The main goal of the study was to estimate the differences in moisture pattern, hydrophysical and soil water repellency (SWR) parameters of sandy soil profiles at two grassland sites, separated by a distance of about 100 m, near Sekule village (southwest Slovakia). Site S1 was covered with natural vegetation formed by a process of primary succession on a sand dune, whilst site S2 was covered by a synanthropic vegetation, formed by spontaneous secondary succession. Soil sampling and infiltration experiments were performed at designated plots during June 2017 to determine hydrophysical and SWR parameters. Higher measured value of organic carbon content at site S2 resulted in the greater values of repellency index (RI) and lower values of hydraulic conductivity, k(−2 cm), and sorptivity of water, S_w(−2 cm) compared to S1. For evaluating the differences between estimated hydrophysical and SWR parameters of S1 and S2, a Welch’s test of means (allowing for unequal group variances) was used, revealing significant differences in S_w(−2 cm), and RI, at p < 0.05. Simultaneously designed infiltration experiments pointed out altered distribution in wetting pattern across the soil profile with different penetration depths: below 100 cm and 80 cm at S1 and S2, respectively. Although the observed moisture patterns showed different shapes and extensions, difference in the cumulative increase in soil water storage between 0 and 50 cm was not significant (35.1% and 36.8% of applied water) at S1 and S2, respectively. According to the results we can state that grasslands at sites S1 and S2 have different soil water repellency parameters and shape of moisture pattern, induced probably by finger flow. Nevertheless, the soil water retention capacity of site S2, formed by spontaneous secondary succession is nearly the same as the retention capacity of native grassland S1.

这项研究的主要目的是估计两个草原站点（距离西南斯洛伐克）相距约100 m的沙质土壤剖面的水分模式，水物理和土壤疏水性（SWR）参数的差异。地点S1被沙丘初次演替形成的天然植被覆盖，而地点S2被自发次生演替所形成的同生植被覆盖。2017年6月在指定地块进行了土壤采样和渗透实验，以确定水物理参数和SWR参数。站点S2处有机碳含量的较高测量值导致较高的排斥指数（RI）值和较低的水力传导率k（-2 cm）和水的吸附度S与S1相比_w（-2 cm）。为了评估S1和S2的估算水文物理参数和SWR参数之间的差异，使用了Welch均值检验（允许不等的组方差），揭示了p处的S _w（-2 cm）和RI的显着差异。 <0.05。同时设计的入渗实验指出，不同渗透深度的土壤分布在湿润模式中的分布发生了变化：分别在S1和S2处低于100 cm和80 cm。尽管观测到的水分模式显示出不同的形状和延伸，但在S1和S2处，0和50 cm之间的土壤蓄水量的累积增加差异并不显着（分别为施水量的35.1％和36.8％）。根据结果​​，我们可以指出，地点S1和S2处的草地具有不同的土壤疏水性参数和湿度模式形状，这可能是由手指流引起的。尽管如此，由自然继发演替形成的S2站点的土壤保水能力与天然草地S1的保水能力几乎相同。