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APPENDIX: RELATED FIGURES 
     
  
Figure 1. Fraction (i.e., RIP/RIP) Figure 4. sample-point allocation of Figure 5. Sample-point 
of winter wheat planting area in 
each pixel of 250mX250m of the 
CNP 
on Getis Order G; stratification 
I; stratification 
  
spatial sampling in the CNP, based allocation of spatial sampling 
in the CNP, based on Moran's sampling in the CNP, based on 
   
Figure 8. Sample-point 
to readjust for optimized spatial readjusted allocation of spatial allocation of spatial sampling 
Figure 6. Sample points needed Figure 7. sample-point 
in the CNP, based on 
Geary's C, stratification 
sampling in the CNP, based on 
Moran's I, stratification Moran 's I, stratification