摘要
土壤团聚体稳定性是评价土壤结构和土壤物理形状的重要指标。对土壤团聚体分形维数、土壤团聚体平均重量直径和>0.25mm团聚体含量3种土壤团聚体结构评价的方法进行了探讨。结果表明,分形维数与>0.25mm团聚体的含量呈负相关性,但是平均重量直径与>0.25mm团聚体的含量有正的相关性。这三种方法都能应用来评价土壤结构,但是分形维数不仅表示土壤结构,还能说明土壤水分和土壤其它的物理性质。因此,分形维数是评价土壤结构的较好的方法。
The soil aggregates stability is one of the important factors to analyze soil structure.Soil aggregates were investigated in view of the fractal fraction,the amount of >0.25 mm aggregates and the aggregate weight dimension(MWD).Results showed that there was a negative correlation between the fractal fraction and the amount of >0.25 mm aggregates.On the contrary there was a positive correlation between the MWD and the amount of <0.25 mm aggregates.This indicates that the fractal fraction and the MWD can be u...
出处
《水土保持通报》
CSCD
北大核心
2009年第5期114-117,共4页
Bulletin of Soil and Water Conservation
基金
"十一五"国家支撑计划重大项目(2006BCA01A07
2006BAD09B08)
