Case-areas-and-data.md

@@ -8,6 +8,7 @@ The selection of the test areas directly affects the reliability and stability o
 
 **Test areas**
 ![截屏2020-05-11_下午1.33.26](uploads/bf354fa370850c11d20b2e430209efde/截屏2020-05-11_下午1.33.26.png)
+<div align = center> Figure.1 test areas in the Loess Plateau</div>
 
 **Basic information about test areas**
 ![屏幕快照_2020-04-17_下午2.51.08](uploads/d786fbd0c2514fbf5b5eb6a7085f0313/屏幕快照_2020-04-17_下午2.51.08.png)