Geography Reference
In-Depth Information
Fig. 6.8 Simulated monthly
average temperature in
Southern Jiangsu under
different scenarios (C). Land
2010 in REG scenario and
Land 2010 in CES scenario
represent the monthly
average temperature
simulated with the Land Use
and Cover Change (LUCC)
data in 2010 under the REG
scenario and CES scenario as
the underlying data,
respectively. Land 2050 in
REG scenario and Land 2050
in CES scenario refer to that
in 2050
Temperature
35
30
25
20
15
10
5
0
−5
0
2
4
6
8
10
12
Month
Land 2050 in REG
Land 2050 in CES
Land 2010 in REG
Land 2010 in CES
REG scenario and the other scenarios, the range of high-temperature regions is
much wider in 2050 under REG scenario than the other scenarios.
The biggest difference in monthly average temperature under different scenarios
is in July, therefore, the impacts of different underlying surfaces on temperature
can be more clearly revealed through comparing the spatial pattern of monthly
average temperature in July (Fig. 6.10 ). The impacts of different underlying sur-
faces on the spatial pattern of temperature in Southern Jiangsu province in July are
consistent with that on monthly average temperature, but it is more significant in
July. Taking the results in 2050 under REG scenario and CES scenario (Fig. 6.10 c
and d) as examples, the high-temperature region in Nanjing has expanded into a
separate continuous region in 2050 under CES scenario, while the scope of the
high-temperature region in Zhenjiang is still very limited. Besides, the high-
temperature regions in Suzhou, Wuxi, and Changzhou have also expanded into a
large continuous district, but its scope and temperature range are both smaller than
that in 2050 under REG scenario.
6.2.4 Key Impact Mechanisms of Future Land use Change
on Regional Temperature in Southern Jiangsu
Province
According to surface energy budget equation, there is close relationship between
surface net radiation, land surface albedo, downward shortwave radiation, down-
ward long-wave radiation, and land surface emissivity.
 
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