Inspire Download Service (predefined ATOM) for nitrate retention

Description of INSPIRE Download Service (predefined Atom): The displacement of nitrate with leachate is to be regarded as a decisive factor in the risk of groundwater. It increases with the leachate rate, which results mainly from the annual water balance surplus and decreases with the dwelling time of the water in the soil and the resulting increased nitrate withdrawal by the plants. The duration of stay depends mainly on the field capacity determined for the rootable soil space. The discharge hazard is particularly influenced by potential denitrification, longer retention time in the root space (increased depletion by the plants) and a non-quantifiable lateral nitrate input or discharge by interflow at sites affected by congestion. Sites affected by congestion are therefore marked separately. In clay-rich soils that tend to form dry cracks, nitrate shifts can occur despite high field capacity in precipitation events after prolonged dry periods. Such soils (Pelosole, Terrae fuscae) are also marked. Soils made from organogenic substrates are generally characterised by a high retention capacity. Due to their increased mineralisation potential, however, a risk to groundwater (e.g. after a melioration) cannot be ruled out. These locations are also marked separately. However, the increased mineralisation potential is not taken into account in the classification. The site typing takes place according to defined criteria of the method bank of the FIS Soil/Soil Protection. Further information on methodology and evaluation is available upon request. Depending on the output purpose, the result is presented as a complex map with overlapping sub-topics or as a simple classification. The link(s) for downloading the records is/are generated dynamically from a dataURL link of a WMS layerINSPIRE下载服务（预定义Atom）说明：硝酸盐随渗滤液的运移被视为地下水污染风险的决定性影响因素。该风险随渗滤液速率升高而增强，而渗滤液速率主要源于年度水平衡盈余；同时随水分在土壤中的驻留时间延长以及由此带来的植物对硝酸盐摄取量增加而减弱。水分驻留时间主要取决于可根系土壤空间的田间持水量。淋溶危害尤其受潜在反硝化作用、根系区域更长的驻留时间（植物摄取量增加）以及难以量化的侧向硝酸盐输入，或受拥堵影响站点通过壤中流产生的硝酸盐排泄的影响。因此，受拥堵影响的站点需单独标记。在易形成干裂缝的富黏土壤中，即便田间持水量较高，在长期干旱后的降水事件中仍可能发生硝酸盐运移。此类土壤（Pelosole、Terrae fuscae）也需单独标记。由有机成因基质发育而成的土壤通常具有较高的持留能力，但由于其矿化潜力更高，仍无法排除对地下水构成风险的可能（例如在土壤改良后），此类点位也需单独标记。不过分类过程中并未考虑该矿化潜力增强的因素。点位分类依据FIS土壤/土壤保护方法库中的既定标准开展。如需了解方法学与评估细则，可另行咨询。根据输出用途的不同，结果可展示为包含重叠子主题的复合地图，或简单的分类结果。记录的下载链接由Web地图服务（WMS）图层的dataURL链接动态生成。