Fig. 3From: Mapping the forage nitrogen, phosphorus, and potassium contents of alpine grasslands by integrating Sentinel-2 and Tiangong-2 dataAnalysis of the relative importance of different forage nutrient differences to Tiangong-2 MWI (a) and Sentinel-2 MSI (b) spectral bands. For comparison, the importance of both MSI and MWI spectral bands for nitrogen, phosphorus, and potassium was normalized to between 0 and 1. TG Tiangong-2, S2 Sentinel-2Back to article page