概述旅游业对环境的影响

旅游业对自然环境有正反两方面的影响。反而影响包括对水体环境，大气环境，动物与植物资源和土壤环境的影响。以及侵蚀沙兵和影响审美等方面。

OVERVIEW ON THE ENVIRONMENTAL IMPACTS OF TOURISM

Tourism has negative and positive impacts on natural environment. Negative impacts include effects on water and air environmental resources .plant and animal resources .soil and dune erosion,and aesthetics. Positive impacts include preservation of natural areas worldwide due to tourism and its associatedeconomic benefits. At present. our research on the environmental impacts of tourism has been belated.looking at tourism after damage has taken place. with no preimpact measurements available to documentthe extent of environmental change. At the same time. no comprehensive conceptual model exists onwhich research can be based. Alternative tourism should be explored. one new alternative tourism trend isecotourism. The overall need is for a conceptual model that takes a broad view of tourism*s cumulativeenvironmental impacts considering the entire range and intensity of impact on a regional basis. Such amethod would increase our ability to understand and predict impacts prior to occurrence. mitigate environmental impacts. and ensure a sustainable tourism industry.