Response of plant functional groups to different grazing management systems in summer grasslands on the northern slope of Tianshan Mountains

• ZHANG Jing, 
• SUN Qiang, 
• Jiashaer, 
• ZHENG Wei, 
• ZHAO Yan, 
• Sakedate·Kadilaite, 
• CONG Yingli, 
• Wulazi·Shalike, 
• Hezierbieke·Mutayier