期刊文献+
共找到23篇文章
< 1 2 >
每页显示 20 50 100
“寸白”——“主东”时空与营造“技礼” 被引量:4
1
作者 孙博文 《建筑学报》 北大核心 2016年第9期26-31,共6页
结合工匠田野调查与民间手抄本文献记载,对南方民间建筑营造尺法进行梳理,试图厘清建筑尺寸"压白"这一复杂现象,对尺法问题与民间信仰、匠人巫术与社会机制之间的关系进行辨析;同时对传统建筑的身体性、时空观念、主东话语表... 结合工匠田野调查与民间手抄本文献记载,对南方民间建筑营造尺法进行梳理,试图厘清建筑尺寸"压白"这一复杂现象,对尺法问题与民间信仰、匠人巫术与社会机制之间的关系进行辨析;同时对传统建筑的身体性、时空观念、主东话语表达与营造技术的社会礼仪性本源问题提出了笔者的观点。 展开更多
关键词 营造尺法 乡土工匠 鲁般营造正式 技礼 主东
原文传递
The West and the Middle East: Liberal Nationalism, Instrumental Nationalism
2
作者 Gadi Hitman 《Cultural and Religious Studies》 2016年第3期161-174,共14页
This paper argues that there is no real nationalism in the Middle East and if is, then it is an instrumental. The historical process of the region which relates to nationalism has had three stages: (1) the European... This paper argues that there is no real nationalism in the Middle East and if is, then it is an instrumental. The historical process of the region which relates to nationalism has had three stages: (1) the European conquest that forced the indigenous people to battle both for freedom and confront a secular idea such as nationalism; (2) arbitrarily marked borders by the West disregarding ethnic religious and tribal lines and affinity; (3) the creation of Arab nation states with no solid infrastructure of shared national values. This perspective can help understand current political developments in light of the Arab spring upheavals, in Iraq, Syria and Libya. 展开更多
关键词 Arab spring LIBERALISM NATIONALISM instrumental-ism tribalism
下载PDF
Application of Principal Component Analysis with SPSS in Water Quality Assessment of Shenzhen Eastern Beach 被引量:1
3
作者 彭泰 周连宁 刘念 《Agricultural Science & Technology》 CAS 2014年第4期688-691,共4页
Survey and analysis were conducted on water quality of offshore seas in eastern region of Shenzhen by principal component analysis with SPSS. Then, 8 pollutants indices were then reduced to 5. Based on weighted analys... Survey and analysis were conducted on water quality of offshore seas in eastern region of Shenzhen by principal component analysis with SPSS. Then, 8 pollutants indices were then reduced to 5. Based on weighted analysis of principal component weights, comprehensive scores of different monitored stations were com- puted and sequenced in order to make evaluation on sea quality of eastern region of Shenzhen. 展开更多
关键词 Principal components analysis with SPSS Water quality evaluation Eastern region in Shenzhen
下载PDF
Dionysos and Apollo: Remediating Said's Orientalism with Metacritical Perspective
4
《Journal of Philosophy Study》 2017年第7期356-359,共4页
Geography is a kind of differential calculus in the sense that the three-dimensional, that is, the act of tangentially accessing things, is mapped on to the two-dimensional or the concrete. It is why we can say that t... Geography is a kind of differential calculus in the sense that the three-dimensional, that is, the act of tangentially accessing things, is mapped on to the two-dimensional or the concrete. It is why we can say that the East-West or Occidental versus Oriental dichotomy is so limited in its binary dualism. We could easily criticize not only Said's Orientalism, but also in turn, a critical self-defense by turning itself upon its own head. It can indeed be said that the cross or cardinal directions run four different ways and not two. "The East" is not just Far Eastern, that is, the so-called "Asian," but extends to the Far West or to California. Parts of Europe and the Dionysian are not simply limited to Central Europe and Southeastern Asia. We can see in Asia, that is, Eurasia and in North Africa, that 1-2% of non-Sub-saharan human DNA is genotypically Neanderthal in addition to being Homo Sapiens in DNA. 1 The task, it might be said, is to continually remediate binary directions and to reweave Apollo and Dionysos in Friedrich Nietzsche. We can see the limitations of Continentalism in categorizing the human. 展开更多
