Abstract:

Vegetation is one of the most sensitive environmental factors in the scenic area ecosystem influenced by tourism activities, and also the focus of the ecological environment research. 6 main trails have been chosen and 21 investigation belt transects have been set up in Mount.Jiuhua scenic area. Each sampling belt from near to far in the direction of trails is followed by four consecutive quadrats, and each quadrat area is set to 1 m² .Targets of the vegetation have been recorded, such as types, quantities, heights, and coverages. Index of plant community impact, plant diversity and importance values of anthropochory have been used for analyzing and counting the obtained investigation targets. Besides, multiple comparisons and Pearson correlation of SPSS13 were prepared for testing significances and correlation on the results. The results are as follows :1)The coverage and the average height of plant community increase gradually as the distance increases along the tour roads, and the differences are significant( P <0.05);the more distant that is from the trails, the smaller the changes of floristic dissimilarity are; index of plant community impact decreases from near to far in the direction of tour roads; 2)Index of plant community diversity, evenness and dominance have relation with the intensity of tourism activities.The greater the intensity is, the more significant the changes are; 3)Among all species of the investigated plant, the species of anthropochory account for 19.49%, large quantities of anthropochory appear in the quadrats near trails, and reduced significantly in quadrats away from the trails, anthropochory important value distribution reduce gradually along the trails to the internal; 4)The number of tourists showed a positive correlation with the degree of impacts on plant communities,the degree of which decline as the distance increases along the tour roads, but the differences are not significant( P >0.05); 5)The impacts of tourism activities on plant community also have relevances with the elevation and slope of investigation belt transects.

Key words: plant community, tourism activity, effect, Mount. Jiuhu scenic area