A Study On The Destroy Mechanism And The Protecting Measures To The Tourist Resources Of Karst Cave

With the great tourist upsurge's coming, exploiting tourist cave has become vigorousin the whole world. Every exploited tourist cave, however, has suffered a lot because of the lack of protecting consciousness and credible safeguard, which leaded tourist cave to the vicious road that when a tourist cave was exploited, it was destroyed soon.Furong cave, exploited in 1994, lies in south-east of chongqing. Its crystal-clear sightseeing's brilliance existed no longer for the weathering, eroding and polluting in the cave. The research employed some environmental factors, including temperature, humidity and density of CO2 caused by exploitation, to observe the characteristic and regularity of variation, seek the destroy mechanism to the speleothem sightseeing in the cave, and explore the protecting countermeasures. The entering of the tourist and lamp-light gave much energy to Furong Cave and the temperature in the cave rised slowly. The different temperature between the outer and the inner as the air circulation, would make the cave wet seriously in the summer and dry in the winter. The density of CO2 would go up because of piston-effect, cave depositing and the tourists' entering.Tourists is the main reason to influence the cave. The larger when the number of tourist is, the denser the CO2 in the cave would become. The highest record of the density in Furong Cave is 6200PPM. The rising temperature in the cave, the lamp-light's toasting and the convictive air made the humidity of the whole or part of the cave descend, which made the speleothem sightseeing dry, cracked and weathering. The acid air from the outer and the highly dense CO2 would cause acid erode action to the speleothem sightseeing with water vapor. The existence of lamp-light offered a good chance for the lightloving plant to grow up, thus a lot of bryophyte covered the speleothem sightseeing. The dust of atmosphere deposited in the cave when the environment in the cave was very wet, which made the polluted surface dark and no luster. In view of the destroy caused by exploiting, the paper employed the protecting measures, such as macroscopic eclogy protecting, the space environment protecting, reducing the temperature of solution, increasing the wet and getting rid of CO2, the safety protecting measure to tourist and the isomer depositing measure to the stressed sightseeing like shanhuyaoci.