NERO line NDVI

The NERO line is a permanent vegetation transect crossing all the dominating vegetation types found in the study area. The progression in the vegetation greenness (Normalized Difference Vegetation Index; NDVI) is followed on the NERO line one to two times per month throughout the snowfree season. NDVI is measured by a Crop Circle Handheld System and scans are conducted by moving the sensor steadily forward (ca. 1 meter per second) approximately 75 cm above the vegetation. This results in a measuring footprint of approximately 10 x 45 m. For further details, please refer to the newest BioBasis manual available at the website.NERO样带为固定植被样带，横穿研究区内所有优势植被类型。在整个无雪季，每月会对NERO样带的植被绿度（归一化差分植被指数，Normalized Difference Vegetation Index，NDVI）变化开展1至2次监测。NDVI数据由Crop Circle手持系统采集，测量时以约1米每秒的速度匀速移动传感器，使其距植被冠层约75厘米完成扫描。该测量方式的覆盖范围约为10×45米。如需获取更多细节，请访问官网查阅最新版BioBasis操作手册。