为揭示人为扰动对河岸带土壤造成的影响,以近年来频繁受到人为干扰的、辽宁省本溪市南芬区的细河河岸带为研究对象,采用野外调查和实验室分析测定的方法,对研究区27个点位,0—20cm、20—30cm、30—40cm 3个不同采样深度的土壤进行了多项理化性质的分析。结果表明,南芬细河河岸带土壤基质较硬,容重普遍较大而孔隙率较小,土壤结构性差;土壤呈中性或碱性;河岸带土壤全磷质量比普遍较高,而速效磷质量比极低;有机质和全氮质量比随采样点不同差异较大,二者之间存在极显著的相关性;不同理化指标数值普遍在研究区域的不同采样点表现出明显差异,而在同一点位的不同采样深度上的数值差异不显著。研究结果说明,频繁的人为干扰对南芬细河河岸带土壤层次性造成了较为严重的影响,其恢复过程尚需较长时间。

To reveal the impact of human disturbance on the riparian zone soil, the riparian zone of Xi River, where is frequently disturbed by human in recent years, and is located in Benxi City, Liaoning Province, has been selected as the research object. By using field investigation and laboratory analysis methods, the soil physical and chemical properties of the 27 points at three different sampling depths of 0—20cm, 20—30cm, and 30—40cm were studied. The results indicate that the riparian zone soil of Xi River has a hard soil matrix and a poor soil structure. The values of bulk densities are generally high, and total porosity of that is generally low. The soils are neutral or alkalescent. Contents of soil total phosphorus are generally high; however, the available phosphorus is extremely low. The value of organic matter and total nitrogen is very different in different points, and there is a significant relationship between the two properties. In the general, the property values in different points is significantly different, however it is insignificantly different among the three different sampling depths at the same point. Research results show that the frequent human interference with the riparian zone soil of Xi River has the serious influence on the soil natural layer, and the restoration process for the zone needs a long period.