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Land ownership and 20th century changes to forest structure in California 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 422: 137-146
作者:  Easterday, Kelly;  Mclntyre, Patrick;  Kelly, Maggi
收藏  |  浏览/下载：4/0  |  提交时间：2019/04/09
Forest structure  Forest change  Land management  Land ownership  California  Vegetation Type Mapping (VTM)  
Different behaviors in natural gas production between national and private oil companies: Economics-driven or environment-driven? 期刊论文
ENERGY POLICY, 2018, 114: 145-152
作者:  Gong, Binlei
收藏  |  浏览/下载：1/0  |  提交时间：2019/04/09
Oil and gas companies  Efficiency analysis  Stochastic frontier  Natural gas ratio  Ownership structure