首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   4篇
  免费   0篇
水路运输   2篇
铁路运输   1篇
综合运输   1篇
  2013年   2篇
  2005年   1篇
  1975年   1篇
排序方式: 共有4条查询结果,搜索用时 15 毫秒
1
1.
Book review     
Onshore Planning for Offshore Oil—Lessons from Scotland by Pamela L. Baldwin and Malcolm F. Baldwin The Conservation Foundation, Washington, D.C., 1975  相似文献   
2.
Quantifying progress in management of marine protected areas (MPAs) is crucial to marine conservation and fisheries management in the Philippines. This study compiles data on the status, occurrence, and management gaps of MPAs through coordination with multiple organizations supporting and guiding MPAs in the Philippines. MPA management effectiveness was measured using a MPA Rating System. Since 2002 the modal MPA rating levels increased from level 1 (initiated) to level 4 (sustained) in 2008/9. This upward trend is attributed to factors that promoted both the establishment and improved management of MPAs. Analysis indicated that: (1) most MPAs struggle with budgetary constraints or lack of sustainable financing and (2) overall the MPAs are being maintained and progressing with notable improvement in management despite a range of difficulties encountered during the implementation process. For MPAs in the Visayan Region for which biophysical data were available, the MPA Rating System was used to assess the effectiveness of local government capacity building on MPA coral reef health. Our results suggest that MPAs with higher ratings are likely to have better reef health conditions.  相似文献   
3.
Comment   总被引:1,自引:0,他引:1  
  相似文献   
4.
澳大利亚昆士兰铁路(QR)于 2003 年 6 月 15 日采用世界上第一列窄轨(1 067 mm)内燃摆式列车,以改善北部沿海线路的运营等级。昆士兰铁路的凯恩斯摆式列车(CTT)是由负责设计、采购、制造、试验、试运行和项目管理的QR EDI/Walkers铁路联盟在昆士兰州马里伯勒的 Walkers工厂  相似文献   
1
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