Traditional Culture Encyclopedia - Weather forecast - Statistical table of dust weather and tree planting in a certain area from 2000 to 2005 (year) 2000 20012002 2003 2004 2005

Statistical table of dust weather and tree planting in a certain area from 2000 to 2005 (year) 2000 20012002 2003 2004 2005

( 1)( 15+ 1 1+8+3+5+6)÷6

=48÷6,

=8 (times);

(400+300+200+50+30+ 100)÷6,

= 1080÷6,

= 180 (hectare);

A: From 2000 to 2005, sandstorms occurred eight times a year on average in this area, and trees were planted 1.80 hectares per year on average.

(2) Dust weather histogram: