Effect of trampling intensity on soil physicochemical traits in the Thymus mandschuricus field
Thymus mandschuricus,an endemic species to China,is an elite wild fragrant ornamental ground-cover plant with the characteristics of water-saving and drought-tolerance.Thymus mandschuricus plays an important role in urban landscaping and vegetation restoration,particularly in arid areas.With the demanding of new ground-cover plant species,T.mandschuricus was used to determine the effect of trampling intensity on soil physicochemical characteristics in the experimental base of Northeast Forest University.The results showed that the soil compaction increased with an increase of trampling frequency and intensity.After moderately or heavily trampling for 5 times,the soil compaction significantly researched to 0.401 or 0.531 kp,respectively,compared to the control of 0.243 kp (P＜0.05).Increase of soil compaction led to the decrease of water infiltration and soil water,while soil pH increased.Compared to the control,the content of soil nutrients (nitrogen,phosphorus,and potassium) significantly decrease after moderately and heavily trampling,which affected plant growth and biomass accumulation.T.mandschuricus can maintain its ornamental characteristics under mild tramples due to its dwarfness and twig flexibility.This experiment would provide a theoretical and practical guidance for the application of ground-cover woody plants.
国家科技期刊平台
NSTL
万方数据
维普
