旅游干扰对峨眉山风景区土壤及植被的影响

IMPACTS OF TOURIST DISTURBANCE ON SOIL PROPERTIES AND PALANT COMMUNITIES IN EMEISHAN MOUNTAIN SCENIC REGION

文章利用室外调查与室内分析相结合的方法,分析了旅游干扰对峨眉山景区内的植被与土壤性质的影响。试验结果表明:旅游干扰对峨眉山景区中的植被影响比较明显,植被均匀度指数、丰富度指数、优势度指数以及多样性指数都低于对照区,其中草本层所受到的影响最为严重,达到显著水平(P<0.05)。在干扰活动下,草本层的均匀度指数、丰富度指数、优势度指数及多样性指数分别比对照降低了13.42%、29.81%、10.12%及17.69%。此外,旅游干扰也对景区土壤性质造成较大影响,干扰使土壤容重进一步增加,同时降低了土壤有机质、全氮、全钾及速效养分的含量,在对不同土层深度分析中表明,干扰区土壤各理化性状随着土层深度的增加而增加,而对照区土壤各理化性状随着土层深度的增加而减少,旅游干扰对土壤理化性质影响显著。

The impact of tourism disturbance on soil and plant properties in Emeishan Mountain Scenic Region were analyzed based on the field investigation and the laboratory analysis. The results showed that the tourist disturbance generated a great effect on plant properties,evenness index,vegetation richness index,dominance index and diversity index. The impact on the herb layer was more serious and reached significant level. Compared with control treatment,the herb layer evenness index,vegetation richness index,dominance index and diversity index were 13. 42%,29. 81%,10. 12%,17. 69%,respectively. In addition,tourist disturbance generated a great effect on soil properties. The nutrients,total nitrogen,total potassium,available nutrients were significantly reduced,soil bulk density were significantly increased. Soil properties in interference area increased with the increase of soil depth by tourist disturbance,which decreased in the contrast area with the increase of soil depth.