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
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
【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
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.
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.
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。
