Final answer:
China has developed wind energy as a significant alternative energy source to support its economic growth and reduce environmental impacts, while also striving for global market competitiveness.
Step-by-step explanation:
One well-developed alternative energy source for China is wind energy. This is important because energy is a key constraint in the rapid economic growth of China. With the country's significant investments in renewable energy to meet its high-level energy demand, China is expanding its wind and solar power industries.
The growth in renewable energy is not only crucial for reducing the environmentally detrimental effects of coal consumption but also for lessening the dependency on imported oil.
Moreover, China's strides in alternative energy technologies are vital for maintaining sustainable development and for staying competitive in the global market, particularly as the country moves towards a high-tech economy.