Institute of Landscape Ecology, Slovak Academy of Sciences, Štefánikova 3, P.O. BOX 254, 814 99 Bratislava, Slovakia.
Sci Total Environ. 2017 Dec 1;599-600:1082-1089. doi: 10.1016/j.scitotenv.2017.04.227. Epub 2017 May 12.
The presented study concentrates on assessing the ecosystem function of water retention. The water retention function is defined as the ability of the landscape to retain water, slow runoff and encourage water infiltration. The water retention function was expressed by calculating the hydric significance (HS) indicator. This method is based on scoring the individual input parameters according to their overall impact on watershed hydrology. The study was conducted on a sample area of Poprad River basin. The final results presented a spatial distribution of hydric function within the watershed classified according to its significance into four classes (from limited to excellent significance). A breakdown of the results on the level of elementary watersheds was used in order to examine those with low hydric function. The results showed a significant influence of land-use on retention function; however, this impact could be limited by extreme precipitation or high soil water saturation. The methodology of hydric significance represents an innovative approach towards assessment of ecosystem function of water retention on regional level.
本研究集中评估了水保持的生态系统功能。水保持功能被定义为景观保持水、减缓径流并促进水渗透的能力。水保持功能通过计算水意义（HS）指标来表示。该方法基于根据其对流域水文学的总体影响对各个输入参数进行评分。该研究在 Poprad 河流域的样本区域进行。最终结果根据其重要性将流域内的水功能空间分布分为四类（从有限到极好的意义）。为了检查那些水功能较低的流域，对基本流域进行了细分。结果表明，土地利用对保留功能有显著影响；然而，这种影响可能会受到极端降水或土壤高水饱和度的限制。水意义的方法代表了一种评估区域水平上水保持的生态系统功能的创新方法。
