Spatial Structure Change Analysis of Cultivated Soil Nutrients in Urban Fringe of North China
Spatial structure analysis is beneficial to guide soil nutrients management. This paper developed a method for spatial structure of soil nutrients and analyzed these change characteristics from 2000 to 2007 using geographic information system (GIS) technology for Daxing district of Beijing, China. The results of spatial structure were obtained and occupied space proportions of total kjeldahl nitrogen (TN), alkali-hydrolyzable nitrogen (AN), organic matter (OM), available phosphorus (AP) and available potassium (AK) were 0.33, 0.22, 0.25, 0.03, 0.16 for 2000 and 0.32, 0.25, 0.23, 0.03, 0.17 for 2007, respectively. The change characteristics and influence factors for spatial structure of soil nutrients were systematically analyzed. Increased soil nutrients were exhibited three belts on the whole, whereas decreased soil nutrients were located in other regions. Natural factors and human activities drove these changes of soil nutrients. This study provides a reference for future related research.
KeywordsSoil nutrients Spatial structure Principal component analysis Geographic information system Urban fringe
This study is supported by the National Key Research and Development Program of China (No. 2016YFD0800904), the Youth Fund of the Beijing Academy of Agriculture and Forestry Sciences (No. QNJJ201830) and the Beijing Excellent Talent Support Program (No. 2015000020060G136). We are very grateful to Prof. Danfeng Sun and Hong Li for their soil data.
- 1.Jin, J.W., Xu, Y.F., Ye, H.C., Shen, C.Y., Huang, Y.F.: Effect of land use and soil management practices on soil fertility quality in North China cities urban fringe. Afr. J. Agricu. Res. 6, 2059–2065 (2011)Google Scholar
- 10.Pearson, K.: Principal components analysis. Lond. Edinb. Dublin Philos. Mag. J. 6, 566 (1901)Google Scholar