Research On Multi-criteria Planning Method Of Hiking Trails At Urban Forest Park

This article selects typical hiking trails at Zijin Mountain to make communities and soilinvestigation, research the human disturbance’s influence on forest ecological system, such asmountaineering,based on that,make multi-criteria planning of the hiking trails.Data shows thatnear the hiking trails,the plant community’s species richness is low.Main tree species on upperslope are affected by wild trails and grow weakly, and the trees of bottom slope are not affectedseriously and grow well; on the contrary,the shrubs and herbs of bottom slope grow thebest.Strong anthropogenic interference caused a degradation trend of the trees’ and shrubs’composition and structure, natural succession is restrained, the species is growing significantlyweaker,at trail A the Pinus massonianas’ average diameter at breast height is25.5cm, at trail Bis28.0cm, at trail A the German oaks’ average diameter at breast height is16.0cm, at trail B is17.0cm, trail A was reduced by2.5cm and1.0cm respectively than B. At the trail with moreHuman trample, pioneer species are more, the update layer is damaged, and escaped or cultivatedplants increase.The nearer to the hiking trail, the more seriously the soil harden, the soil’swater-holding capacity and venting quality is worse, the capillary porosity is less than10%,thenutrient loss is more serious, and the arbors, shrubs and herbs grow poorer,5m away from trails,the venting quality is the worst; The farther from the hiking trails, the soil’s water-holdingcapacity and venting quality is stronger, the arbors, shrubs and herbages grow better.Existingroads’ average length is3585.11m, the average dimension and winding degree is1.09and1.38,the average length of the planned trails is3383.4m, the average dimension and winding degreeis1.06and1.19,which is more easy to walk,and the building economic cost reduce; the averagegrade of existing road is17.970, average grade of planning road is15.160, which reduce theadverse effect of soil and water loss;roads’ increasing is conducive to relieve pressure on theenvironment;And planned trails don’t cross through the nature reserves and touristattractions,which protect the wildlife and reduce the disturbance of mountain climbingactivities.Under the trend that city forest parks and scenic spots across the country are open forfree, the problem that the Zijin Mountain is faced with has relatively representative significance.