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The Trend of U.S.-China Relations: Is a Conflict Between the United States and China Inevitable?
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作者 CAO Yujue YUAN Yutong 《International Relations and Diplomacy》 2020年第7期290-297,共8页
International relations theory can serve as a guide to understanding national behaviour,especially those that are strained by ideological misunderstandings.Realism basically believes that state behaviour reflects the ... International relations theory can serve as a guide to understanding national behaviour,especially those that are strained by ideological misunderstandings.Realism basically believes that state behaviour reflects the state’s pursuit of power.Constructivism believes that thought drives behaviour.Therefore,in order to better understand the behaviour between states,this essay suggests that constructivism and realism can interact rather than repel each other,because constructivism can play a complementary role in realism.This combination can promote behavioural understanding between countries without compromising the interests of countries,thereby reducing the possibility of conflict and war.Finally,the ups and downs of Sino-US relations reflect the participation of ideology.In other words,based on this method to analyse the current relationship between China and the United States,it can be predicted that the two countries can basically avoid the war between them. 展开更多
关键词 international relations china the united states CONFLICT
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China and the United States Are Destined to Be Partners──The Past, Present and Future of China-US Relations
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作者 Li Zhaoxing 《China Today》 2000年第1期4-7,共4页
关键词 BE US china and the united states Are Destined to Be Partners Present and Future of china-US relations The Past
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Comparison of water resources management between China and the United States 被引量:9
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作者 Chansheng He Carol P.Harden Yanxu Liu 《Geography and Sustainability》 2020年第2期98-108,共11页
As the world’s top two economies,the United States(U.S.)and China face a number of similar water resources problems.Yet,few studies have been done to systematically compare policies and approaches on water resources ... As the world’s top two economies,the United States(U.S.)and China face a number of similar water resources problems.Yet,few studies have been done to systematically compare policies and approaches on water resources management between China and the U.S.This study compares water resources policies of China and the U.S.in the areas of national authority,water supply,water quality,and ecosystem use of the water to draw lessons learned and shed light on water resources management in China,the U.S.,and the rest of the world.The lessons learned from the comparison include six aspects.1)New paradigms of people-water harmony and a water-saving society are urgently needed to address the pressing water crisis and achieve the United Nations Sustainable Development Goals(UN SDGs).2)A comprehensive,consistent,forward-looking national policy is necessary to achieve sustainable use of water resources.3)Empowerment of river basin commissions with comprehensive authority over the integrative management of air,land,water,and biological resources in the river basin could significantly enhance the benefits and effectiveness of economic development and environmental protection.4)Expansion of water exchange through market mechanisms among water users promotes efficient and beneficial water uses.5)Use of water for ecosystem services should be an integral part of water resources management.China has set up a national blueprint for achieving ecological civilization;maintaining appropriate amounts of flow in rivers and lakes for maintenance of wildlife and fisheries and ecosystems should be institutionalized as part of this national strategy as well.6)By sharing their rich experiences and lessons in water resources management,economic development,and ecological protection with other countries,China and the U.S.can help the world to achieve global human-water harmony and the UN SDGs. 展开更多
关键词 Water resources management Comparative analysis china The united states
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Comparison of RN licensure examination: China and the United States 被引量:3
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作者 Jianlin Hou Shengyu Chen +3 位作者 Sabhyta Sabharwal Victoria Fan Minghui Yan Weimin Wang 《International Journal of Nursing Sciences》 CSCD 2019年第1期111-116,共6页
