摘要
对 2 4 m× 2 4 m面积内的 49个观测点进行了土壤含水量和坚实度的空间变异性研究。根据测定结果 ,用经典统计方法计算了均值、标准差、变异系数等统计特征值 ,认为该法不能定量的描述土壤特性的空间变异性。于是 ,用分形理论计算了含水量与坚实度的分形维数。结果表明 ,在一定范围内 ,土壤具有分形特征 。
Spatical variability and fractal dimension of soil water content and compactness were studied at a 24 m×24 m plot with forty nine observartion points. Using the classical statistical method, the parameters of average deviation, standard deviation and coefficient of variation can not describe the spatical variability of soil properties. So, fractal theory was adopetd. The results have proved that soil is imbued with fractal feature in limited range and fractal dimension can be expressed with the spatical heterogeneity of soil properties.
出处
《干旱地区农业研究》
CSCD
北大核心
2000年第4期61-65,共5页
Agricultural Research in the Arid Areas
基金
中国科学院"引进国外杰出人才基金"项目
关键词
土壤特性
空间变异性
分形
含水量
坚实度
soil property
spatical variability
fractal
water content
compactness
