[1]XU Jun-liang,ZHANG Yi-ping.Analysis on Sap Flow Time Lag Effect of Platycladus orientalis in Spring[J].Research of Soil and Water Conservation,2009,16(04):109-112.
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Analysis on Sap Flow Time Lag Effect of Platycladus orientalis in Spring
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
16
Number of periods:
2009 04
Page number:
109-112
Column:
Public date:
2009-08-20
- Title:
- Analysis on Sap Flow Time Lag Effect of Platycladus orientalis in Spring
- CLC:
- S715
- DOI:
- -
- Abstract:
- Studies on forest water consumption and its affected mechanism are of guiding significance to forestry construction program, forest types’ layout, tree species selection, stand structure configuration and stand water management in arid-semiarid areas. The sap flow velocity of Platycladus orientalis and meteorological factors such as solar radiation, air temperature and air moisture were synchronously measured with thermal dissipation probe systems and an automatic weather station in spring. The results showed that diurnal changes of sap flow velocity of Platycladus orientalis and solar radiation demonstrated significant peak characters, whereas peak characters of air temperature and air moisture were not obvious. The sap flow lag effect existed compared to solar radiation, air temperature and air moisture, and the lag time was 110 min, -70 min and -60 min respectively. In conclusion, with time lag effect considered, model fitting precision would be improved and sap flow velocity of Platycladus orientalis could be well simulated only with solar radiation.
- References:
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1900-01-01