On the cover: Pulp and paper industry by?products can be a viable measure for erosion mitigation. The field experimental site of Natural Resources Institute Finland at the catchment of the river Loimijoki southwest Finland. See K. Rasa et al., “Pulp and paper mill sludges decrease soil erodibility,” https://doi.org/10.1002/jeq2.20170. Photo by Jaakko Heikkinen.

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封面图片，第50卷，第1期

封面：纸浆和造纸工业的副产品可以作为减轻侵蚀的可行措施。芬兰自然资源研究所的野外实验地点位于芬兰西南部Loimijoki河的汇水处。参见K. Rasa等人，“纸浆和造纸厂的污泥会降低土壤的侵蚀性”，https：//doi.org/10.1002/jeq2.20170。Jaakko Heikkinen摄。