Human Impact

For the past decades, Hengduan mountains has suffered greatly from human activities. Timber exploit, for example, reduced the forest size to about one-sixth of what it originally was. This great forest size reduction affects the natural habitat of animals and plants, and may cause some of these species to become endangered. Another human impact is hydroelectricity. Over seventy percent of renewable resource in China is hydroelectricity. Although the energy is renewable, the cost of building dam is the landscape; These dams not only affect the areas they are located, but can also affect other regions through run-off, gas emissions, and pollution, too.