Academy;
of;
Social;
Management,Beijing;
Normal;
University,Beijing;
100875,;
China;
of;
Public;
Policy;
and;
Management,Tsinghua;
University,Tsin-ghua;
University,;
Beijing;
100084,;
China;
Center;
for;
International;
Economic;
Exchange,Beijing;
100017,;
China;
of;
Goverment,Peiking;
University,Beijing;
100871,;
China;
非政府组织; 气候变化; 生态系统; 美国; 网络分析; 环境问题; 多样性;