Simulating Spatiotemporal Dynamics of Sichuan Grassland Net Primary Productivity Using the CASA Model and In Situ Observations

Table 2

Validation results.

Grassland type	Validation points	Error	Precision
Alpine meadow	100	23.8%	76.2%
Alpine shrub meadow	30	33.4%	66.6%
Mountain meadow	20	43.5%	56.5%
Total	150	28.3%	71.7%