旅游踩踏对五台山东台山地草甸土壤酶活性的影响

Effect of Tourist Trampling on Enzyme Activity of Dongtai Meadow in Wutai Mountain

[目的]研究旅游踩踏对五台山东台山地草甸土壤酶活性的影响,旨在为五台山旅游资源的开发、保护和管理提供科学依据。[方法]采用野外采样调查与室内研究分析相结合的方法。[结果](1)在不同海拔高度处,踩踏对土壤脲酶和蔗糖酶活性有显著的抑制作用,表现为:无踩踏区酶活性>踩踏轻微区酶活性>踩踏严重区酶活性;表层(0—20cm)土层酶活性>下表层(20—40cm)土层酶活性;(2)在不同海拔高度处,两个土壤层的踩踏严重区脲酶、蔗糖酶活性与无踩踏区的脲酶、蔗糖酶活性差异显著,但轻微区蔗糖酶活性与无踩踏区无显著差异;(3)在不同的海拔处,表层和下表层的踩踏严重区土壤过氧化氢酶活性、磷酸酶活性显著低于无踩踏区土壤过氧化氢酶活性、磷酸酶活性(p<0.05);表层轻微区的过氧化氢酶活性、磷酸酶活性与无踩踏区的过氧化氢酶活性、磷酸酶活性均无显著差异。[结论]五台山东台山地草甸土壤酶活性已受到人为踩踏的破坏,应采取相应措施保护景区健康发展。

[Objective] The effect of tourist trampling on the enzyme activity of Dongtai meadow in Wutai Mountain was investigated to provide a scientific basis for the development, protection, management of Wutai tourism resources. [Methods] Based on the combination of field sampling investigation and indoor analysis method. [Results] （1） Under the different levels of different altitudes, tourist trampling had the significant inhibitory effect on the soil urease activity and invertase activity, and they showed the sequence of no stampede areas〉trampling slight areas〉trampling serious areas; soil urease activity and invertase activity in the surface layer（0-20 cm）〉 soil urease activity and invertase activity in the subsurface layer（20-40 cm）; （2） At the different altitudes, the soil urease activity and invertase activity in two layers of the trampling serious areas were different prominently from the no stamped areas, but invertase activity in trampling slight areas showed no significant difference compared with no stamped areas; （3） At different altitudes, catalase activity, phosphatase activity of stampede serious soil surface layer（0-20 cm） and the subsurface layer（20- 40 cm） were significantly lower than those without trampling zone（p〈0.05） ; soil catalase activity, phosphatase activity of trampling slight soil surface layer（0-20 era） had no significant difference compared with those in the no stamped areas. [Conclusion] The soil enzyme activity of Dongtai meadow in Wutai Mountain had been destroyed, and it is necessary to take measures to protect Dongtai meadow of Wutai Mountain from being destroyed.