Water plant cover IJsselmeer area — aarvederweed — 2022

Water plant 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 in each part of the area, water plant cover shall be identified: in 2016 in the Markermeer and IJmeer, in 2017 in the IJsselmeer, and in 2018 in the edge lakes. NB: the Veluwemeer was not area-covered in 2018, but in a limited number of locations.For every year there is a dataset per species of aquatic plants found and a dataset with the total coverage present. These datasets are interpolated data. In addition, there is a dataset per year with the (point) locations of the field observations.In these datasets information from the years 2011 to 2018. Overall, the zone of 0-3 meters depth is calibrated. See the “Punts map field observations” layer for a view of the measuring points. Watch out! 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。本数据集针对艾瑟尔湖区域的水生植物覆盖状况实施每三年一轮的监测工作：区域内各子区块按三年周期开展水生植物覆盖识别，具体监测时序为：2016年对马肯湖（Markermeer）与伊湖（IJmeer）进行监测，2017年对艾瑟尔湖主体开展监测，2018年针对边缘湖泊实施监测。注意事项：2018年未对费吕沃湖（Veluwemeer）进行全区域覆盖监测，仅在有限数量的点位开展观测。 每年均提供两类数据集：一类为按检出水生植物物种划分的专项数据集，另一类为包含总覆盖情况的综合数据集。上述所有数据集均为插值生成数据。 此外，每年还会提供一份包含野外观测点位坐标的数据集，该数据集涵盖2011年至2018年的全部观测信息。 整体而言，0至3米水深区间的监测数据已完成校准。 可通过名为"Punts map field observations"的图层查看监测点位的分布情况。 请注意！水生植物亦可能分布于锯齿状带以外的区域。