Climate change and degradation of natural resources pose daunting challenges in arid and semi-arid rangelands of southern Mediterranean region. Overcoming these challenges requires considerable management actions efforts. In this context, the current two-year (2017/2018 and 2018/2019) study investigated the effects of soil surface scarification and reseeding of rangelands with sulla (Hedysarum coronarium L.) on botanical composition, biomass production, water productivity and pastoral value in the Sbaihia community, Tunisia. The experimental design consisted of a randomised complete block design with six replications. The treatments were: (i) soil surface superficial scarification; (ii) reseeding sulla following soil scarification; and, (iii) control. Despite the relatively important interannual variation, the highest aboveground net primary production (2 307 and 5 330 kg dry matter ha^-1), water productivity (9.5 and 11.8 kg DM mm^-1), and pastoral value (2 099 and 4 853 forage units ha^-1) values were recorded in the rangelands reseeded with sulla in both growing seasons. Sulla contribution in the species composition of reseeded rangelands increased from 1.7% in 2018 to 2% in 2019. Although soil surface scarification increased the vegetation cover, its effect on biomass production was not significant. Therefore, combined soil scarification and reseeding well-adapted native forage species has a great potential to improve productivity of semi-arid rangelands.

气候变化和自然资源退化在地中海南部地区的干旱和半干旱牧场中提出了艰巨的挑战。克服这些挑战需要付出大量的管理行动努力。在这种情况下，当前为期两年（2017/2018和2018/2019）的研究调查了土壤表面稀疏化和牧草对带草（Hedysarum coronariumL.）关于突尼斯Sbaihia社区的植物组成，生物量生产，水生产率和牧草价值。实验设计由随机重复的完整模块设计组成，重复了六次。处理方法是：（i）土壤表面浅层划痕；（ii）土壤稀疏后播种沙拉；（iii）控制。尽管年际变化相对重要，但地上净初级生产力最高（2 307和5 330 kg干物质ha ^-1），水生产率（9.5和11.8 kg DM mm ^-1）和牧草价值（2099和4 853牧草）单位ha ^-1）的值记录在两个生长期都覆盖有沙勒的牧场中。Sulla对再造牧场的物种组成的贡献从2018年的1.7％增加到2019年的2％。尽管土壤表层疏松增加了植被覆盖度，但对生物量生产的影响并不显着。因此，将土壤稀少化和播种适应性强的天然牧草物种结合起来，具有提高半干旱牧场生产力的巨大潜力。