关键词 philosophical anthropology political geography Friedrich Nietzsche ORIENTALISM Edward Said metaphysical cartography
下载PDF
探讨血清中α_l-微球蛋白、同型半胱氨酸和胱抑素C在2型糖尿病肾病患者检测中的意义 被引量:3
5
作者 王海静 《中外医疗》 2017年第13期1-3,共3页
目的探讨对2型糖尿病肾病患者实施相关临床指标进行检测的效果与临床意义。方法方便收集50例2型糖尿病肾病患者的临床资料予以回顾性分析研究,资料收集时间为2015年1月—2016年12月。将这50例患者设为实验组,另从同期在该院接受体检的... 目的探讨对2型糖尿病肾病患者实施相关临床指标进行检测的效果与临床意义。方法方便收集50例2型糖尿病肾病患者的临床资料予以回顾性分析研究,资料收集时间为2015年1月—2016年12月。将这50例患者设为实验组,另从同期在该院接受体检的人群中随机选择50名设为健康对照组。于清晨空腹状态下采集两组研究对象的静脉血,检测同型半胱氨酸以及胱抑素C水平。另收集两组的中段晨尿送检,采用免疫散射比浊法检测α_1-微球蛋白水平。结果两组研究对象在平均年龄以及平均体质量等方面情况基本相同,各项临床指标经比较差异无统计学意义(P>0.05)。对两组研究对象的α_1-微球蛋白、同型半胱氨酸和胱抑素C水平进行检测,记录检测结果并进行组间统计学比较可得,实验组检测水平分别为(19.85±5.02)mg/L、(15.78±3.12)μmol/L、(1.51±0.45)mg/L,均显著高于对照组的(3.75±1.27)mg/L、(9.12±2.35)μmol/L、(0.62±0.21)mg/L(P<0.05)。结论对2型糖尿病肾病患者的血清中α_1-微球蛋白、同型半胱氨酸和胱抑素C指标进行检测可较为直观的了解到患者的肾脏功能损伤情况,为临床诊治提供一定的参考依据。 展开更多
关键词 2型糖尿病 并发症 糖尿病肾病 αl-微球蛋白 同型半胱氨酸 胱抑素C
下载PDF
Extremist Politics as an Instrument of Ethnic Assertions among the Bodos of Northeast India
6
作者 Susmita Sen Gupta 《Journalism and Mass Communication》 2014年第8期527-534,共8页
Ethnic assertions worldwide have assumed different forms ranging from moderate methods of articulation of autonomy to extremist means of violent struggle. Resort to extremism by some sections of an ethnic group usuall... Ethnic assertions worldwide have assumed different forms ranging from moderate methods of articulation of autonomy to extremist means of violent struggle. Resort to extremism by some sections of an ethnic group usually triggers inter-ethnic conflicts with other groups on the one hand and leads to confrontation with the state on the other. This paper seeks to examine the dynamics of this phenomenon in the context of Bodos, the largest plains tribe of Assam, a State of Northeast India. The paper enquires as to whether extremist politics has met the Bodo aspirations for self-determination or has intensified the conflicts and contradictions within the Bodo society with ramifications for other ethnic groups inhabiting the Bodo-dominated areas. It is also necessary to explore the responses of the Union and State governments to Bodo extremist politics for an understanding of the conflict management process. 展开更多
关键词 EXTREMISM extremist politics ethnic assertions conflict management
下载PDF
Historical Education Research of Mao Zedong's Ideological and Political Work
7
作者 Yumei Sun 《International Journal of Technology Management》 2014年第4期128-130,共3页
Political work is the lifeblood of all economic work, is the core content of universal significance of Mao's Economic thought. If, applied broadly, that regarding ideological and political work as the lifeblood of th... Political work is the lifeblood of all economic work, is the core content of universal significance of Mao's Economic thought. If, applied broadly, that regarding ideological and political work as the lifeblood of the economy and of all other work, it is an important principle of our Party Marxist revolutionary struggle in the long-term practice of forming a "lifeline " was a metaphor, it fully emphasized and affirmed the status and role of ideological and political work, it's the concrete application of our party in the dialectical unity of in dialectical material and spiritual, economic and political principles in dialectical naaterialism and historical materialism,it is collective wisdom. 展开更多
关键词 PUBLISHER DESIGNING Lowercase letters.
