Model Building for Regional Ecological Risk Prediction and Evaluation of Prediction Accuracy

Table 7

Calculated data of principal components.

Years	F1	F2	R
2009	−6.034	−6.932	2
2010	−3.189	−3.136	2
2011	−5.054	−0.788	2
2012	−5.747	1.584	3
2013	−3.967	2.142	2
2014	−7.239	6.229	3
2015	7.735	−1.348	2
2016	8.483	0.447	3
2017	7.537	0.575	3
2018	7.475	1.227	4