苏州市土壤养分及有机质含量变化的空间尺度效应
Scaling Effect on Spatial Variability of Soil Nutrients and Organic Matter Content
孙永泉 1陈吉 1刘旭 1沈林林 2陆幸鹦1
作者信息
- 1. 苏州市耕地质量保护站，江苏苏州215011
- 2. 苏州市农产品安全监测中心，江苏苏州215011
- 折叠
摘要
[目的]明确苏州市土壤养分及有机质含量在不同空间尺度下的变化规律。[方法]以2010年苏州市耕地质量监测点数据为基础，分析了土壤养分及有机质含量与空间尺度的关系。[结果]土壤养分及有机质含量的变异程度与空间尺度变化存在一定关系，其中土壤养分及有机质含量的组内变异程度随着空间尺度的增大而增加，而其组间变异程度则表现出相反趋势，土壤养分及有机质含量的组间变异程度普遍大于其组内变异程度。[结论]为准确确定土壤养分及有机质含量的空间区域划分方法提供了科学依据。
Abstract
Objective] The study aimed to define the variation of soil nutrients and organic matter content in different spatial scales in Suzhou City.[Method] Based on the data from Suzhou cultivated land quality monitoring data in 2010, the relationship between the variation of soil properties(include soil nutrients and organic matter) and the spatial scales were analyzed.[Result] The results indicated that the variation co-efficient of soil properties content increased with increasing the number of soil sample while individual soil sample was taken as a basic statisti-cal unit, and decreased with spatial scale up while average of soil properties content in the defined scale was taken as a statistical unit.The variation coefficient of soil properties content within soil group less than among soil groups.[ Conclusion] The result could prove data support for determination of soil nutrients and organic matter content in the space division method.
关键词
土壤养分/土壤有机质/空间尺度/变异系数Key words
Soil nutrients/Soil organic matter/Spatial scales/Variation coefficient引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据