Having the two largest nursing workforces across the globe,both China and the United States have implemented licensure examinations to standardize the qualifications of registered nurse.China established the National ... Having the two largest nursing workforces across the globe,both China and the United States have implemented licensure examinations to standardize the qualifications of registered nurse.China established the National Nursing Licensure Examination(NNLE)in 1995.Like the National Council Licensure Examination for Registered Nurses(NCLEX-RN)in the United States,the NNLE has become an important link in the nurse registration process and contributed a lot in quality assurance and development of nursing profession.It may be necessary for the NNLE to learn from NCLEX-RN in several aspects,including increasing the frequency of exam,providing examinees with individualized services,and continuing reforming exam content and format.By better aligning the content and format of the examination with the current nursing paradigm and clinical requirements,nurses may enter the healthcare field better prepared to care for patients.Considering the magnitude of their nursing workforce,both China and the United States have great potential to serve as a role model for other developing countries as they look towards establishing national nursing education programs.As new policies around standardized nurse education in China take form,we urge that the NNLE be included alongside curricular reforms.As these reforms are implemented,continued research will be needed to evaluate the effectiveness of curriculum and licensure exam regulations upon nurse preparedness and quality of nursing care in China. 展开更多
关键词 china EXAMINATION LICENSURE Nursing education The united states
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Depression in the context of chronic diseases in the United States and China 被引量:3
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作者 Hongjin Li Song Ge +1 位作者 Brian Greene Jacqueline Dunbar-Jacob 《International Journal of Nursing Sciences》 CSCD 2019年第1期117-122,共6页
Depression is not only a major global public health concern,but also a common comorbidity among patients who experience chronic diseases,such as cancer,stroke,heart disease,diabetes,and chronic obstructive pulmonary d... Depression is not only a major global public health concern,but also a common comorbidity among patients who experience chronic diseases,such as cancer,stroke,heart disease,diabetes,and chronic obstructive pulmonary disease.Yet the recognition and treatment varies widely around the world.This study(1)provides an integrated review of the literature on the prevalence of depression among patients with chronic diseases in China and the United States and its relationship to poorer health outcomes and(2)compares the differences in the percentages of patients receiving treatments for depression between the United States and China.Given the current situation,we recommended that primary care and specialty providers should be knowledgeable and alert regarding the signs of depression.Efforts should be directed to further implement integrated care based interventions to manage depression and improve quality of life among patients suffering chronic diseases in both China and the United States. 展开更多
关键词 Chronic disease china DEPRESSION united states
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Impacts of the COVID-19 pandemic on the dairy industry: Lessons from China and the United States and policy implications 被引量:3
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作者 Qingbin WANG LIU Chang-quan +4 位作者 ZHAO Yuan-feng Anthony KITSOS Mark CANNELLA WANG Shu-kun HAN Lei 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2020年第12期2903-2915,共13页
The purposes of this study are to assess the COVID-19 pandemic’s impacts on the dairy industries in China and the United States and to derive policy recommendations for enhancing the diary industries’resilience to p... The purposes of this study are to assess the COVID-19 pandemic’s impacts on the dairy industries in China and the United States and to derive policy recommendations for enhancing the diary industries’resilience to pandemics and other market shocks.Specifically,data from the two nations are used to analyze and compare the mechanisms through which the pandemic has affected their dairy industries and to discuss potential lessons from their experiences.The findings suggest that this pandemic has heavily affected the dairy industries in both China and the United States through similar mechanisms,such as decreased farmgate milk prices,disruption and difficulties of moving milk within the supply chains,worker shortages,increased production costs,and lack of operating capital.There were also significant differences in the affecting mechanisms between the two nations,including transportation difficulties from widespread road closures and significant reduction in holiday sales of dairy products in China,and the shutdown of many dairy processors in the United States due to the closing of schools,restaurants,and hotels.While government financial reliefs are highly needed to help many dairy farms and processors survive this pandemic in the short term,the dairy industries and governments need to work together to develop long-term strategies and policies to balance the industries’efficiency and flexibility,product specialization and diversification,supply chain integration and local food systems,and market mechanisms and policy regulations and interventions. 展开更多
关键词 impacts of the COVID-19 pandemic dairy industry china the united states
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Challenges of agriculture and food systems issues in China and the United States 被引量:2
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作者 Gregory Veeck Ann Veeck Hongyan Yu 《Geography and Sustainability》 2020年第2期109-117,共9页
