首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 234 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
Doyle cogently describes advantages and concerns related to the system of United States river management in the context of its historical and political development. He rightly asserts the need for flexible, adaptable institutions in order to address changing societal demands. However, river management also requires certain inflexible standards in order to discern and prevent practices that undermine future human needs. Where modern scientific evidence converges with cultural traditions of stewardship, river managers can comfortably assert limits to specific patterns of use and to the malleability of restrictions.  相似文献   

17.
18.
19.
20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号