precipitation led to higher growth rates in high-dense areas, but not in low-dense areas. In addition, our data reveal a significantly higher variance of the ring width index in areas with medium housing density compared to low housing density, but no temporal trend. Transferring the results to forest stands, climate change is expected to lead to higher tree growth rates.
KW - Growth trend
KW - Lime trees
KW - Urban heat island effect
KW - Urban trees
UR - http://www.scopus.com/inward/record.url?scp=85037340236&partnerID=8YFLogxK
U2 - 10.1007/s00484-017-1481-3
DO - 10.1007/s00484-017-1481-3
M3 - Article
C2 - 29218447
AN - SCOPUS:85037340236
SN - 0020-7128
VL - 62
SP - 795
EP - 808
JO - International Journal of Biometeorology
JF - International Journal of Biometeorology
IS - 5
ER -