Inspire Download Service (predefined ATOM) for dataset usable field capacity in rootable soil space

Description of INSPIRE Download Service (predefined Atom): The usable field capacity (nFK) of a soil or horizon is the part of the field capacity available for vegetation. It thus includes the amount of water that a groundwater distant horizon in natural storage can withhold against gravity at suction voltages of pF 1,8-4.2 after sufficient saturation. The calculation is first for each horizon. The results are added and classified to 100 cm depth or the rootable soil space (dB). The method represents the representative nFK of the respective depth level. — The link(s) for downloading the records is/are generated dynamically from Download Link from a metadata recordINSPIRE下载服务（预定义Atom格式）说明：土壤或土层的有效田间持水量（usable field capacity，缩写nFK）指可供植被利用的田间持水量组分。其涵盖了充分饱和后，距地下水较远的土层在自然储水条件下，于pF值1.8~4.2的吸力条件下可对抗重力保持的水量。 计算首先针对单个土层展开。 将各土层的计算结果累加，并按100厘米深度或可根系生长土壤空间（dB）进行分级。 该方法可表征对应深度层级的代表性nFK值。 —— 数据记录的下载链接将根据元数据记录中的下载链接动态生成。