...生态系统恢复 总经济价值 非参数估计 额济纳旗 [gap=2073]Keywords】: contingent valuation method,willingness to pay,ecosystem restoring,total economic value,non-parametric estimation,Ejina Banner ..
基于8个网页-相关网页
restoring ecosystem 重建生态系统
·2,447,543篇论文数据，部分数据来源于NoteExpress
The protected areas limit both commercial and recreational fishing in hopes of restoring the coastal ecosystem.
NPR: California Cuts Coastal Fishing to Restore Ecosystem
"This a great victory that will help us go forward in restoring the wolves and their ecosystem, " said Lois Schiffer, assistant attorney general for the Environment and National Resources Division.
CNN: Appeals court ruling protects wolves in Yellowstone
应用推荐
模块上移
模块下移
不移动