Grasslands are important water-regulating agro-ecosystems. Their ability to store and retain water is of vital importance under the current trend of increasing peak rains and droughts, which are events that can result in economic damage to infrastructure and crops. The presence of the anecic earthworm Lumbricus terrestris has a positive effect on the water regulation of the soil. This earthworm creates semi-permanent burrows with a depth of up to 2 m, which increase the water infiltration rate and capacity of the soil. The burrows can also facilitate plant root penetration into deeper soil layers, thus increasing drought resistance. The objective of this research was to explore the ability of L. terrestris to survive and reproduce after introduction into grasslands on sandy soils where they had been absent.

We introduced L. terrestris into mesocosms on sandy soil under permanent grassland at two dairy farms in the Netherlands. Results showed that while L. terrestris was able to survive and produce cocoons, survival rate was low (32% after seven months, 6% after fifteen months) and the number of juveniles was low (2.6 and 2.7 ind. m⁻² after seven and fifteen months, respectively). The causes of this low survival rate may be related to the life history of the earthworms introduced, the effects of soil moisture, interspecific competition for food with the native population of epigeic earthworms, and the risk of predation.

We conclude that L. terrestris can survive and produce cocoons after introduction into permanent grassland on sandy soil, but only further experimental trials over greater time spans and in non-enclosed plots will determine whether there is realistic potential for L. terrestris to develop a stable population.

草原是重要的调节水分的农业生态系统。在当前降雨高峰和干旱不断增加的趋势下，它们储存和保留水的能力至关重要，这些事件可能会对基础设施和农作物造成经济损失。无臭蚯蚓Lumbricus terrestris的存在对土壤的水分调节具有积极作用。这种蚯蚓会形成深度达 2 m 的半永久性洞穴，从而增加水的渗透率和土壤的容量。洞穴还可以促进植物根部渗透到更深的土壤层，从而增强抗旱性。本研究的目的是探索L的能力。土星在引入它们以前不存在的沙质土壤上的草原后生存和繁殖。

我们将 L. terrestris引入荷兰两个奶牛场永久草地下沙土的中生态系统中。结果表明，虽然L . 土蜂能够存活并结茧，但存活率较低（七个月后为 32%，十五个月后为 6%），且幼虫数量也较低（七个月后为 2.6 个月，十五个月后为 2.7 ind. m -2 ^）。成活率低的原因可能与引入的蚯蚓的生活史、土壤湿度的影响、与当地表层蚯蚓的种间食物竞争以及被捕食的风险有关。

我们的结论是L . 在引入沙质土壤上的永久草地后，陆生植物可以生存并结茧，但只有在更长的时间跨度和非封闭地块中进行进一步的实验才能确定陆生植物是否具有现实潜力。陆地以发展稳定的种群。