| 基于GIS和地统计学的土壤养分空间变异分析 |
| |
| 引用本文： | 张敏,贺鹏飞,陈伟强.基于GIS和地统计学的土壤养分空间变异分析[J].东北农业大学学报,2010,41(3). |
| |
| 作者姓名： | 张敏 贺鹏飞 陈伟强 |
| |
| 作者单位： | 河南农业大学资源与环境学院,郑州,450002 |
| |
| 基金项目： | 农业部办公厅全国耕地地力评价工作 |
| |
| 摘 要： | 运用GIS和地统计学相结合的方法研究了新郑市土壤有机质、全氮、有效磷、速效钾的空间变异情况。结果表明,有机质、全氮和速效钾的变异系数在29%～45%,有效磷变异系数最大为75%;通过地统计学的半方差函数分析,有机质和全氮空间变异性表现朝均一化方向发展,都具有中等空间相关性,有效磷空间相关性最弱,主要受随机性因素的影响;采用克立格方法进行最优内插,绘制了养分含量分布图,并对其空间变异进行了初步分析。本研究为有效利用土壤和因地制宜开展施肥工作提供依据。
|
| 关 键 词： | GIS 地统计学 土壤养分 空间变异 |
Spatio-temporal variability analysis of soil nutrients based on GIS and Geostatistics |
| |
| ZHANG Min,HE Pengfei,CHEN Weiqiang.Spatio-temporal variability analysis of soil nutrients based on GIS and Geostatistics[J].Journal of Northeast Agricultural University,2010,41(3). |
| |
| Authors: | ZHANG Min HE Pengfei CHEN Weiqiang |
| |
| Institution: | College of Resources and Envi-ronment;Henan Agricultural University;Zhengzhou 450002;CHina |
| |
| Abstract: | Geostatistics combined with GIS were applied to analyze the spatial-temporal vailability of soil nutrients such as organic matter,total nitrogen,available phosphorus and available potassium in Xinzheng City.The results showed that organic matter,total nitrogen and available potassium in the coefficient of variation were from 29% to 45%,and the largest coefficient of variation of available phos-phorus was 75%.By Semi-variogram function of statistical analysis,organic matter and total nitrogen showed the medi... |
| |
| Keywords: | GIS Geostatistics soilnutrient spatial-temporalvariability |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
