Agricultural production is facing a challenging transition through changing political framework conditions and climate change. Innovative field use and land management through temporal and spatial diversification measures support the political efforts to achieve the European Green Deal. However, increasing precipitation intensities through climate change are leading to an increased risk of soil erosion by water. To mitigate such risk, soil erosion should be taken into account when redesigning fields and landscapes. This paper aims to assess the present erosion risk situation in the innovative on-farm field experiment “patchCROP” with several implemented spatio-temporal crop diversification measures (field size, flower strips, crop rotation), using the physically-based Erosion 3D simulation model at the field scale. The modelling results showed that field reshaping from one large field into smaller field segments had the potential to reduce soil erosion. Flower strips reduced the sediment discharge to approximately half of that of small field segments without flower strips. However, as model results indicated, heterogeneous landscapes showed complex erosion and deposition patterns. To identify these, making use of physically based soil erosion models in new field arrangements is a critical future task.

中文翻译：

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使用模型模拟评估多样化农业景观中的土壤流失潜力

由于不断变化的政治框架条件和气候变化，农业生产正面临着具有挑战性的转型。通过时间和空间多样化措施进行创新的田间利用和土地管理，支持实现欧洲绿色协议的政治努力。然而，气候变化导致的降水强度增加导致水土流失的风险增加。为了减轻这种风险，在重新设计田地和景观时应考虑土壤侵蚀。本文旨在使用基于物理的侵蚀 3D 模拟模型，评估创新的农场田间试验“patchCROP”中目前的侵蚀风险状况，并采用几种实施的时空作物多样化措施（田地大小、花带、作物轮作）在现场规模。建模结果表明，将田地从一个大田地改造成更小的田块有可能减少土壤侵蚀。花带将泥沙排放量减少到没有花带的小田块的一半左右。然而，正如模型结果所示，异质景观显示出复杂的侵蚀和沉积模式。为了识别这些，在新的田间布置中使用基于物理的土壤侵蚀模型是未来的一项关键任务。