Land use change and its eco-environmental effects on vulnerable desert margin areas: A case study from Yanchi County in Ningxia

• LIU Shuqin, 
• BAI Cunlin, 
• BIAN Zhen, 
• AN Tianyu, 
• XIA Chaozong, 
• HOU Ruiping, 
• CHEN Jian, 
• ZHANG Ming, 
• ZHANG Kebin