Spatial Distribution Of Soil Nutrients In Shanxi Province And Its Correlation With Soil Landscape Research

Soil is the history of natural body and the basic means of production and the product of human labor.Cultivated land resource is the most basic material conditions of agricultural production and also the important material foundation of human survival and development. Much less, especially the cultivated land resource scarcity, how can make in the limited arable land to create more output become a major problem that concerns the national economy and people’s livelihood.So the current soil nutrients spatial change characteristics and distribution of in-depth understanding will contribute to the improvement of the scientific and rational cultivation, fertilization and the cultivated land resource management problems, help you to develop precision agriculture sustainable.This study firstly through traditional statistical methods of each administrative region of Shanxi Province and five cultivated land soil nutrient base data carries on the preliminary analysis, understand the five kinds of soil nutrients variation, and the average size.Further land use statistical methods and geographic information technology to study the Shanxi Province farmland soil organic matter, total nitrogen, available p, available potassium and pH of the spatial structure and spatial distribution regularity of variation, using the optimal fitting model, five kinds of nutrients for the kriging interpolation, mapped the five kinds of spatial distribution pattern of soil nutrients and analyzed.On the basis of research on five kinds of nutrients, respectively, in combination with principal component analysis (pca) and statistical methods and GIS techniques for the integrated soil nutrient status of shanxi further research to understand.Finally discussed procession of different landscape types and different soil types on soil nutrient content, various nutrients in different soil and different topographical information for understanding.The results show that the organic matter, total nitrogen, phosphorus and potassium in Shanxi Province are in moderate variation, the effective phosphorus content pH is weak variation;In addition to the pH since has strong spatial correlation, effective phosphorus have weak spatial correlation, since several other nutrients are have moderate spatial correlation.Organic matter, total nitrogen, phosphorus, potassium and available p in soil nutrient comprehensive content low space distribution pattern in the northwest, southeast of the pattern of high, and pH, on the other hand, the results of pH and other nutrients and strong negative correlation research. Different nutrient under different geomorphic types and soil types show different significance, including flood land nutrient content is significantly higher than other landforms, hills are worst phenotype, brown soil, brown soil, chao soil under different soil to significantly higher, while yellow spongy soils showed significantly lower.