Impacts Of Tourist Activity And Different Land Use Patterns On The Physical And Chemical Properties Of Soil In Mount Wutai Meadow Nature Reserve

Taking Mount Wutai Meadow Nature Reserve.natural spot as the research object,the author analyzed that the impacts of tourism trampling on soil quality in Mount Wutai upland meadow,and effect of different land use patterns on soil physical and chemical properties. The results show that:(1) The fractal dimension、soil bulk density、soil hardness and the value of soil pH were increased with the increase of trampling intensity in Mount Wutai upland meadow nature reserve.The soil organic matter content were decreased with the increase of trampling intensity in Nantai、Dongtai and Beitai upland meadow. The organic matter content of trample area were decreased first then increased and in the last decreased with the decreasing of particle size for all types of soil aggregates. The organic matter content of0.5-0.25mm soil aggregates was the highest.Along with decreasing the size of soil aggregates, the soil aggregate organic matter storage were decreased first then increased and in the last decreased. The major organic matter storage were dominated by>5mm soil aggregate and organic matter content of0.5-0.25mm soil aggregates was the lowest.The total nitrogen content in upland meadow was decreased by tourism trampling and and surface layer is higher below layer. The total nitrogen content of control area is higher than trample area in Nantai、Dongtai and Beitai upland meadow. The total nitrogen content of<0.5mm soil aggregate were increased and the>0.5mm soil aggregate were decreased with the increase of trampling intensity.The alkaline hydrolysis nitrogen in Mount Wutai except Xitai upland meadow was decreased by tourism trampling. Soil aggregate alkaline hydrolysis nitrogen were increased first then decreased with decreasing the size of soil aggregates, and alkaline hydrolysis nitrogen of0.5-0.25mm soil aggregate is highest. The effect tourism trampling on total P content was not great. Soil aggregate total P content were increased first then decreased with decreasing the size of soil aggregates, and total P content of2-1mm soil aggregate is highest.(2) Soil integrated quality index were decreased with the increase of trampling intensity in Mount Wutai upland meadow nature reserve. Effects on eastern terrace are the most serious.centrial terrace the least.(3) The fractal dimension、soil bulk density、the value of soil pH and total P content in0-20cm layer is higher than20-40cm layer, While the content of organic matter, organic matter storage, total nitrogen content, alkaline hydrolysis nitrogen in the opposite.Under different land use ways, the fractal dimension was in the order of farmland> broad-leaved forest>coniferous forest>grass; the value of soil pH was in the order of farmland> broad-leaved forest>grass>coniferous forest; the pH of farmland was significantly different from that of grass and coniferous forest, while the pH of broad-leaved forest was significantly different from that of grass.The content of soil organic matter, total nitrogen, alkali hydrolysis nitrogen and total phosphorus content of the deep were in order of grass>coniferous forest>farmland> broad-leaved forest under different land use. The soil organic matter, total nitrogen, alkali hydrolysis nitrogen of broad-leaved forest was significantly different from that of grass and coniferous forest, The soil organic matter, total nitrogen, alkali hydrolysis nitrogen of farmland was significantly different from that of grass.Under different land use, organic matter storage of grassland with large particles, and organic matter storage of farmland mainly to small particles, the organic matter storage gap between coniferous forest and broadleaf forest in different particle size was not obvious.Under different land use, total phosphorus content in order of farmland>coniferous forest> grass>broad-leaved forest in0-20cm soil layer. The total phosphorus content of coniferous forest was significantly different from that of farmland and broad-leaved forest. In20-40cm soil layer, The total phosphorus content of farmland was significantly different from broad-leaved forest.