Green mining and the formation of an effective and efficient development model have become key issues that aggregates enterprises around the world need to solve urgently.On the basis of analyzing the development statu...Green mining and the formation of an effective and efficient development model have become key issues that aggregates enterprises around the world need to solve urgently.On the basis of analyzing the development status of aggregates industry in Xiluodu area,the paper studied the main problems faced in the construction of green aggregates mines at present,and proposed a"three-in-one"ecological,intelligent and efficient green mine construction model for"ecological development","green logistics"and"solid waste recycling"of aggregates.The study has certain theoretical value and practical significance for the construction of green aggregates mine in Xiluodu area.展开更多
Improving the efficiency with which natural resources are utilized is an indispensable for achieving sustainable development and carbon neutrality. By analyzing the utilization efficiency of energy, water, and land, w...Improving the efficiency with which natural resources are utilized is an indispensable for achieving sustainable development and carbon neutrality. By analyzing the utilization efficiency of energy, water, and land, we established a comprehensive natural resource utilization efficiency index(NRUEI). We then calculated the 2016 index for 165 cities in China,and investigated what caused it to vary. We found three main results:(1) the NRUEI varied greatly across China and there were significant positive correlations between urban energy utilization efficiency(EUE), water utilization efficiency(WUE) and land utilization efficiency(LUE);(2) the NRUEI showed a significant positive correlation with a city’s population size,economy(Gross Domestic Product(GDP)), and the level of urban social development(GDP per capita);(3) cities in East China have the highest natural resource utilization efficiency,while cities in Northeast China have the lowest. These results indicate that China’s increasing urban development is associated with rising natural resource utilization efficiency and that the city’s endowment of natural resources is an important factor affecting that efficiency. Further, the results showed that the determinants of a city’s NRUEI differed in large and small cities. Lastly, our results suggest that improving EUE is key for improving NRUEI in urban China, and different efficiencies can be improved intertwined. A major takeaway of this study is that there is great potential for improving natural resource utilization efficiency in Chinese cities and we include city-specific suggestions for efficiency improvements.展开更多
Land spaces function in capacities of urban development,agricultural production,and ecological conservation,among many others.Research of land space utilization efficiency(LSUE)and coupling coordination relationships ...Land spaces function in capacities of urban development,agricultural production,and ecological conservation,among many others.Research of land space utilization efficiency(LSUE)and coupling coordination relationships among its subsystems are significant for sustainable land space development.In this study,taking the Urban Agglomeration in the Middle Reaches of the Yangtze River(UAMRYR)as the study area,we establish a measurement index system to evaluate the LSUE(2000–2018)and analyze its coupling coordination degree by utilizing an improved coupling coordination model.The main results include the following.(1)The average efficiency levels of urban space and agricultural space in the UAMRYR increased 2000–2018,while the average efficiency of ecological space declined.(2)The spatial pattern of the LSUE values varied greatly,with the distributions of high-efficiency and low-efficiency levels significantly different.(3)The coupling degree of LSUE includes three types,i.e.,high-level coupling,break-in,and antagonism.Each coupling degree type was characterized by change over time.(4)The proportion of areas with high coupling coordination and moderate coupling coordination increased from 2000 to 2018,while the proportion of areas with basic coupling coordination,moderate imbalance,and serious imbalance declined during this period.Given that the spatial differentiation of the LSUE and its coupling coordination,it is necessary to implement a differential land space development strategy in the UAMRYR.This study is helpful to promote the efficient utilization and coordinated development of land space utilization systems.展开更多