China and the United States are the two most significant nations in the contemporary global food and agricultural network.In addition,they are two of the most important innovators with respect to the development of ne... China and the United States are the two most significant nations in the contemporary global food and agricultural network.In addition,they are two of the most important innovators with respect to the development of new crop varieties,agro-technologies,farm products,markets and consumer issues,such as consumer resistance to genetically modified foods,among others.In the face of an ever-complex web of interactions,technologies and products among producers and consumers in both nations,there are far more structural similarities than differences in the food and agriculture sectors of these two nations.This essay,adopting some of the themes of the Sino-American Symposium on Future Issues Affecting Quality of Life,presents a limited but representative comparative assessment of three of the most important shared challenges impacting the agricultural sectors of China and the United States for the period from 2000 to the present including 1)environmental challenges related to agricultural water supply,2)declines in farm labor and rural population,and 3)growing food-related concerns and challenges.For both nations,excessive and unsustainable groundwater consumption has lowered water tables and limited crop production.Rural populations and farm workforces in both nations are also declining,leading to labor challenges in both nations.Finally,concerns regarding food safety are also very similar with major challenges to the farm sector associated with consumer resistance to genetically modified food crops and sanitation issues linked to lengthening supply chains.All of these issues threaten the development of sustainable agricultural production systems. 展开更多
关键词 AGRICULTURE Food safety china united states Sino-US comparative study
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A Comparison of Shale Gas Fracturing Based on Deep and Shallow Shale Reservoirs in the United States and China 被引量:2
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作者 Qixing Zhang Bing Hou +2 位作者 Huiwen Pang Shan Liu Yue Zeng 《Computer Modeling in Engineering & Sciences》 SCIE EI 2022年第12期471-507,共37页
China began to build its national shale gas demonstration area in 2012.The central exploration,drilling,and development technologies for medium and shallow marine shale reservoirs with less than 3,500m of buried depth... China began to build its national shale gas demonstration area in 2012.The central exploration,drilling,and development technologies for medium and shallow marine shale reservoirs with less than 3,500m of buried depth in Changning-Weiyuan,Zhaotong,and other regions had matured.In this study,we macroscopically investigated the development history of shale gas in the United States and China and compared the physical and mechanical conditions of deep and shallow reservoirs.The comparative results revealed that themain reasons for the order-ofmagnitude difference between China’s annual shale gas output and the United States could be attributed to three aspects:reservoir buried depth,reservoir physical and mechanical properties,and engineering technology level.The current engineering technology level of China could not meet the requirements of increasing production and reducing costs for deep shale gas reservoirs;they had reached the beneficial threshold development stage and lacked the capacity for large-scale commercial production.We identified several physical and mechanical reasons for this threshold development stage.Deep shale reservoirs were affected by the bedding fracture,low brittleness index,low clay mineral content,and significant areal differences,as well as by the transformation from elasticity to plasticity,difficulty in sanding,and high mechanical and strength parameters.Simultaneously,they were accompanied by six high values of formation temperature,horizontal principal stress difference,pore pressure,fracture pressure,extension pressure,and closure pressure.The key to deep shale gas horizontal well fracturing was to improve the complexity of the hydraulic fracture network,formadequate proppant support of fracture surface,and increase the practical stimulated reservoir volume(SRV),which accompanied visual hydraulic discrete network monitoring.On this basis,we proposed several ideas to improve China’s deep shale gas development involving advanced technology systems,developing tools,and supporting technologies in shale gas exploration and development in the United States.These ideas primarily involved stimulation technologies,such as vertically integrated dessert identification and optimization,horizontal well multistage/multicluster fracturing,staged tools development for horizontal wells,fractures network morphology monitoring by microseismic and distributed optical fiber,shale hydration expansion,soak well,and fracturing fluid flow back.China initially developed the critical technology of horizontal well large-scale and high-strength volume fracturing with a core of“staged fracturing with dense cutting+shorter cluster spacing+fracture reorientation by pitching+forced-sand addition+increasing diameter perforating+proppant combination by high strength and small particle size particles”.We concluded that China should continue to conduct critical research on theories and technical methods of horizontal well fracturing,suitable for domestic deep and ultra-deep marine and marine-continental sedimentary shale,to support and promote the efficient development of shale gas in China in the future.It is essential to balance the relationship between the overall utilization degree of the gas reservoir and associated economic benefits and to localize some essential tools and supporting technologies.These findings can contribute to the flourishing developments of China’s deep shale gas. 展开更多
