Hai, R., Zhi’an, L., Shuguang, J., Shaolin, P., Zuoyue, Y., & Zhengfeng, W. (2004). Ecological models for rehabilitation of degraded hilly lands in Southern China. Uganda Journal of Agricultural Sciences, 9(1), 312–319. Retrieved from http://journal.naro.go.ug/index.php/ujas/article/view/235