The Representative Soil Sampling Scheme of England and Wales: a statistical analysis of topsoil nutrient status and pH between 1971 and 2001
The Representative Soil Sampling Scheme of England and Wales: a statistical analysis of topsoil nutrient status and pH between 1971 and 2001
复制标题
英格兰和威尔士代表性土壤采样计划：1971 年至 2001 年间表土养分状况和 pH 值的统计分析
DOI：
10.1111/j.1475-2743.2006.00051.x
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发表时间：
2006
影响因子：
3.8
通讯作者：
R. Skinner
中科院分区：
文献类型：
--
作者：
M. Oliver;J. Archer;S. Baxter;A. D. Todd;R. Skinner
自1969年以来，英格兰和威尔士的代表性土壤采样计划记录了英格兰和威尔士农业用地土壤的信息。在监测可持续农业发展方面，这是一个宝贵的土壤信息来源。在1971-2001年期间，土壤养分状况和pH值的变化进行了检查。对这一期间的调查数据采用了几种统计分析方法。这里的主要重点是1971年、1981年、1991年和2001年的数据。对随时间变化的研究结果一般表明，土壤中钾的含量增加了，镁的含量保持相当稳定，磷的含量下降了，pH值变化不大。在监测的范围内评估了今后的取样需要，以确定在给定置信水平和容许误差下的平均值，并检测在5年和10年期间在这些相同水平上平均值随时间的变化。 非分层多变量分类的结果表明，英格兰和威尔士可以分层，以优化未来的采样和分析。为了比农业更广泛地监测土壤质量和健康，应在该国更多地区进行取样，并记录更广泛的特性。
The Representative Soil Sampling Scheme of England and Wales has recorded information on the soil of agricultural land in England and Wales since 1969. It is a valuable source of information about the soil in the context of monitoring for sustainable agricultural development. Changes in soil nutrient status and pH were examined over the period 1971–2001. Several methods of statistical analysis were applied to data from the surveys during this period. The main focus here is on the data for 1971, 1981, 1991 and 2001. The results of examining change over time in general show that levels of potassium in the soil have increased, those of magnesium have remained fairly constant, those of phosphorus have declined and pH has changed little. Future sampling needs have been assessed in the context of monitoring, to determine the mean at a given level of confidence and tolerable error and to detect change in the mean over time at these same levels over periods of 5 and 10 years. The results of a non‐hierarchical multivariate classification suggest that England and Wales could be stratified to optimize future sampling and analysis. To monitor soil quality and health more generally than for agriculture, more of the country should be sampled and a wider range of properties recorded.