created sense approved 三北防护林/三北防護林 · Sānběi Fánghùlín · Green Great Wall
三北防护林 / 三北防護林
Sānběi Fánghùlín
Green Great Wall
The Green Wall of China, a massive afforestation program on the eastern margin of the Gobi Desert aimed at stopping the desert's expansion, started in 1978 and planned to be completed by 2050.
三北防护林工程有效地改善了中国北方的生态环境。