关键词 Deep and shallow shale in the united states and china physical and mechanical properties multistage/multicluster fractures network monitoring soak well and flow back
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Comparative Analysis of Higher Education Between China and the United States 被引量:1
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作者 Yu Lianshun 《大学英语教学与研究》 2011年第6期12-16,共5页
It is well-known that the United States,a highly developed country whether in high-tech.or higher education,is in a leading position in the world.Based on the comparison and analysis of higher education between China ... It is well-known that the United States,a highly developed country whether in high-tech.or higher education,is in a leading position in the world.Based on the comparison and analysis of higher education between China and the U.S.,this article highly affirms the advantages of American higher education,offers an objective comment on China's higher education reform in recent years,and earnestly indicates that China's higher education needs to be improved in order to facilitate greater development. 展开更多
关键词 大学英语 英语教学 教学方法 阅读教学
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The journey,gain,and thought from engaging in the research of Chinese herbal medicines in China,Japan,and United States
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作者 刘延泽 《宝鸡文理学院学报(自然科学版)》 CAS 2011年第4期2-4,共3页
<正>Since early 80s of last century,Chinese herbal medicines focused on the isolation and structural identification of active/chemical compounds have being investigated,started the journey from Henan College of ... <正>Since early 80s of last century,Chinese herbal medicines focused on the isolation and structural identification of active/chemical compounds have being investigated,started the journey from Henan College of Traditional Chinese Medicine.After one year(1985~1986) advanced study in Prof.Jingxi Xie's laboratory in the 展开更多
关键词 Chinese herbal medicines china JAPAN united states
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Do people really support conservation?Evidence from China and the United States
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作者 Mengqiao Wang 《Chinese Journal of Population,Resources and Environment》 2022年第1期12-18,共7页
Survey studies have consistently shown strong public support for biodiversity conservation,even though conservation regulations often face strong local resistance when they are implemented.This seemingly contradictory... Survey studies have consistently shown strong public support for biodiversity conservation,even though conservation regulations often face strong local resistance when they are implemented.This seemingly contradictory phenomenon is due to the fact that previous polls have sought opinion only in the abstract,yet many conservation measures are implemented at the expense of local economic development,and policymakers often face a‘Conservation-Development Tradeoff’-a policy dilemma that remains understudied by social scientists.To fill this gap,this study conducts one of the first comparative surveys on public support for biodiversity conservation in China and the United States.I measure public support for conservation using two separate question versions online.The‘regular version’asks directly about individual support for biodiversity conservation,and the“tradeoff version”asks the same question but in the context of the policy tradeoff.The results show that both American and Chinese citizens are highly supportive of conservation in the abstract.But after they learn about the tradeoff effect,the aggregate support falls sharply,and the Chinese citizens show significantly less support compared to their American counterparts.The survey findings expanded on existing academic research on public attitudes toward conservation policies and can encourage future conservation policymakers to understand the significance of the tradeoff issue,as conventional wisdom may have overestimated public support for biodiversity conservation.Moreover,as China has become a crucial player in global conservation governance,understanding the Chinese public sentiment on the real-world policy dilemma can have important implications for conservation policymaking in the world. 展开更多
关键词 china Conservation-Development Tradeoff Public Attitudes Survey Study united states
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A Comparative Study for the Development of Coal-to-Liquids Industries in China, South Africa and United States
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作者 Yiming Li Changqing Li 《Green and Sustainable Chemistry》 2019年第3期85-93,共9页
