Study On Soil Nutrient Spatial Variability Of Different Origin Under Phyllostachys Pubescens Forest

In this study, it's based on the natural Bamboo Mountain in Guixi hilly cultivated land and Yongfeng Forest Hills Bamboo Plantation in Jiangxi Province for study. Through the combination of statistics and GS methods, it's aimed to study the relationship of Spatial Variability in different origins of Bamboo wood soil of nutrient parameters, and also analyze the spatial variation in the two bamboo land of soil nutrient. After doing these, it can bring up that different bamboo land origins have different spatial distribution about soil nutrients, hoping to grasp the spatial distribution of soil nutrients and the overall levels in Jiangxi Province which can provide a basis for ecological and environmental protection, and reasonable fertilization to guide the production results. The main results are as follows:(1) Natural MaoZhuLin soil nutrient coefficient of variation of the difference does not large and approaches, the soil nutrient have larger deflection and metal elements variation coefficient, four kinds of trace elements in the coefficient of variation of Cu and Zn bigger and close, more than 50%; From space related spacing (or process) variable look said space scale,100m×100m in the variable process is not consistent nutrients, related spacing ranges from PH 50 m to alkali-hydro nitrogen's 1907m; Nutrient spatial distribution, which is relatively uniform organic matter and effective phosphorus, rapidly-available potassium content distribution trend for overall Performance from north to south, organic matter gradually increased in southeastern appear relatively high value area, in the Midwest and effective phosphorus northern appear relatively high area, trace metal element distribution to the overall trends in central high value is appeared.(2) Artificially MaoZhuLin soil several major nutrients variation and variation there are apparent differences between larger, rapidly-available potassium variation coefficient is the largest, while the other four main nutrient coefficient of variation in the size for total nitrogen> organic matter> effective phosphorus> alkali-hydro nitrogen, trace elements of the coefficient of variation of Cu and Zn bigger and close; Effective phosphorus, alkali-hydro nitrogen has better half variance structure, fitting degree are good; Nutrient very unevenly distributed, organic matter and effective phosphorus content distribution trend for overall performance increase gradually from east to west. organic matter in the central appear relatively high value district, total nitrogen, alkali-hydro nitrogen content for the spatial distribution of total trend gradually to increase, from west to east east content is relative taller. Trace metal element distribution is distribution pattern overall trends in more complex, the central high value appeared.(3) Compared to two pilot half variance structure, display is differ, for the same soil properties, some performance is consistent, others show inconsistencies. From the variation coefficient (CV% ) look, two pilot soil properties are widespread different degree of variation. NaturalMaoZhuLin ShiYanDian coefficient of variation of MaoZhuLin significantly higher than artificially. Two pilot variation of the soil pH are minimal. Just fitting model is concerned, two pilot performance consistent, such as effective phosphorus, rapidly-available potassium all belong to index model, natural MaoZhuLin sites 155m) and effective phosphorus (558m)rapidly-available potassium (autocorrelation distances significantly greater than effective phosphorus(121m)plantation sites and rapidly available potassium (505m). The above half of the different structure of variance of soil properties, fully shows the spatial variability is by the randomicity and structural, independence and correlateion of the decision.