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Global Climate Change and Its Impacts

sion reduction policies’ effective implementation is crucial for achieving emission reduction
targets. Through establishing implementation mechanisms and flexibly utilizing diverse tools
like carbon markets and tax policies, the nation comprehensively promotes emission reduc-
tioninitiatives.
Carbon MarketAs a market-based emission reduction mechanism, it plays a core role
in national emission reduction processes. Its operation follows cap-and-trade principles:
the government first sets a total carbon emission cap based on national reduction targets
and sectoral emission assessments. Subsequently,carbon emissionallowances are allocated
according to specific rules to entities included inthe carbon marketEnterprises, which en-
compass high-carbon emission industries such as energy, industry, and construction. The
allowances held by enterprises can be traded on the market. Enterprises with emissions be-
low their allocated allowances may sell surplus allowances for economic gains, while those
exceeding their allowances must purchase additional quotas from the market or face strict
penalties. This mechanism provides economic incentives for enterprises to proactively adopt
energy-saving and emission-reduction measures, such as investing in R&D for efficient
energy utilization technologies and optimizing production processes, thereby reducing car-
bonemissions, lowering quota purchase costs, or generating revenue from allowance sales.
For instance, the European Union Emissions Trading System (EU ETS), the world’s first
and largest carbon market, has driven numerous power companies within its framework to
increase investments in renewable energy generation, gradually reduce reliance on coal-fired
power, and effectively advance the low-carbon transition of the energy structure, achievinga
significant decline in regional carbon emissionswithin its jurisdiction.
Tax policy is another crucial tool for the state to promote emission reduction. The state
implements carbon tax policies to levy taxes on carbon emission activities by enterprises and
individuals. Carbon tax rates are determined based on the type, quantity of carbon emissions,
and their environmental impact. Taking the carbon tax on fossil fuels like coal, petroleum,
and natural gas as an example, enterprises are required to pay taxes corresponding to their
carbon content when purchasing and using these energy sources. This increases the cost
of using fossil fuels, prompting enterprises and consumers to shift toward clean energy. In
some countries, theimposition of carbon taxeson fuel at high rates has driven consumers to
prefer new energy vehicles or public transportation to reduce travel costs, thereby decreas-
ing carbon emissions in the transportation sector. For enterprises, to lower production costs,
they will increase investment in energy-saving andemission reduction technologiesIncreased
investment in research and development to enhance energy utilization efficiency and re-
duce fossil energy consumption. In addition to carbon taxes, the government can promote
emission reduction by adjusting other relevant tax policies. Implementing tax incentives for
energy-saving and environmental protection enterprises, such as reductions or exemptions in
corporate income tax and value-added tax, encourages active participation in energy-saving
and emission reduction projects and drives the development of the energy conservation and

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