Many energy consuming countries have carried out research, development, demonstration, planning and deployment of coal-to-liquids (CTL) because of its ability to replace oil imports by converting coal resources into f... Many energy consuming countries have carried out research, development, demonstration, planning and deployment of coal-to-liquids (CTL) because of its ability to replace oil imports by converting coal resources into fuel. Among them, China and South Africa successfully had their CTL technology industrialized, while the United States did not. To understand the differences in the industrial development level, a comparative study is necessary. This paper compares the history, driver and policy of CTL industry in China, South Africa and United States, collates and discloses numbers of industry details for the first time. We figure out that the motivation, top level planning and policy consistency are the key indicators of the difference on the industrial development level. Among them, the key to the success of CTL industrialization in China and South Africa is the government’s strong and stable determination to improve energy security, which provides a stable top-level planning and robust policy support. The failure of CTL in United States is caused by the shift of policy attention after its energy security situation improved. 展开更多
关键词 Coal-to-Liquids Comparative Study china united states SOUTH AFRICA
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Research on the Europe and the United States Musical Compose Mode Development and the Influences on Computer Music in China
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作者 Sui Wu 《International Journal of Technology Management》 2016年第2期58-60,共3页
In this paper, we conduct research on the Europe and the United States musical composes mode development and the influences on computer music in China. All referrals audio music system and software audio sound is prov... In this paper, we conduct research on the Europe and the United States musical composes mode development and the influences on computer music in China. All referrals audio music system and software audio sound is provided by the electronic sound, because of the different on the basis of the electronic storage manufacturing waveform sampling, the tone can be roughly divided into the orchestra instrument timbre, national band instrument timbre, the analog electronic band instrument timbre, tone and electronic composite timbres, these timbre features fully embodies the characteristics of electronic music tone splendor. Our research integrates the Europe and the United States musical composes mode to revise the traditional computer music pattern that is innovative. 展开更多
关键词 Computer Music Europe and the united states Compose Mode china Influence
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Overseas Interests Maintenance Mechanism and Its Enlightenment to China--To the System as the Research Object of the United States
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作者 QIAO Xiaoming 《International Journal of Technology Management》 2015年第10期36-38,共3页
By American post-war gradually build up national security strategy, which is based on law and mechanism, a foreign diverse practices, with international mechanism as the platform, with military force as the backing, s... By American post-war gradually build up national security strategy, which is based on law and mechanism, a foreign diverse practices, with international mechanism as the platform, with military force as the backing, supplemented by non-governmental forces overseas interests maintenance mechanism, the strategy and policy support, the guarantee of the military and security for the development of overseas interests to provide comprehensive protection. For our country, the United States to maintain the interests of the overseas which has important reference significance to the practice and experience, China should build overseas interests maintenance strategic framework, perfect the relevant legal system and government agencies, to enhance the use of international mechanism, reform and construction, strengthen the delivery and use of military force overseas, pay attention to the cultivation of non-governmental forces and support, to strengthen the construction of national image. 展开更多
关键词 china Overseas interests safeguard mechanism the united states
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A Study of Chinese Students in the United States and Its Implication for English Teaching in China
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作者 Yanhong Huang 《Sino-US English Teaching》 2005年第2期40-46,共7页
Language acquisition is a system with four components: language development, academic development, cognitive development and sociocultural development. Based on this theory, Chinese students in the United States are ... Language acquisition is a system with four components: language development, academic development, cognitive development and sociocultural development. Based on this theory, Chinese students in the United States are studied from three perspectives: linguistically, culturally, and social psychologically. It indicated that, to help Chinese students develop their English performance and cultural appreciation in this diverse world, the profession of English teaching in China should cover a variety of domains, including linguistic, cultural and psychological input. Both American and Chinese education can benefit from this special group of Chinese students if they can be better understood, and used as a bridge between China and U. S. cultural and academic exchange. In the meantime, the mirror held up to the Chinese students in these perspectives reflects not only who they are but also who they can become. 展开更多
