The Elevation Gradient Pattern About Larix Principis-rupprechtii Forest Plant Diversity And Soil Carbon Nitrogen And Phosphorus In Guandi Mountain

In this study, we adopt the method of investigating sample plot to know the soil under larix principis-rupprechtii of Guandi mountain in Shanxi Province.We know how the total carbon, total nitrogen content and total phosphorus content in the soil under the larix principis-rupprechtii forest are how to change along the altitude gradient (1790-2733 m).Experimental results show that:(1)Larix principis-rupprechtii forest’s a diversity of biological along the altitudinal basic according to a waveform curve, shrub’s a diversity of along an altitudinal gradient in accordance with the change of bimodal curve, the alpha diversity of the herb layer is in accordance with the change of the single peak curve.(2) Larix principis-rupprechtii forest’s sherb layer of β diversity index is generally greater than shrub layer’s β diversity index, shrubs layer and herb layer’s β diversity along an altitudinal gradient showed a bimodal curve, Larix principis-rupprechtii forest community species composition with elevation changes.(3)By using the Jaccard similarity method, the analysis can be drawn. When different Larix principis rupprechtii forest communities’ altitudes are getting close, the similarity coefficient of Larix principis rupprechtii is becoming more consistent, the result shows that the altitude is one of the main factors that affect the community differences of Larix principis rupprechtii.(4)With the deepening of soil depth, the carbon content, nitrogen content and phosphorus content in soil are decreased.(5)Total carbon content, total nitrogen content and total phosphorus content in soil increased with altitude significantly. (6) Soil moisture content and dissolved in soil water content of carbon, nitrogen and phosphorus are also increased with altitude significantly.