Digital image analysis for the estimation of cracked areas and the soil shrinkage characteristic curve in clay soils amended with composted sewage sludge
Digital image analysis for the estimation of cracked areas and the soil shrinkage characteristic curve in clay soils amended with composted sewage sludge
复制标题
数字图像分析用于估算堆肥污泥修正粘土中的裂缝面积和土壤收缩特征曲线
DOI：
10.5424/sjar/2004023-101
复制
发表时间：
2004
影响因子：
0.9
通讯作者：
P. G. Fernández
中科院分区：
文献类型：
--
作者：
M. Torres;E. D. L. Armenteros;R. O. Fernández;P. G. Fernández
粘土裂缝的形成是一个对农业产生重要影响的物理过程。我们的具体案例是指在科尔多瓦（西班牙）乡村种植在变性土上的旱地橄榄园（Olea europaea）。连续两年在该土地上施用20 Mg ha -1 的堆肥污泥，试图改善土壤的理化性质。本研究提出了一种在托盘干燥期间测量粘土裂缝的方法。在整个时间内，每次处理（20 Mg ha -1 堆肥和对照）中产生的裂纹面积的测量是在预先进行正射校正的数码照片上进行的。用堆肥污水污泥改良的粘土在干燥过程后产生的裂缝面积减少了 7%。此外，还可以获得土壤收缩特征曲线（SSCC）。
The formation of cracks in clay soils is a physical process with important agricultural repercussions. The specific case occupying us refers to a dryland olive grove (Olea europaea) grown on a vertisol in the countryside of Cordoba (Spain). For two consecutive years, rates of 20 Mg ha -1 of composted sewage sludge have been applied on this land to attempt to improve the physical and chemical properties of the soil. This study proposes a method for the measurement of cracks in clay soil during a desiccation period in trays. The measurement of the cracked area generated in each treatment (20 Mg ha -1 of compost and control) throughout the time, is done on digital photographs, previously orthorectified. The area of cracks generated after a desiccation process decreased by 7% in clay soils amended with composted sewage sludge. Additionally, the soil shrinkage characteristic curve (SSCC) can be obtained.