关键词 Chinese students in the united states English teaching in china linguistic development academic development cultural and psychological development
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The Analysis of NGOs' Organizational Ecosystem in Participating in Climate Change Issues in the United States
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作者 Yang Li Lan Yuxin +1 位作者 Zeng Shaojun Yu Huijin 《Meteorological and Environmental Research》 CAS 2014年第9期60-63,共4页
How many NGOs were there in the climate change field in the United States? Who were they? And what was the relationship between them? In the United States,climate change was only a branch of environmental issues at... How many NGOs were there in the climate change field in the United States? Who were they? And what was the relationship between them? In the United States,climate change was only a branch of environmental issues at the beginning; therefore there were no specific quantitative statistics and network analysis of NGOs in climate change. Diversity was an important feature of NGOs in American climate change fields,and it showed a complex organizational ecology through varieties of networks and interaction among organizations. In order to make a difference in climate field,Chinese NGOs firstly needed to improve and enhance their own abilities. 展开更多
关键词 Climate change the united states NGO participation Organizational ecology china
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Comparative analysis of CO_(2)emissions and economic performance in the United States and China:Navigating sustainable development in the climate change era
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作者 Khalid Mehmood Syed Tauseef Hassan +1 位作者 Xuchun Qiu Shahid Ali 《Geoscience Frontiers》 SCIE CAS CSCD 2024年第5期239-255,共17页
Economic growth has brought a global climate change into the spotlight,and CO_(2)emissions demonstrate significant challenges in reducing environmental shifts worldwide.Globally,the United States and China contribute ... Economic growth has brought a global climate change into the spotlight,and CO_(2)emissions demonstrate significant challenges in reducing environmental shifts worldwide.Globally,the United States and China contribute the largest amount of CO_(2)emissions.The purpose of this study is to examine the relationship between different types of CO_(2)emissions and economic growth by using a modeling approach.We analyze total CO_(2)emissions,coal CO_(2)emissions,oil CO_(2)emissions,the global share of coal CO_(2)emissions,the global share of oil CO_(2)emissions,and economic growth.This study provides unique insights into how to simultaneously reduce CO_(2)emissions and sustain economic growth.A bootstrap autoregressive distributed lag(BARDL)simulation method is utilized to examine the long-and short-run effects of predictors on CO_(2)emissions.Coal CO_(2)emissions are found to have a significant positive effect on economic growth in the short run but a negative impact on economic growth over the long run in the United States.The United States needs to implement stronger measures to balance coal CO_(2)emissions with economic growth for sustainable development.In contrast,oil CO_(2)emissions have positive effect for China in both the long run and short run.Thus,China can continue to reduce CO_(2)emissions from oil while maintaining positive economic growth.The China’s policies promoting cleaner energy alternatives can be adapted and implemented to maintain a balance between economic growth and carbon reduction.The study has valuable insights for policymakers seeking to balance economic growth with carbon reduction strategies.It emphasizes the need to better understand the complex relationship between CO_(2)emissions and economic growth. 展开更多
关键词 CO_(2)emission Sustainable development Climate change united states china BARDL
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Secular trends of asthma mortality in China and the United States from 1990 to 2019
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作者 Xiaochen Li Mingzhou Guo +2 位作者 Yang Niu Min Xie Xiansheng Liu 《Chinese Medical Journal》 SCIE CAS CSCD 2024年第3期273-282,共10页
