Research on the Background System of Eco-tourism

The paper discusses the background system of eco-tourism on three aspects: mass tourism,high urbanization and urban environment deterioration.Urban environment deterioration is estimated from an analysis of 10 items: air pollution,water pollution,garbage,noise pollution,light pollution,radiation pollution,pollution of ionizing radiation,electromagnetic radiation pollution,radioactive contamination and microbial contamination.A large number of facts have proven that urban environment has seriously deteriorated and provides no good space for people to live in.City people are keen to have a good living space and thus have a tourism motivation to "return to nature and return to innocence".That is the actual background for eco-tourism.