| 张小桐,张瑞芳,王红,张爱军,周大迈.县域土壤有效态微量元素的空间变异特征及影响因素——以徐水县为例[J].干旱地区农业研究,2016,34(1):74~80 |
| 县域土壤有效态微量元素的空间变异特征及影响因素——以徐水县为例 |
| Spatial variability and contributing factors of soil available micronutrients at county level——A case study at Xushui County |
| |
| DOI：10.7606/j.issn.1000-7601.2016.01.12 |
| 中文关键词: 土壤微量元素 空间变异 地统计学 |
| 英文关键词:soil micronutrients spatial variability geostatistics |
| 基金项目:基于GIS的河北省山区土壤养分空间变异特征研究(ZD20131023) |
|
| 摘要点击次数: 1384 |
| 全文下载次数: 1393 |
| 中文摘要: |
| 以徐水县土壤有效态铜（Cu）、锌（Zn）、铁（Fe）、锰（Mn）为研究对象， 利用GIS与地统计学相结合的方法， 分析了4种微量元素的空间变异特征及影响因素。结果表明：4种有效态微量元素含量在空间上都属于中等程度变异； 4种微量元素的块金效应值在12.21%～49.97%之间，其中Cu和Fe具有强烈的空间相关性，Zn和Mn具有中等的空间相关性。Cu和Mn在空间分布上呈现连续性， 而Zn和Fe大体呈现岛状分布； 除有效铜平均含量处于高含量水平， 其它微量元素平均值均处于中含量水平； 相关性分析显示除Fe对部分养分的正相关性不强外， Cu、Zn、Mn均与土壤养分呈极显著的正相关性； 土壤pH值与4种微量元素均呈负相关性， 其中Fe呈极显著的负相关性。 |
| 英文摘要: |
| In this paper, we followed the method of combining GIS (geographical information system) and geostatistics to analyze the spatial variability and contributory factors of four available micronutrients in soils. The results showed that available Cu, Zn, Fe and Mn exhibited moderate spatial variations. The nugget effect values of these micronutrients varied between 12% and 50%, with Cu and Fe showing the highest while Mn and Zn moderate. A continuous distribution pattern was detected for Cu and Mn but not for Zn and Fe. Average content of Cu was high, while the other micronutrients were medium. Soil nutrients including organic matter, available nitrogen, available phosphorus and available potassium had highly significant positive correlations with Cu、Zn and Mn. The soil pH had negative correlation with the four micronutrients, with Fe the most significant. |
| 查看全文 查看/发表评论 下载PDF阅读器 |