S-Space College of Agriculture and Life Sciences (농업생명과학대학) Program in Agricultural and Forest Meteorology (협동과정-농림기상학전공) Theses (Master's Degree_협동과정-농림기상학전공)
Trees growing through impervious surfaces use shallower water sources: A stable isotope study
불투수층에서 자라는 수목의 얕은 수원 이용 : 안정 동위원소를 이용한 연구
- 농업생명과학대학 협동과정농림기상학
- Issue Date
- 서울대학교 대학원
- 학위논문 (석사)-- 서울대학교 대학원 : 협동과정농림기상학, 2016. 2. 류영렬.
- Impervious surfaces account for a large proportion of urban land surface.
However, little is known about tree water use in impervious surfaces. Here, we
compared the water sources of trees growing through impervious and pervious
surfaces using oxygen and hydrogen isotopic compositions from stem water and
other potential water sources before and during the wet season. The proportion of
topsoil water in the water source, calculated using a simple linear mixing model,
showed that trees growing through impervious surfaces took up more water from
shallow layers than control trees before the wet season. An IsoSource model applied
in the wet season confirmed that trees growing through impervious surfaces took
most of their water from depths of around 20 cm, while control trees took the
greatest portion of their water from a depth of 70 and 100 cm. These findings could
improve urban hydrological cycle models and suggest that urban trees growing
through impervious surfaces might be more vulnerable to drought.