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绥化地区退化防护林生境保护对策初探
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作者 李春良 《林业勘查设计》 2019年第4期35-37,共3页
从生态环境保护、生物多样性保护和林业有害生物防治与外来入侵物种控制三个方面对绥化市退化防护林采取的对策进行初探,并简述了绥化市退化防护林生境保护取得的初步成果。
关键词 退化防护林 生境保护 生境保护对策
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Environmental Effects of Foreign Trade and Its Spatial Variations in Mid-eastern Provinces and Cities of China
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作者 JIN Xianfeng DONG Suocheng +4 位作者 LUO Lingjun LI Yu YUAN Chao SHU Kesheng CHEN Jiaquan 《Chinese Geographical Science》 SCIE CSCD 2012年第5期626-636,共11页
The studies on environmental effects of foreign trade and its spatial variations are helpful to design and implement environmental protection countermeasures.In order to eliminate the adverse effects of insufficient o... The studies on environmental effects of foreign trade and its spatial variations are helpful to design and implement environmental protection countermeasures.In order to eliminate the adverse effects of insufficient observation values on the accuracy of regression results and dynamic information quantity of fitting equation during empirical study,panel data of the mid-eastern provinces and cities of China from 1985 to 2007 were selected based on the adjustment of classical regression model in this paper.Panel unit root test and panel cointegration analysis method were applied to investigating the environmental effects of foreign trade and its spatial variations in the mid-eastern provinces and cities of China and its three groups divided by foreign trade dependence.The results show that all scale effects are positive,while all technical effects are negative and unable to counteract positive scale effects.Foreign trade development is regarded as an important cause for outstanding eco-environmental problems in the mid-eastern provinces and cities of China.Total effects and structural effects are significantly different among different groups because of spatial variations in environmental policies,export destinations,source of FDI,etc.Following the principle of′coordinating generality and considering differences comprehensively′,it is essential to issue a series of policies and countermeasures corresponding to differences in regional environmental effect of foreign trade,in order to coordinate the relationship between foreign trade development and eco-environment in each region. 展开更多
关键词 mid-eastern provinces and cities of China foreign trade environmental effect spatial variation cointegra-tion analysis
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