Impact of the grassland ecological compensation policy on household livelihood and vegetation coverage: A case study in Gannan Tibetan Autonomous Prefecture

• ZHAO Zhenyuan, 
• ZHANG Xiaolei, 
• LI Guomei, 
• FAN Wentao, 
• CUI Xia, 
• LI Chongyang, 
• Jiayangdongzhi, 
• Danbadunzhu, 
• TANG Zeng