Page 92 - 全球气候变化及其影响Global Climate Change and Its Impacts-185×260

Global Climate Change and Its Impacts

to surrounding areas.
2.Human Activities
Industrial production, transportation emissions, and air conditioning use generate an-
thropogenic heat sources that increase thermal accumulation in cities, further intensifying the
heat island effect.
3.Reduced Vegetation
Urbanization decreases green space coverage, reducing the natural cooling effect. Trees
and plants not only provide shade but also lower ambient air temperature through transpira-
tion.
The urban heat island effect has exerted negative impacts on residents’ health and so-
cio-economic development. In high-temperature environments, the human body’s heat dissi-
pation function becomes constrained, which can easily trigger heatstroke, dehydration, and
even fatal cardiovascular diseases. Additionally, the surge in energy demand, particularly the
power load during summer peak periods, imposes tremendous pressure on electrical grids. In
the long term, frequent high-temperature weather will also shorten the service life of build-
ings and infrastructure while increasing maintenance costs.
(2) The Importance of Urban Planning and Green Buildings
To mitigate the urban heat island effect and enhance urban climate resilience, scientifi-
cally rational urban planning and promotion of green buildings are crucial:
[1] Compact Urban Development
Encourage high-density, multi-functional urban development models to reduce envi-
ronmental damage caused by urban sprawl. Compact cities can alleviate heat island effects
through optimized land utilization, shortened commuting distances, and reduced transporta-
tion emissions.
[2] Increasing Green Spaces and Water Areas
In urban planning, reserving sufficient public green spaces, parks, and water bodies not
only provides recreational areas for residents but also effectively regulates local climates.
Studies show that every 10% increase in green space coverage can reduce urban core tem-
peratures by approximately 1°C.
【3】Green Building Design
Promote energy-efficient and eco-friendly green building standards, such as adopting
high-performance thermal insulation materials, natural ventilation systems, and solarpho-
tovoltaic panelstechnologies to reduce building energy consumption andcarbon emissions.
Concurrently, measures like rooftop greening and vertical greening help lower indoor tem-
peratures and improve urban microclimates.
(3) Enhancing the Resilience of Urban Infrastructure
In response to frequent extreme weather events and water management challenges
caused by climate change, strengthening the resilience of urban infrastructure is crucial for
ensuring urban operational safety:

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