In recent years,deep marine carbonate gas reservoirs have become an important field in increasing conventional gas reserves and production in the Sichuan Basin.Due to complex hydrocarbon accumulation conditions,great ...In recent years,deep marine carbonate gas reservoirs have become an important field in increasing conventional gas reserves and production in the Sichuan Basin.Due to complex hydrocarbon accumulation conditions,great burial depth and complicate gas-water relation,however,this type of gas reservoirs faces huge challenges to realize efficient development.In this paper,the development history of deep marine carbonate gas reservoirs in the Sichuan Basin was analyzed.Then,based on such development characteristics and practices,special technologies were summarized.Finally,the research direction for the coming years was pointed out.And the following research results were obtained.First,the reserves of the deep marine carbonate gas reservoirs in the Sichuan Basin vary greatly in scales and types.The reservoirs are of poor quality and strong heterogeneity with active edge and bottom water.The raw gas generally contains acidic gas.What's more,most development wells are located in mountainous areas,and drilled formations are complicated in vertical distribution.Second,special technologies have been formed in the Sichuan Basin,including the fine description technology for strong-heterogeneity gas reservoirs in deep low-gentle structures,the optimized water control technology for the water-bearing gas reservoirs with developed small-scale fractures and vugs,drilling,completion and stimulation engineering technologies for deep complex gas wells,and the support technology for clean and safe development of sulfur-bearing gas reservoirs,so as to provide support for the efficient productivity construction and optimized development of giant marine carbonate reservoirs in the Sichuan Basin.Third,as the development of the carbonate gas reservoirs in the Sichuan Basin begins to convert into the gas reservoirs in ultra-deep complex structures,the next direction of technological research is the fine structure description and thin reservoir prediction technique,across-scale numerical simulation technique,drilling and completion and gas production engineering technique for deep marine carbonate gas reservoirs.It is concluded that these special technologies for the efficient development of deep marine carbonate gas reservoirs provides powerful support for PetroChina Southwest Company to build up giant gas fields with the reserves of tens of billions of cubic meters and realize the leaping growth of gas production.The research results can provide valuable technical reference for the development of deep marine carbonate gas reservoirs at home and abroad.展开更多
The increase of atmospheric carbon dioxide and the global warming due to its greenhouse effect resulted in worldwide concerns. On the other hand, carbon dioxide might be considered as a valuable and renewable carbon s...The increase of atmospheric carbon dioxide and the global warming due to its greenhouse effect resulted in worldwide concerns. On the other hand, carbon dioxide might be considered as a valuable and renewable carbon source. One approach to reduce carbon dioxide emissions could be its capture and recycle via transformation into chemicals using the technologies in C1 chemistry. Despite its great interest, there are difficulties in CO2 separation on the one hand, and thermodynamic stability of carbon dioxide molecule rendering its chemical activity low on the other hand. Carbon dioxide has been already used in petrochemical industries for production of limited chemicals such as urea. The utilization of carbon dioxide does not necessarily involve development of new processes, and in certain processes such as methanol synthesis and methane steam reforming, addition of CO2 into the feed results in its utilization and increases carbon efficiency. In other cases, modifications in catalyst and/or processes, or even new catalysts and processes, are necessary. In either case, catalysis plays a crucial role in carbon dioxide conversion and effective catalysts are required for commercial realization of the related processes. Technologies for CO2 utilization are emerging after many years of research and development efforts.展开更多
According to growth pole theory, this paper puts forward that when allocating regional science and technology (S&T) innovation resources based on S&T program, should abide the principle that important area rec...According to growth pole theory, this paper puts forward that when allocating regional science and technology (S&T) innovation resources based on S&T program, should abide the principle that important area receives priority support; Meanwhile, it designs method to ascertain district S&T advantage and S&T innovation resources utilizing efficiency as well as S&T developing speed by using component analysis and DEA method, and then constructs three-dimension selecting model,by which a positive research on Heilongjiang is made, the purpose of which is to offer scientific method support and decision-making foundation for making regional S&T program.展开更多
