Soil salinization is a global problem, mainly affecting arid and semi-arid regions, which are susceptible to salinity due to high evaporation and low rainfall. Salinization in soils causes negative effects on edaphic organisms and, consequently, on plants. Understanding the effects of salinization in soils is important for future intervention in these salinized areas in order to make them productive again. Although there are many tools for soil quality assessment, the quantification of soil nematodes has been highlighted because of the high sensitivity of these organisms to soil conditions. The present study evaluated the nematofauna in a salinized Caatinga area in the Brazilian semiarid region. This area is located next to a stream that flooded the area in 2004, did not recover from the flood, and has been suggested as a desertification area. Sample collection for this study was carried out in the salinized Caatinga and the adjacent natural Caatinga (control) during two seasons (dry and rainy). In each area and period, 20 samples were collected and nematodes were extracted and quantified according to their trophic group. The abundance of bacterivorous, fungivorous, omnivores, and phytonematoids was much lower in the salinized Caatinga (on average 1/100 mL of soil) compared to control area (on average 25/100 mL of soil) soil. The electrical conductivity reached 106.20 dS/m in the salinized Caatinga during the rainy season. Our results show that salinization negatively affects the nematodes of the Caatinga soil in the Brazilian semiarid region, highlighting the damage of salinity to soil nematodes, since the abundance was greatly reduced in the salinized Caatinga within all trophic groups, compromising the functionality of the ecosystem.

土壤盐碱化是一个全球性问题，主要影响干旱和半干旱地区，干旱和半干旱地区由于高蒸发量和低降雨而容易受到盐碱化的影响。土壤中的盐渍化会对水生生物产生负面影响，进而对植物产生负面影响。了解土壤中盐渍化的影响对于将来在这些盐渍化地区进行干预以使其恢复生产力非常重要。尽管有许多用于土壤质量评估的工具，但由于这些线虫对土壤条件的高度敏感性，因此已着重强调了土壤线虫的定量方法。本研究评估了巴西半干旱地区盐碱化的Caatinga地区的线虫。该地区位于2004年泛滥该地区的小溪旁，并未从洪水中恢复过来，因此被建议为荒漠化地区。在两个季节（干燥和多雨）期间，在盐碱化的Caatinga和相邻的天然Caatinga（对照）中进行了本研究的样品收集。在每个区域和每个时期，收集了20个样本，并根据其营养组提取和定量了线虫。与对照地区（平均25/100 mL土壤）相比，盐碱化的Caatinga（平均土壤1/100 mL）中细菌，真菌，杂食动物和类植物激素的含量要低得多。在雨季，盐碱化的Caatinga的电导率达到106.20 dS / m。我们的研究结果表明，盐渍化对巴西半干旱地区Caatinga土壤的线虫有负面影响，突显了盐度对土壤线虫的损害，