Page 29 - 全球气候变化及其影响Global Climate Change and Its Impacts-185×260

Chapter 1 Scientific Basis of Global Climate Change

al climate system by altering greenhouse gas concentrations in the atmosphere. For example,
carbon emissions from deforestation may accelerate ice sheet melting, triggering sea-level
rise and increased extreme climate events. Furthermore, land use change influences concen-
trations of other atmospheric greenhouse gases (such as methane and nitrous oxide) by alter-
ing surface biogeochemical cycles.

III. Other Impacts During Industrialization

Beyond greenhouse gas emissions, pollutants and other byproducts generated during
industrialization have caused extensive and profound impacts on climate and environment.
(1) Air Pollution
The release of various harmful gases and particulate matter during industrial production
processes constitutes one of the primary sources of air pollution. Sulfur dioxide (SO ), nitro-
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gen oxides (NOₓ), volatile organic compounds (VOCs), and fine particulate matter (PM2.5
and PM10)are pollutants that not only pose serious threats to human health but also exert
complex influences on the climate system. For instance, SO and NOₓ are key components
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in acid rain formation, damaging vegetation, corroding buildings, and acidifying water bod-
ies; while particulate matter such as black carbon (BC) and organic carbon (OC) can impact
climate by altering atmospheric radiation balance.Black carbon absorptionof solar radiation
heats the atmosphere, causing localized temperature increases while reducing the albedo of
snow cover and glacier surfaces, thereby accelerating ice melt. In contrast, certain types of
aerosols like sulfates can reflect sunlight, creating a cooling effect, though this is typically
offset or surpassed by the warming effects of other greenhouse gases.
(II) Water Pollution
Industrial wastewater discharged directly into rivers, lakes, and oceans without ade-
quate treatment leads to water quality deterioration and destruction of aquatic ecosystems.
Wastewater containing excessive heavy metals (e.g., mercury, cadmium, lead), persistent
organic pollutants (POPs), chemical oxygen demand (COD), and biological oxygen demand
(BOD) causes eutrophication, hypoxia, and even red tide phenomena in receiving water
bodies, severely compromising water resource quality and availability. Furthermore, certain
toxic substances accumulate in the food chain, ultimately entering the human body through
consumption of affected fish or other aquatic organisms, endangering public health. Water
pollution issues extend beyond surface water, as groundwater is also impacted by industrial
activities. Particularly in industries such as mining and petroleum extraction, underground
aquifers may become contaminated through leakage or improper disposal, thereby affecting
populations reliant on groundwater as drinking water sources.
(III) Soil Degradation
Industrial activities can also lead to soil quality degradation, including issues such as
soil erosion, salinization, compaction, and fertility loss. The improper stacking of industrial
waste, slag dumping, and excessive use of chemical fertilizers and pesticides can alter soil

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