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| 松嫩平原西部农田土壤有机质和全氮的空间分布影响因素分析 |
| Spatial variability and influencing factors analysis of farmland soilorganic matter and total nitrogen in the west songnen plain |
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| DOI： |
| 中文关键词: 影响因素 空间变异 土壤有机质 全氮 通榆县 |
| 英文关键词: affected factor spatial variability soil organic matter total nitrogen Tongyu County |
| 基金项目:中国科学院重点部署项目课题（KZZD-EW-08-02）；国家自然科学基金资助项目(40901096)；湖南省自然科学基金项目（14JJ2098） |
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| 中文摘要: |
| 运用地统计学、GIS和传统统计方法，分析松嫩平原西部吉林省通榆县农田表层土壤有机质和全氮的空间分布，并探讨高程、坡度、土壤类型和人工施肥量等因素对土壤有机质和全氮空间分布的影响.研究结果表明：1)吉林省通榆县农田表层土壤有机质含量西部高，东北和西北部低,而全氮含量为北部高，西南部低；2)不同海拔高度上的土壤有机质和全氮含量变化差异并不显著；3)土壤有机质和全氮含量随着坡度的增大，急剧减少；4)淡黑钙土、栗钙土和草甸土的有机质和全氮含量明显高于风沙土和沼泽土；5)通榆县各乡镇人工施肥量与土壤有机质和全氮空间变异的相关性并不强，说明影响本县土壤有机质和全氮含量的因素以自然环境因素为主. |
| 英文摘要: |
| The geo-statistics, geographic information system (GIS) and traditional descriptive statistics was combined to analyze spatial variability characteristics of the topsoil organic matter (SOM) and total nitrogen (TN) in Tongyu County, Jilin province in the West Songnen Plain, and the influence was discussed, such as different altitudes, slopes, soil types and artificial fertilizer on spatial variability characteristics of SOM and TN. The results show that: 1) The content of farmland soil organic matter is higher in the Midwest and lower in the Northeast and Northwest. Then the content of total nitrogen is high in the North and low in the West south in Tongyu County, Jilin province; 2) The spatial variability characteristics of SOM and TN with different altitudes is not significant in change; 3) The content of SOM and TN drastically reduces as the slope increases; 4) The content of SOM and TN on light chernozem, chestnut soil and meadow is higher than the sand soil and swamp soil, etc.; 5) There is low correlation between artificial fertilizer and the spatial variability of SOM and TN in Tongyu county. This result illustrate that the natural environment factors are the main control forces of the spatial pattern of SOM and TN in this county. |
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