natural ecological resources 自然生态资源
natural and ecological resources 自然生态资源
Metallurgical Resources and Ecological Environment 冶金资源与生态环境
ecological tourist resources 生态旅游资源
ecological tourism resources 生态旅游资源
ecological environment resources 生态环境资源
Dalian ecological tourism resources 大连生态旅游资源
ecological tour resources of Hainan 海南生态旅游资源
resources and ecological environment 资源与生态环境
forest resources and ecological balance 森林资源与生态平衡
Non-use value is an inherent attribute of ecosystem. To scientifically and rationally evaluate this value is of significance in managing and properly allocating ecological resources.
非使用价值是生态系统的内在属性,科学合理地评价该价值对生态资源管理和合理配置具有重要意义。
参考来源 - 北京市湿地生态系统非使用价值·2,447,543篇论文数据，部分数据来源于NoteExpress
应用推荐