The biomass yield and the crude protein (CP) content of temperate agroforestry-grassland were compared with that of a treeless control between 2017 and 2021. The single factor cropping system did not determine differences in yield nor CP content, while significant interactions with other studied factors occurred. At 1 m from the field edge, grassland yield was significantly lower in both the agroforestry system and the treeless control than at the other distances studied (4, 7, and 24 m). Overall, grassland yields were similar in agroforestry and control. The CP results were inconclusive. The highest, although not significant, CP levels were found in the agroforestry variant 1 m distance from the tree strip. Our study shows that due to edge effects on biomass yields, which may also occur in the treeless control, sampling of identical distances in agroforestry and control are necessary.

将 2017 年至 2021 年温带农林业-草地的生物量产量和粗蛋白 (CP) 含量与无树对照进行比较。单因素种植制度并未确定产量或粗蛋白含量的差异，但与其他研究的显着交互作用因素发生。在距田地边缘 1 m 处，农林业系统和无树对照中的草地产量均显着低于其他研究距离（4、7 和 24 m）。总体而言，农林业和对照的草地产量相似。CP 结果尚无定论。距离林带 1 m 的农林业变体中发现了最高的 CP 水平，尽管并不显着。我们的研究表明，由于生物量产量的边缘效应（这也可能发生在无树对照中），因此有必要在农林业和对照中进行相同距离的采样。