Abstract: Abstract Since tourism is the main huan activity inside Changbaishan Biosphere Reserve(CBR), the environmental impacts of tourism are considered the key problems of conservation and development in the area. The environmental impacts of tourism were analyzed based on the data obtained by field survey to various scenery sites and ecosystems in this article. The results showed that the environmental impacts of tourism tended to be serious, and strengthened management and education were leading ways to solve those problems. Some recommendations about exploitation and conservation were presented.

Key words: coastal salt marsh, organic carbon, deposition and burial.