Spatial variability of hydrophysical properties of fallow sandy soils
Spatial variability of hydrophysical properties of fallow sandy soils
复制标题
休耕沙土水物理性质的空间变异
作者：
R. Sándor;Ľ. Lichner;T. Filep;K. Balog;É. Lehoczky;N. Fodor
摘要对匈牙利乔廖斯帕洛斯和厄博特扬两个地区的休闲桑迪土壤水分物理性质的空间异质性进行了研究。在Csólyospálos和Örbottyán分别测得的小颗粒（=粉土+粘土）含量（5.0%对13.7%）、有机质含量（1.62%对0.91%）和CaCO3含量（3.1%对5.1%）存在显著差异，导致Csólyospálos土壤的斥水性持续性较高。这也导致了一个显着更高的吸水性和水力传导性的Örbottyán土壤。土壤水文物理性质的空间异质性显著，由于土壤性质的差异，其空间异质性达到3个数量级。在Csólyospálos站点，拒水性停止时间与导水率和吸水率呈负相关。
Abstract Spatial heterogeneity of soil hydrophysical properties was estimated in 2 fallow sandy soils at Csólyospálos and Örbottyán, Hungary. Significant differences in small particle (= silt + clay) content (5.0% vs. 13.7%), organic matter content (1.62% vs. 0.91%), and CaCO3 content (3.1% vs. 5.1%) measured at Csólyospálos and Örbottyán, respectively, resulted in a higher persistence of water repellency in the Csólyospálos soil. It also resulted in a significantly higher water sorptivity and hydraulic conductivity of the Örbottyán soil. The spatial heterogeneity of soil hydrophysical properties was significant reaching 3 orders of magnitude differences due to the variances of soil properties. The water repellency cessation time was inversely related to the hydraulic conductivity and water sorptivity at Csólyospálos site.