• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring >Study on Available Copper Content in Cultivated Soils and Its Affecting Factors in Zhuhai
【24h】

Study on Available Copper Content in Cultivated Soils and Its Affecting Factors in Zhuhai

机译：珠海市耕地土壤有效铜含量及其影响因素研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Zhuhai city in Pearl River Delta was chosen as a study area. The soil samples were recollected according to the sampling points of Second National Soil Survey. Based on application of geographical information system (GIS) and SPSS software, the content, distribution and its influence factors of available Cu in cultivated soils were analyzed. The results showed that: the average available copper content in soil depth of 0-40cm of cultivated land in Zhuhai is 3.13mg¡¤kg-1, variation range is 0.02-99.96mg¡¤kg-1. When the soil depth of cultivated land increased, available copper content ranges rapid decreased. The rank of content range, average, standard deviation, variance, skewness and peakness of different land use types in decreasing order is vegetable soil > paddy field > dry land. Regression analysis using line equation, power function and exponential function between available copper content and affecting factors shows that: a positive correlation exits between pH and the available copper content in some soil depth. There is a remarkable positive correlation exit between the available copper content and organic matte. The available copper content and clay content also has a remarkable positive correlation. In soil depth of 12-27cm, the correlation coefficient of line equitation between pH and the available copper content is the biggest. In soil depth of 27-40cm, the correlation coefficient of exponential function between clay content and the available copper content is the biggest. In other soil depth, the correlation coefficient of power function between the available copper content and its affecting factors are the biggest. There are significant differences among nature affecting factors of available copper content in different depth of cultivated land. When pH ¡Ü 7.0 and pH £¾ 7.0, affecting factors of available copper content in soil depth of 0-12cm in decreasing order is organic matt--er > pH > clay content and clay content > organic matter > pH, while affecting factors of available copper content in soil depth of 12-27cm¡¢27-40 cm in decreasing order is clay content > organic matter > pH and organic matter > clay content > pH.
机译：珠江三角洲的珠海市被选为研究区域。根据第二次全国土壤调查的采样点对土壤样品进行采集。基于地理信息系统（GIS）和SPSS软件，分析了耕作土壤中有效铜的含量，分布及其影响因素。结果表明：珠海耕地0-40cm深度土壤平均有效铜含量为3.13mg·kg-1，变化范围为0.02-99.96mg·kg-1。当耕地土壤深度增加时，可利用的铜含量范围迅速减少。不同土地利用类型的含量范围，平均值，标准差，方差，偏度和峰值的降序排列为菜地>稻田>旱地。利用线性方程，幂函数和有效铜含量与影响因素之间的指数函数进行回归分析表明：在某些土壤深度中，pH与有效铜含量之间存在正相关关系。可用铜含量和有机哑光之间存在显着的正相关关系。有效铜含量与粘土含量也具有显着的正相关关系。在12-27cm的土壤深度中，pH与有效铜含量之间线等值的相关系数最大。在27-40cm的土壤深度中，黏土含量与有效铜含量之间的指数函数相关系数最大。在其他土壤深度中，有效铜含量及其影响因素之间的幂函数相关系数最大。不同耕地深度的自然影响因素之间的有效铜含量存在显着差异。当pH≤7.0和pH£¾7.0时，影响土壤中0-12cm深度的有效铜含量的递减顺序是有机亚光。 -- er> pH>黏土含量和黏土含量>有机质> pH值，而影响土壤深度12-27cm，27-40 cm中有效铜含量递减的因素依次是黏土含量>有机质> pH和有机质>粘土含量> pH。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号