On the adverse effects of tourism development on water resources and the main reasons.

1. The arrival of tourists has a certain impact on the ecological environment, such as water pollution.

2. There are always some projects that are harmful to the ecological environment in the development process, such as vegetation reduction and soil erosion, which are not conducive to water infiltration and replenishment.

3. Long-term management will reduce biodiversity (animal migration, plant death), which will lead to a series of chain events, and the medium for flowering and fruiting of some vegetation will not be guaranteed, which will lead to difficulties in soil and water conservation and natural rainwater infiltration.