The diversification and intensification of crop rotations (DICR) in no-till systems is a novel approach that aims to increase crop production, together with decreasing environmental impact. Our objective was to analyze the effect of different levels of DICR on the abundance, biomass, and species composition of earthworm communities in Argentinean Pampas. We studied three levels of DICR—typical rotation (TY), high intensification with grass (HG), and with legume (HL); along with three references—natural grassland (NG), pasture (PA), and an agricultural external reference (ER). The NG had the highest earthworm abundance. Among the DICR treatments, abundance and biomass were higher in HL than in HG and, in both, these were higher than in TY. The NG and PA had a distinctive taxonomic composition and higher species richness. Instead, the DICR treatments had a similar richness and species composition. Earthworm abundance and biomass were positively related to rotation intensity and legume proportion indices, carbon input, and particulate organic matter content. The application of DICR for four years, mainly with legumes, favors the development of earthworm populations. This means that a subtle change in management, as DICR, can have a positive impact on earthworms, and thus on earthworm-mediated ecosystem services, which are important for crop production.

中文翻译：

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免耕模式下作物轮作的多样化和集约化促进了and的丰度和生物量

免耕系统中作物轮作的多样化和集约化是一种新颖的方法，旨在增加作物产量并减少对环境的影响。我们的目标是分析不同水平的DICR对阿根廷南美大草原earth群落的丰度，生物量和物种组成的影响。我们研究了DICR的三个级别-典型旋转（TY），高强度草（HG）和豆类（HL）；以及三个参考资料-天然草地（NG），牧场（PA）和农业外部参考资料（ER）。NG的a含量最高。在DICR处理中，HL的丰度和生物量高于HG，两者均高于TY。NG和PA具有独特的分类学组成和较高的物种丰富度。代替，DICR处理具有相似的丰富度和物种组成。worm的丰度和生物量与旋转强度和豆类比例指数，碳输入量以及颗粒有机质含量呈正相关。DICR的应用四年（主要是豆科植物）有利于worm种群的发展。这意味着像DICR这样的管理上的细微变化可能会对earth产生积极影响，从而对worm介导的生态系统服务产生积极影响，这对作物生产至关重要。