Haus Riswick grassland experiment with N fertilization and plant growth monitoring based on Unmanned Aerial Vehicle (UAV) hyperspectral imagery - campaigns of 2014 and 2017

Grassland (Lolium perenne) dry aboveground biomass, nitrogen content (N%) and N uptake (t ha-1) measured in experimental plots located near the city of Kleve, in Germany. These measurements correspond to five harvest dates, two in 2014 and three in 2017. In addition, UAV flights were performed on the same dates in the experimental site to acquire hyperspectral images, using the WageningenUR Hyperspectral Mapping System (HYMSY), a pushbroom imaging sensor comprising a spectrometer and a photogrammetric camera.

本数据集采集了德国克莱沃（Kleve）市周边试验田中多年生黑麦草（Lolium perenne）的地上干生物量、氮含量（N%）及氮吸收量（单位：吨每公顷，t ha⁻¹）的实测数据。本次测量覆盖5个收获时期，其中2014年与2017年分别为2次与3次。此外，研究团队于同期在试验场地开展无人机（Unmanned Aerial Vehicle, UAV）航测作业，使用瓦赫宁根大学与研究中心高光谱测绘系统（WageningenUR Hyperspectral Mapping System, HYMSY）——一款集成光谱仪与摄影测量相机的推扫式成像传感器（pushbroom imaging sensor）——获取高光谱影像。