In the modern industrial system,the metallurgical and chemical industry occupies a pivotal position,providing key basic materials for many felds.However,for a long time,the traditional metallurgical and chemical produ...In the modern industrial system,the metallurgical and chemical industry occupies a pivotal position,providing key basic materials for many felds.However,for a long time,the traditional metallurgical and chemical production model has overly relied on a large amount of resource input,resulting in low resource utilization in ore mining,metal smelting,and other processes,leading to significant waste of resources.At the same time,a large amount of pollutants such as exhaust gas,wastewater,and waste residue generated during the production process are discharged,causing a heavy burden on the ecological environment.Environmental problems such as acid rain,water pollution,and soil heavy metal pollution occur frequently,seriously affecting ecological balance and human health.In the context of increasingly scarce global resources and stringent environmental requirements,it is urgent to seek efficient resource utilization and clean production technologies in metallurgical and chemical processes.These technologies are not only key means to alleviate resource crises and improve environmental quality,but also the core driving force for promoting the transformation and upgrading of the metallurgical and chemical industry,achieving sustainable development,and having immeasurable significance for ensuring the long-term stable development of the industry and the virtuous cycle of the earth's ecological environment.展开更多
【目的】随着塑料制品带来的污染问题日益严重,人们的环保意识逐渐增强。基于中国丰富的竹资源和竹产业优势,本研究剖析“以竹代塑”发展现状,明确竹产业链中竹资源高效培育及发展的优势与面临的挑战,旨在引导科研机构与企业聚焦关键技...【目的】随着塑料制品带来的污染问题日益严重,人们的环保意识逐渐增强。基于中国丰富的竹资源和竹产业优势,本研究剖析“以竹代塑”发展现状,明确竹产业链中竹资源高效培育及发展的优势与面临的挑战,旨在引导科研机构与企业聚焦关键技术攻关,加大研发投入以促进竹培育技术创新和提高竹资源利用效率及产品质量,提升竹产业整体竞争力。【方法】检索中国知网(CNKI)和Web of Science核心集(WoS)近15年(2010—2024年)与“以竹代塑”和“竹资源”相关的研究文献,应用VOSviewer对目前研发的竹种、研究热点等进行知识图谱可视化分析,同时对全国26个重点竹产区开展问卷调查和实地调研,解析竹资源高效培育利用现状及面临的挑战。【结果】近15年来,有关“以竹代塑”和“竹资源”的研究呈蓬勃发展态势,热点聚焦竹子的生物学特性、竹材的物理化学性质以及力学性质等方面。我国发展“以竹代塑”的核心优势明显,如资源禀赋突出、产业发展迅速、经济效益明显、各级政策支持等,但竹资源高效培育面临着主要瓶颈问题,如监测粗放、种质开发不足等,为此提出种质创新、低产林改造、设施升级等发展路径。【结论】未来应重点建设竹类种质资源库,定向培育高价值“代塑”竹种;着力改造低产低效竹林,因地制宜建立高标准竹林地示范区;科学规划并完善竹林基地道路、蓄水灌溉等基础设施,创新竹林优质原料供给与先进经营管理模式,为生态文明建设、社会经济发展、乡村振兴及“双碳”目标达成提供竹业支撑。展开更多
Sustainable development strategy is the only choice for steel companies in China. Starting with environment protection, energy-saving and integrated resource utilization, supported by technology advancement and enviro...Sustainable development strategy is the only choice for steel companies in China. Starting with environment protection, energy-saving and integrated resource utilization, supported by technology advancement and environmental investment, sustainable development strategy can be implemented to drive the circular economy. Thereby, the responsibility to realize the long-term harmony and synergy between society and enterprises is taken by Baosteel.展开更多
文摘Green mining and the formation of an effective and efficient development model have become key issues that aggregates enterprises around the world need to solve urgently.On the basis of analyzing the development status of aggregates industry in Xiluodu area,the paper studied the main problems faced in the construction of green aggregates mines at present,and proposed a"three-in-one"ecological,intelligent and efficient green mine construction model for"ecological development","green logistics"and"solid waste recycling"of aggregates.The study has certain theoretical value and practical significance for the construction of green aggregates mine in Xiluodu area.
基金supported by the National Natural Science Foundation of China (Nos. 42101290 and 71533005)the Special Project on National Science and Technology Basic Resources Investigation of China (No. 2021FY100703)。
文摘Improving the efficiency with which natural resources are utilized is an indispensable for achieving sustainable development and carbon neutrality. By analyzing the utilization efficiency of energy, water, and land, we established a comprehensive natural resource utilization efficiency index(NRUEI). We then calculated the 2016 index for 165 cities in China,and investigated what caused it to vary. We found three main results:(1) the NRUEI varied greatly across China and there were significant positive correlations between urban energy utilization efficiency(EUE), water utilization efficiency(WUE) and land utilization efficiency(LUE);(2) the NRUEI showed a significant positive correlation with a city’s population size,economy(Gross Domestic Product(GDP)), and the level of urban social development(GDP per capita);(3) cities in East China have the highest natural resource utilization efficiency,while cities in Northeast China have the lowest. These results indicate that China’s increasing urban development is associated with rising natural resource utilization efficiency and that the city’s endowment of natural resources is an important factor affecting that efficiency. Further, the results showed that the determinants of a city’s NRUEI differed in large and small cities. Lastly, our results suggest that improving EUE is key for improving NRUEI in urban China, and different efficiencies can be improved intertwined. A major takeaway of this study is that there is great potential for improving natural resource utilization efficiency in Chinese cities and we include city-specific suggestions for efficiency improvements.
