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cje ›› 2005, Vol. ›› Issue (4): 443-447.

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Non-polluted ecological impact of tourist activities in natural scenic area

LIU Qiaoling, GUAN Dongsheng   

  1. Department of Environmental Science, Zhongshan University, Guangzhou 510275, China
  • Received:2003-11-14 Revised:2004-03-11 Online:2005-04-10

Abstract: Tourism is one of the main causes of non-polluting ecological impact.With the development of tourist activities,the effects of which on natural ecological environment have became more and more serious.The main effects are as follows: the soil is hardened; the contents of organic matters,water,nutrient elements decrease.At the same time,soil erosion is aggravated.The temporal and spatial distribution of water body change,and the sediment concentration in runoff increase.The covering degree of vegetation decrease,and the populations of plants change and tend to be simple.Some natural habitats in which wildlife exist are reduced and fragmented by land use change and human activities.So the biodiversity of the area is lost.However,because of the economic benefits,tourist activities also promote the protection of natural resources to a certain degree.So it is necessary to take measures to plan and manage natural scenic areas.

Key words: Vegetation, Soil aggregate, Logarithmic normal distribution, Fractal dimension, Soil aggregate stability index

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