1. Results and discussion
Comparison of the Microclimate Condition under Deciduous Broadleaf Forest Basin and Evergreen Coniferous Forest Basin in Central Japan
Ali RAHMAT, Masateru SENGE, and Kengo ITO
United Graduate School of Agriculture Science, Gifu University, 1-1 Yanagido, Gifu , Japan
Introduction
Materials and Methods
The microclimate of the forest is one of the important factors affecting the environment, especially in the forest ecosystem. Forest canopy creates a specific understory microclimate that differs from the surrounding local climate. Air temp, Soil temp, stream temp influence by the forest canopy.
After Second World War, In Japan many forest change from broadleaf forest to coniferous forest. For forest management planning in future information of effect change forest tree on microclimate is important, but the information is still limited.
Broadleaf (DB)
Coniferous (EC)
Fig.1 Location of basins in Kuraiyama experimental forest, Gero city, Japan
Observed variables:
Air Temperature (Hobo Pendant Temp)
Soil temperature at 5cm,15cm,30cm,50cm depth(Hobo-U12)
Stream temperature (Hobo-U20)
Precipitation ( Tipping bucket rain gauge/AMeDAS)
Results and discussion
Fig.2 Daily average (up) and daily range (bottom) of air temperature in both basin
Fig.3 Daily average (up) and daily range (bottom) of 5cm depth soil temperature in both basin
Fig.4 Daily average (up) and daily range (bottom) of 50cm depth soil temperature in both basin
Fig.5 Evergreen coniferous forest (up) and deciduous broadleaf forest (bottom)(Takayama site as reference of phenology)
Fig.6 Stream temperature in both basins
Fig.7 Stream temp and soil temp in evergreen coniferous (EC)
Fig.8 Stream temp and soil temp in deciduous broadleaf (DB)
Table.1 Results of multiple linear regression in winter
Table.2 Results of multiple linear regression in summer
Conclusion
Tair,Tstream,Tsoil5cm winter DB>EC
Tair, TstreamTsoil5cm summer DB<EC
Daily range Tair DB>EC
Daily range TSoil5cm DB<EC
DB:W (Tair, P, Q), Sum (Tair, Tsoi-all,P,Q)
EC :W(Tair, Tsoil-all,P,), Sum (Q)