1. Ai, F., & Li, Z. (2013). China builds “Green Wall” with hard work, so “sand is in retreat and people are advancing”. Xinhua Net (Ningxia), August 19.
http://www.nxnews.net/wj/system/2013/09/03/010941528.shtml
Accessed September 27, 2014. (in Chinese).
2. Belaaz, M. (2003). Le barrage vert en tant que patrimoine naturel national et moyen de lutte contre la désertification. In Proceedings of the XII World Forestry Congress, Quebec, Canada, September 21–28, 2003.
3. Cao, S. (2008). Why large-scale afforestation efforts in China have failed to solve the desertification problem. Environmental Science & Technology, 1826–1831.
4. Cao, S., Tian, T., Chen, L., Dong, X., Yu, X., & Wang, G. (2010). Damage caused to the environment by reforestation policies in arid and semi-arid areas of China. Ambio, 39, 279–283.
5. CCICCD (China National Committee for the Implementation of the UNCCD). (2006). China national report on the implementation of the United Nation Convention to Combat Desertification. Beijing. (in Chinese).