The Influence Of Tourist Activities On Soil Environment In Kanas Village Scenic Spot Of Xinjiang

The influence of tourism interference on the soil environment of scenic spot is the common problem of tourism resource development,environmental protection and governance.At present,the research on the impact of tourism activities on the soil in the scenic spot mainly focuses on the physical and chemical properties of organic matter content,water content,hardness,vegetation coverage,pH value and fertility.However,there have been few studies on soil heavy metal pollution in scenic spots.Since the advent of environmental magnetism has been widely used in urban monitoring,road,industrial park,the soil pollution source and pollutant is delineated range,has a large number of studies have shown that soil magnetic properties is response and instructions for the pollutant,can characterize the change of soil environment,which makes use of environmental magnetism method to monitoring soil environmental pollution caused by tourism activities possible.In order to explore the feasibility of environmental magnetism method in monitoring soil pollution in scenic spots,72 samples of topsoils and 40 section samples,and carries on the analysis of system of environmental magnetism.were collected from Kanas village in Kanas 5A scenic spot in Xinjiang.The research results indicate that:?1?the average content of soil magnetic minerals in Kanas village scenic spot is relative high.The magnetic properties of topsoil samples are predominated by ferromagnetic minerals and a small amount of anti-ferromagnetic minerals.The magnetic grains are mainly coarser multidomain?MD?particles and fewer superparamagnetic particles?SP?.The spatial distribution of magnetic parameters shows that the parameters of magnetic mineral content(?_LF,SIRM,SOFT and HIRM)indicate high value in lake outlet tourism area,and the relative low values in new village,old village and tourist reception area.The spatial distribution of other parameters?_FD%,S_-ratio,SIRM/?_LF)is opposite to the magnetic content parameters.The distribution of high magnetic points in the study area is consistent with the distribution of intensive human activity areas,buildings and roads in the scenic spot.The high magnetic value of lake outlet tourism area is mainly related to the stronger natural soil formation,and the high magnetic points in other regions are mainly influenced by the tourism activities.Therefore,we can effectively distinguish and delineate the scope of man-made pollution in the scenic area by soil magnetic method,and provide reference for the prevention and control of soil pollution and tourism planning.?2?the total content of magnetic minerals in the soil is higher in the study area,ferromagnetic minerals dominate the magnetic characteristics of the samples and contain a small amount of incomplete ant ferromagnetic minerals,the soil magnetic particles are dominated by multi domain?MD?and stable single domain?SSD?coarse particles;The soil magnetic characteristics of vertical change was divided into three parts,performance of ferromagnetic minerals for Bottom soil layer?70-100cm?>Topsoil layer?0-30 cm?>Subsoil layer?30-70 cm?,the particle size of magnetic minerals is shown to be Bottom layer>Subsoil layer>Topsoil layer,there are less sluggish viscosity SP particles in the topsoil.with the increase of depth,the SP particles gradually decrease,and the magnetic particles are mainly MD and SSD;the soil surface soil layer of the scenic spot reflects the magnetic characteristics of two sources of natural and artificial factors,the magnetic enhancement of the bottom soil reflects the contribution of the base rock matrix to the magnetic properties of the soil.?3?In Kanas village scenic area,the content of soil available nutrient content decreased and the pH value increased.The distribution of soil nutrients and magnetic parameters was strongly correlated,and the soil available phosphorus was significantly negatively correlated with?_FD%.There was a significant negative correlation between the soil available potassium and SIRM.From different partitions,investigation of soil available P and SIRM,SOFT and SIRM/?_LF has significant positive correlation,soil pH and?_LF has significant positive correlation,the old village soil ammonium nitrogen with HIRM was significantly positive correlation,tourism destination soil available K and S_-ratio significant correlation between thewire,pH and SIRM,SOFT has significant positive correlation.The increase of the magnetic mineral content in the scenic spots caused by the tourism activities in the scenic spot also caused the soil environmental problems such as the decrease in the content of the quick effect of soil and the increase of pH value.