基金National Natural Science Foundation of China,No.42171249,No.42201270National Social Science Foundation of China,No.20BJY119Jiangsu Social Science Foundation,No.18GLC016。
文摘Land spaces function in capacities of urban development,agricultural production,and ecological conservation,among many others.Research of land space utilization efficiency(LSUE)and coupling coordination relationships among its subsystems are significant for sustainable land space development.In this study,taking the Urban Agglomeration in the Middle Reaches of the Yangtze River(UAMRYR)as the study area,we establish a measurement index system to evaluate the LSUE(2000–2018)and analyze its coupling coordination degree by utilizing an improved coupling coordination model.The main results include the following.(1)The average efficiency levels of urban space and agricultural space in the UAMRYR increased 2000–2018,while the average efficiency of ecological space declined.(2)The spatial pattern of the LSUE values varied greatly,with the distributions of high-efficiency and low-efficiency levels significantly different.(3)The coupling degree of LSUE includes three types,i.e.,high-level coupling,break-in,and antagonism.Each coupling degree type was characterized by change over time.(4)The proportion of areas with high coupling coordination and moderate coupling coordination increased from 2000 to 2018,while the proportion of areas with basic coupling coordination,moderate imbalance,and serious imbalance declined during this period.Given that the spatial differentiation of the LSUE and its coupling coordination,it is necessary to implement a differential land space development strategy in the UAMRYR.This study is helpful to promote the efficient utilization and coordinated development of land space utilization systems.
基金Project supported by the National Major Science and Technology Project“Demonstration Project of Development of Large Carbonate Gas Fields in the Sichuan Basin”(No.:2016ZX05052)Scientific Research and Technological Development Project of PetroChina Company Limited“Research and Application of Key Technologies for 30 Bcm-level Gas Production in the Southwest Oil&Gas Field”(No.:2016E-06).
文摘In recent years,deep marine carbonate gas reservoirs have become an important field in increasing conventional gas reserves and production in the Sichuan Basin.Due to complex hydrocarbon accumulation conditions,great burial depth and complicate gas-water relation,however,this type of gas reservoirs faces huge challenges to realize efficient development.In this paper,the development history of deep marine carbonate gas reservoirs in the Sichuan Basin was analyzed.Then,based on such development characteristics and practices,special technologies were summarized.Finally,the research direction for the coming years was pointed out.And the following research results were obtained.First,the reserves of the deep marine carbonate gas reservoirs in the Sichuan Basin vary greatly in scales and types.The reservoirs are of poor quality and strong heterogeneity with active edge and bottom water.The raw gas generally contains acidic gas.What's more,most development wells are located in mountainous areas,and drilled formations are complicated in vertical distribution.Second,special technologies have been formed in the Sichuan Basin,including the fine description technology for strong-heterogeneity gas reservoirs in deep low-gentle structures,the optimized water control technology for the water-bearing gas reservoirs with developed small-scale fractures and vugs,drilling,completion and stimulation engineering technologies for deep complex gas wells,and the support technology for clean and safe development of sulfur-bearing gas reservoirs,so as to provide support for the efficient productivity construction and optimized development of giant marine carbonate reservoirs in the Sichuan Basin.Third,as the development of the carbonate gas reservoirs in the Sichuan Basin begins to convert into the gas reservoirs in ultra-deep complex structures,the next direction of technological research is the fine structure description and thin reservoir prediction technique,across-scale numerical simulation technique,drilling and completion and gas production engineering technique for deep marine carbonate gas reservoirs.It is concluded that these special technologies for the efficient development of deep marine carbonate gas reservoirs provides powerful support for PetroChina Southwest Company to build up giant gas fields with the reserves of tens of billions of cubic meters and realize the leaping growth of gas production.The research results can provide valuable technical reference for the development of deep marine carbonate gas reservoirs at home and abroad.
