Fig. 1. Vegetation type and distribution location of sampling points

Fig. 2. Schematic diagram of spectrometer measuring leaf spectrum

Fig. 3. Reflectance spectrum curve of different vegetation leaves

Fig. 4. First derivative spectral curve of different vegetation types
(a): First derivative spectral curve;(b): Reflectance spectrum trilateral parameters

Fig. 5. Distribution of water conservation of forest ecosystem in Bayi district

Fig. 6. Accuracy verification of water conservation forecast model
(a): Verification of picea likiangensis var. linzhiensis inversion accuracy; (b): Verification of Pimus densata inversion accuracy;(c): Verification of Quercus aquifolioides inversion accuracy; (d): Verification of Rhododendron nivale inversion accuracy

Table 1. Vegetation water conservation(t·hm^-2)

Table 2. Correlation between vegetation reflectance spectrum and water conservation

Table 3. Prediction model for water conservation capacity of different vegetation