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1.
本文应用完全因素分解模型对中国1985年到2008年生产性能源消费量的变动进行分解。生产性能源消费指排除生活能源消费的用于各行业生产所投入的能源消费。能源消费量的变动分解为三种效应:由于整体经济的增长带来的经济规模效应、产业结构变动带来的结构效应和技术进步的效率效应。创新之处在于应用因素分解模型进行能源消费量变动的研究。 实证结果表明:24年来,实际GDP带来的经济规模效应是使得能源消费不断上升的最主要因素,效率效应的作用与经济规模效应相反,对于控制能源消费的增长起到了较大并且积极的作用,产业结构的调整对能源消费的控制并没有起到积极的作用。  相似文献   

2.
我国工业经济能源消费是碳排放的主要来源.以广东省为例,从碳排放总量和碳排放强度等指标分析了1990—2011年广东省工业经济能源消费碳排放的现状与特征;用LMDI分解技术,将广东省工业经济能源消费碳排放因素分解为能源结构效应、能源强度效应、经济增长效应和人口规模效应4种因素;定量分析表明:经济增长效应是广东省工业经济能源消费碳排放增长的主导促进因素,人口规模效应为次主导促进因素;能源强度效应是广东省工业经济能源消费碳排放增长的主导抑制因素,能源结构效应是次主导抑制因素.  相似文献   

3.
应用完全因素分解模型对中国1985年到2008年生产性能源消费量的变动进行分解。能源消费量的变动分解为三种效应:由于整体经济的增长带来的经济规模效应、产业结构变动带来的结构效应和技术进步的效率效应。实证结果表明:24年来,实际GDP带来的经济规模效应是使得能源消费不断上升的最主要因素;效率效应的作用与经济规模效应相反,效率效应对于控制能源消费的增长起到了较大并且积极的作用;产业结构的调整对能源消费的控制并没有起到积极的作用。  相似文献   

4.
利用2001—2017年相关数据,对长江经济带、上中下游以及11个省市能源消费开展驱动因素分解,研究结果表明,经济发展、能源消费强度、人口规模和产业结构效应是影响能源消费变化的主要因素,但是驱动因素的作用方向不同,空间差异明显。经济发展是能源消费量增长的主要因素,能源消费强度效应对抑制能源消费效果显著,人口规模效应、产业结构效应拉动作用较弱。未来应从加快产业结构升级、推进节能减排、推行低碳生活方式等方面分区施策,积极应对,减少能源消费。  相似文献   

5.
中国未来能源需求趋势分析   总被引:4,自引:0,他引:4  
为给中国能源发展规划提供参考,分析预测了中国未来能源需求状况。采用了国际间比较分析的方法,对不同国家在不同发展阶段人均国民生产总值(GDP)与人均能源消费总量、GDP能源消费强度、人均电力消费、交通用能之间的关系进行分析。结果表明,随着中国未来经济的发展,中国能源消费总量还将大幅度增长;中国未来GDP能源强度还有一定的下降空间,电力消费和油品消费在终端能源中的比例将进一步提高。  相似文献   

6.
基于时间序列模型,研究了中国物流业能源消费问题.研究结果显示:物流业的能源消费增速较快,在承担大量货运业务的同时也消费了大量的能源;物流业能源消费、进出口贸易、物流业发展水平之间存在协整关系,后两者对物流业能源消费的影响较大且显著,从Granger因果关系来看,进出口贸易不是而物流业发展水平才是物流业能源消费的Granger原因;在电子商务时代,内需消费得到了拉动,但也略微拉大了物流业的能源消费.建议各地方政府合理规划交通运输设施建设,努力扩大外贸依存度,改善物流业的能源利用效率.  相似文献   

7.
为了研究中国能源消费与经济增长之间的关系,通过分析目前中国能源消费及经济增长的现状,发现两者具有一定的相关性;对国内生产总值和能源消费量数据采用平稳性检验,检验表明能源消费和国内生产总值均为二阶差分平稳变量;格兰杰因果检验结果表明GDP是能源消费的的格兰杰原因,而能源消费不是GDP的格兰杰原因,GDP每增加1%,就会增加0.546557%的能源消费;通过构建误差修正模型对中国1990~2017年能源消费与经济增长的关系进行实证分析,发现误差修正机制会将偏离均衡的状态负向调整至均衡。基于对这些结果的分析表明,中国的经济发展定会促进能源消费增长,但是能源消费不一定会促进经济发展。  相似文献   

8.
都新英 《科技信息》2011,(34):30-31,33
河南省作为我国能源开发和消费大省,能源工业取得了长足发展,能源产业结构不断优化,为全省经济的持续快速的发展提供了有力保障。但是,随着河南省经济的快速发展,能源消费总量及人均能源消费迅猛增长,这种传统的能源消费结构给环境造成了巨大的压力,给河南省经济可持续发展、创造和谐社会设置了很大的障碍。因此要不断开发、利用新能源,使新能源在能源消费与供给比例中不断提高。  相似文献   

9.
在利用IPCC提供的参考方法对中国大陆30个省区(不包括西藏)1997~2012年能源消费碳排放量估算、分析的基础上,采用LMDI分解模型将碳排放的影响因子分解为人口规模效应、经济发展效应、能源强度效应、能源结构效应以及城乡人口结构效应和人均能源消费效应,并对江苏、河南、内蒙古和重庆4省区的碳排放驱动因素进行了实证分解.结果表明:中国各省域碳排放量和人均碳排放量均呈上升趋势,但增加幅度各省区明显不同;CO2排放强度存在明显的省区差异,表现为东部省份中部省份西部省份,除青海、宁夏和海南3省碳排放强度仍在增加外,其他各省区均呈下降趋势;经济发展、人口规模、城市化水平对碳排放表现为正向效应,能源强度、能源结构则表现为负向效应,其中经济发展对4省区能源消费碳排放正向效应最大,而能源强度对4省区碳排放负向效应最大;乡村人口比例、城乡人均能源消费量对4省区碳排放量的影响有限且存在较弱的正负波动.  相似文献   

10.
张馨 《科技与经济》2014,27(5):90-94
通过信息熵的引入,分析了陕西1985—2010年生产能源消费结构的动态演变规律,并探索产业结构演进对能源消费变动的驱动效应。结果表明:陕西以煤炭为主导的生产能源消费结构逐步转向多种能源综合利用的方向发展。生产能源消费结构的熵值从1985年的0.861上升到2010年的1.305,总体呈波动上升的趋势,能源消费在结构演替的过程中趋于平衡状态。从能源消费变动与产业结构演进的关联来看,数量的变动呈现出先倒"U"型后线性增长的趋势,结构的变动呈现先快速上升后稳步增长并趋于收敛的趋势。这些特征从侧面也反映了中国生产能源消费结构的演进趋势,从而为能源可持续利用提供政策依据。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

13.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

14.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

15.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

16.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

17.
本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。  相似文献   

18.
There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.  相似文献   

19.
20.
The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to  相似文献   

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