文摘The increase of atmospheric carbon dioxide and the global warming due to its greenhouse effect resulted in worldwide concerns. On the other hand, carbon dioxide might be considered as a valuable and renewable carbon source. One approach to reduce carbon dioxide emissions could be its capture and recycle via transformation into chemicals using the technologies in C1 chemistry. Despite its great interest, there are difficulties in CO2 separation on the one hand, and thermodynamic stability of carbon dioxide molecule rendering its chemical activity low on the other hand. Carbon dioxide has been already used in petrochemical industries for production of limited chemicals such as urea. The utilization of carbon dioxide does not necessarily involve development of new processes, and in certain processes such as methanol synthesis and methane steam reforming, addition of CO2 into the feed results in its utilization and increases carbon efficiency. In other cases, modifications in catalyst and/or processes, or even new catalysts and processes, are necessary. In either case, catalysis plays a crucial role in carbon dioxide conversion and effective catalysts are required for commercial realization of the related processes. Technologies for CO2 utilization are emerging after many years of research and development efforts.
基金Sponsored by National Natural Science Foundation of China (Grant No 70473020)the Science and Technology Research Project of Heilongjiang Province (Grant No GC06J404)Natural Science Foundation of Heilongjiang (Grant No G200608)80
文摘According to growth pole theory, this paper puts forward that when allocating regional science and technology (S&T) innovation resources based on S&T program, should abide the principle that important area receives priority support; Meanwhile, it designs method to ascertain district S&T advantage and S&T innovation resources utilizing efficiency as well as S&T developing speed by using component analysis and DEA method, and then constructs three-dimension selecting model,by which a positive research on Heilongjiang is made, the purpose of which is to offer scientific method support and decision-making foundation for making regional S&T program.
文摘In the modern industrial system,the metallurgical and chemical industry occupies a pivotal position,providing key basic materials for many felds.However,for a long time,the traditional metallurgical and chemical production model has overly relied on a large amount of resource input,resulting in low resource utilization in ore mining,metal smelting,and other processes,leading to significant waste of resources.At the same time,a large amount of pollutants such as exhaust gas,wastewater,and waste residue generated during the production process are discharged,causing a heavy burden on the ecological environment.Environmental problems such as acid rain,water pollution,and soil heavy metal pollution occur frequently,seriously affecting ecological balance and human health.In the context of increasingly scarce global resources and stringent environmental requirements,it is urgent to seek efficient resource utilization and clean production technologies in metallurgical and chemical processes.These technologies are not only key means to alleviate resource crises and improve environmental quality,but also the core driving force for promoting the transformation and upgrading of the metallurgical and chemical industry,achieving sustainable development,and having immeasurable significance for ensuring the long-term stable development of the industry and the virtuous cycle of the earth's ecological environment.
文摘【目的】随着塑料制品带来的污染问题日益严重,人们的环保意识逐渐增强。基于中国丰富的竹资源和竹产业优势,本研究剖析“以竹代塑”发展现状,明确竹产业链中竹资源高效培育及发展的优势与面临的挑战,旨在引导科研机构与企业聚焦关键技术攻关,加大研发投入以促进竹培育技术创新和提高竹资源利用效率及产品质量,提升竹产业整体竞争力。【方法】检索中国知网(CNKI)和Web of Science核心集(WoS)近15年(2010—2024年)与“以竹代塑”和“竹资源”相关的研究文献,应用VOSviewer对目前研发的竹种、研究热点等进行知识图谱可视化分析,同时对全国26个重点竹产区开展问卷调查和实地调研,解析竹资源高效培育利用现状及面临的挑战。【结果】近15年来,有关“以竹代塑”和“竹资源”的研究呈蓬勃发展态势,热点聚焦竹子的生物学特性、竹材的物理化学性质以及力学性质等方面。我国发展“以竹代塑”的核心优势明显,如资源禀赋突出、产业发展迅速、经济效益明显、各级政策支持等,但竹资源高效培育面临着主要瓶颈问题,如监测粗放、种质开发不足等,为此提出种质创新、低产林改造、设施升级等发展路径。【结论】未来应重点建设竹类种质资源库,定向培育高价值“代塑”竹种;着力改造低产低效竹林,因地制宜建立高标准竹林地示范区;科学规划并完善竹林基地道路、蓄水灌溉等基础设施,创新竹林优质原料供给与先进经营管理模式,为生态文明建设、社会经济发展、乡村振兴及“双碳”目标达成提供竹业支撑。
文摘Sustainable development strategy is the only choice for steel companies in China. Starting with environment protection, energy-saving and integrated resource utilization, supported by technology advancement and environmental investment, sustainable development strategy can be implemented to drive the circular economy. Thereby, the responsibility to realize the long-term harmony and synergy between society and enterprises is taken by Baosteel.
