Water Plant Cover Ijsselmeer area — Waternet — 2013

Waterplant cover IJsselmeer area. The water plant cover in the IJsselmeer area is monitored every three years. That is to say, in a three-year cycle, the aquatic plant cover is identified in each part of the area: in 2016 in the Markermeer and IJmeer, in 2017 in the IJsselmeer, and in 2018 in the edge lakes. N.B.: the Veluwemeer was not covered in 2018 but in a limited number of locations.For each year there is a dataset per species of aquatic plants found and a dataset with the total coverage present. These datasets concern interpolated data. In addition, there is a dataset per year with the (point) locations of the field observations.In this dataset, information from the years 2011 to 2018. Overall, the zone of 0-3 meters depth is serrated. See the “Point Map field observations” layer for a view of the measuring points. Watch it! Aquatic plants can also occur outside the serrated zone.艾瑟尔湖（IJsselmeer）区域水生植物覆盖数据集。该区域的水生植物覆盖状况每三年开展一次周期性监测，即每三年为一个监测周期，对区域内各片区的水生植物覆盖情况开展全面识别：2016年完成马肯湖（Markermeer）与伊米尔湖（IJmeer）的监测，2017年完成艾瑟尔湖主湖区的监测，2018年完成周边边缘湖泊的监测。 备注：2018年未对费吕沃湖（Veluwemeer）开展全域监测，仅在少量限定点位进行了观测。 每一年的监测数据包含两类数据集：一类为各检出水生植物物种的分布数据集，另一类为区域总覆盖度数据集。上述数据集均为插值生成数据。 此外，每年还附带一份包含野外实地观测点位坐标的数据集。本数据集涵盖2011年至2018年的相关监测信息。 整体而言，0至3米水深的水域范围呈锯齿状分布特征。可通过"野外观测点位图（Point Map field observations）"图层查看所有监测点位的分布情况。 请注意：水生植物也可能在该锯齿状划定区间以外的区域生长。