Effects of tourism disturbance and altitudinal gradient on leaf and soil ecological stoichiometry of a mountain meadow in Altai Mountains, China

• HAO Shuai, 
• ZHENG Wei, 
• ZHU Yaqiong, 
• WANG Rui, 
• QIAO Zimei, 
• LIU Yuehan, 
• Ailifeire