Risk subsurface compaction

This grid file (with cell size 25x25 m) provides information on the risk of subsurface compaction in relation to land use in five classes for the whole of the Netherlands. A healthy soil consists of solid components and sufficient pores. These pores are important for the transport of air and water through the soil and for plant roots. In soil compaction, for example due to too high wheel loads, the pore volume decreases. In case of too strong soil compaction, the permeability and moisture storage capacity of the soil will decrease. This can lead to flooding (e.g. pudding) and superficial flow, peak load at polder ground and inundation of low soils. There is also a higher risk of flushing of nutrients and plant protection products to surface water. A compacted soil is not or difficult to root, which reduces the crop yield.本网格文件的网格单元尺寸为25×25米，针对荷兰全境，按五个等级提供了与土地利用相关的土壤地下压实风险信息。健康土壤由固相组分与充足孔隙组成，这些孔隙对于土壤内部空气与水分的运移以及植物根系的生长至关重要。土壤压实（例如因轮载过高引发）会导致孔隙体积缩减；当土壤压实程度过高时，其渗透性与持水能力均会下降。这可能引发渍涝（如田面泥泞）与地表径流，造成圩田地面峰值荷载以及低地土壤淹没，同时还会提升养分与植物保护药剂被冲刷进入地表水体的风险。压实土壤会阻碍植物根系扎根甚至完全抑制根系生长，最终导致作物产量下降。