Background:Asthma imposes a large healthcare burden in China and the United States(US).However,the trends of asthma mortality and the relative risk factors have not been comparatively analyzed between the countries.Th... Background:Asthma imposes a large healthcare burden in China and the United States(US).However,the trends of asthma mortality and the relative risk factors have not been comparatively analyzed between the countries.The aim of this study was to compare the mortality and risk factors between China and the US.Methods:The deaths,and mortality rates of asthma in China and the US during 1990–2019 were obtained from the Global Burden of Disease Study 2019.The age–period–cohort model was used to estimate these mortality rates based on a log-linear scale with additive age,period,and cohort effects.The population attributable fractions of risk factors for asthma were estimated.Results:In 1990–2019,the asthma mortality rate was higher in China than in the US.The crude and age-standardized asthma mortality rates trended downward in both China and the US from 1990 to 2019.The decline in mortality was more obvious in China.Mortality gap between the two countries was narrowing.A sex difference in asthma mortality was observed with higher mortality in males in China and females in the US.The age effects showed that mortality increased with age in adults older than 20 years,particularly in the elderly.Downward trends were generally observed in the period and cohort rate ratios in both countries,with China experiencing a more obvious decrease.Smoking and high body mass index(BMI)were the leading risk factors for asthma mortality in China and the US,respectively.Mortality attributable to occupational asthmagens and smoking decreased the most in China and the US,respectively.Conclusions:In 1990–2019,the asthma mortality rate was higher in China than in the US;however,the mortality gap has narrowed.Mortality increased with age in adults.The improvements in asthma death risk with period and birth cohort were more obvious in China than in the US.Smoking,high BMI,and aging are major health problems associated with asthma control.The role of occupational asthmagens in asthma mortality underscores the importance of management and prevention of occupational asthma. 展开更多
关键词 ASTHMA MORTALITY Global disease burden china the united states Age–period–cohort model
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The Rising,Recession and Revitalization of the Traditional Industrial Base in the Northeastern United States 被引量:1
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作者 姚丽丽 《海外英语》 2012年第23期211-214,共4页
The distribution of American industries has been unbalanced and most of the early industrial regions were centered in northeastern America.The northeastern traditional industrial base once was called"manufacturin... The distribution of American industries has been unbalanced and most of the early industrial regions were centered in northeastern America.The northeastern traditional industrial base once was called"manufacturing belt".Since the 1950s,old industrial bases in the United States have been under recession.The northeastern region was then even called"rust belt".Some issues and measures of policy were set up by the government to adjust and restructure the old industrial bases,and some are useful experience and inspirations for our country,such as setting up special branches and organizations,establishing and implementing strategic planning for the adjustment and restructure of old industrial bases,adjusting the industrial branch and system,emphasizing on environment control and preservation and so on was achieved.Learning the successful experience from America,effective countermeasures and steps must be taken to accelerate the revival of the old industrial base in Northeastern China. 展开更多
关键词 NORTHEASTERN united states traditional industrial
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Temporal Variability of Tropospheric NO_(2)over Cities in the United States,Western Europe and China from 2005 to 2022
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作者 ZHANG Qianqian 《Chinese Geographical Science》 SCIE 2024年第6期983-992,共10页
Anthropogenic Nitrogen oxides(NO_(x)=NO_(2)+NO)emissions are highly concentrated in urban area,and the weekly cycles,seasonal patterns and long-term trends of tropospheric NO_(2)columns over cities differ from region ... Anthropogenic Nitrogen oxides(NO_(x)=NO_(2)+NO)emissions are highly concentrated in urban area,and the weekly cycles,seasonal patterns and long-term trends of tropospheric NO_(2)columns over cities differ from region to region due to different emission sectoral compositions and human activities.In this study,we used satellite observed tropospheric NO_(2)column data to compare the longand short-term NO_(2)column density time series over cities in the United Sates(the U.S.),western Europe and China.The results showed that in all the targeted cities,the outbreak of the Corona Virus Disease in 2019(COVID-19)moved the December peak of the city-level NO_(2)columns forward to November and October or even earlier in 2020 and 2021.On weekly level,cities in the U.S.show the lowest NO_(2)columns ratio on weekend/work day,then come the western European cities,and a weak weekly pattern is seen in Chinese cities.For all the cites,we find a higher weekend/work day NO_(2)ratio in cold seasons than in warm seasons,indicating a higher contribution from NOx emission sectors of residential,industry and power plants in the warm seasons.In the long-term,NO_(2)columns over the U.S.and western European cities declined by a fraction twice that of the regional mean level from 2004 to 2021.In China,NO_(2)columns started to decrease since 2012,at a similar rate between the city and regional level.This work confirms the importance to quantify and control NOx emissions from cities. 展开更多
关键词 NO_(2)columns urban region weekly cycle seasonal pattern long-term trend united states western Europe china
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