下载PDF
A review of Epipenaeon ingens Nobili, 1906 (Isopoda: Bopyridae) host species and documentation of a new host, Metapenaeopsis stridulans (Alcock, 1905) (Decapoda: Penaeidae)
8
作者 M.RAJKUMAR S.MANOKARAN +1 位作者 孙军 J.P.TRILLES 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2011年第1期136-140,共5页
We collected 3 596 Metapenaeopsis stridulans (Decapoda: Penaeidae) from the southeast coast of India between January and December 2007. Sixty three specimens (43 females and 18 males) were parasitized by the bopyrid i... We collected 3 596 Metapenaeopsis stridulans (Decapoda: Penaeidae) from the southeast coast of India between January and December 2007. Sixty three specimens (43 females and 18 males) were parasitized by the bopyrid isopod Epipenaeon ingens (Isopoda: Bopyridae). This is the first report of the occurrence of E. ingens in this host; therefore, it was considered as a new host record. The highest level of infestation (3.2%) occurred in October 2007, coincident with observations of gravid females (9). The total prevalence and presence of gravid females were 17.46% and 28%, respectively. Infestation caused a characteristic bulge of the branchial chamber, growth retardation, and degeneration of the sex organs, but had no effect on the host weight. 展开更多
关键词 Bopyridae PENAEIDAE PARASITISM SHRIMP India
下载PDF
VERTICAL PROFILES OF CHL-A AND PRIMARY PRODUCTIVITY IN THE MIDDLE CONTINENTAL SHELF AREA AND EDDY AREA OF THE EAST CHINA SEA
9
作者 吴玉霖 周成旭 张永山 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2002年第1期74-80,共7页
Vertical profiles of chl-a and primary productivity in the middle continental shelf area and eddy area of the East China Sea were studied using data from a cruise in the East China Sea in February to March, 1997 and a... Vertical profiles of chl-a and primary productivity in the middle continental shelf area and eddy area of the East China Sea were studied using data from a cruise in the East China Sea in February to March, 1997 and a cruise in July, 1998. The results showed that chl-a vertical distribution closely related to in situ hydrological and nutrient conditions. Chla-a concentration ranged from 0.22 to 0.35 mg/m 3 and 0.93-1.09 mg/m 3 in the eddy area and in the middle continental shelf area, respectively. In both areas, chl-a concentrations in deep layers were slightly higher than those in shallow layers, but was of the same order of magnitude. In summer, when a thermocline existed in the water column, highest chl-a concentrations appeared at the base of the thermocline layers in both areas. In the eddy area, chl-a concentration maximized at 3l.743 mg/m 3, and averaged l.143 mg/m 3 below 30 m depth. In the middle continental shelf area, the highest chl-a concentration was 2.120 mg/m 3, the average was 1.168 mg/m 3. The primary productivity reached 1418.76 mgC/(m 2·d) in summer and 1360.69 mgC/(m 2·d) in winter. In the eddy area, the primary productivity was 787.50 mgC/(m 2·d) in summer and 159.04 mgC/(m 2·d) in winter. Vertical carbon sinking rate from the deep layer to the bottom in both areas is also discussed in this paper. 展开更多
关键词 CHL-A primary productivity vertical profile ECS
下载PDF
Comprehensive Appraisal of Provincial Low Carbon Development:A Case Study of China
10
作者 Liu Yong 《Chinese Journal of Population,Resources and Environment》 2012年第1期27-31,共5页
In this research,the Factor Analysis model of measuring provincial low carbon development in China has been constructed.Based on data from 30 provinces,an empirical study was developed to measure comprehensive low car... In this research,the Factor Analysis model of measuring provincial low carbon development in China has been constructed.Based on data from 30 provinces,an empirical study was developed to measure comprehensive low carbon development using the Factor Analysis model(Principal Components method and Normalized Varimax Rotation).The results reveal that the provincial marks of low carbon development are generally low and only nine provinces have high marks(more than 0.80).The results also show significant regional disparity.The provincial marks of the eastern region are higher than both the middle and western provinces of China's Mainland.All of the provinces with high marks(more than 0.90) are located in the eastern region,and those with the lowest marks(0.60) are located in the middle region.Furthermore,regional disparity in low carbon development follows the same pattern as economic development in China.Finally,some suggestions for decision-makers are presented. 展开更多
关键词 low carbon development INDICATORS Factor Analysismodel China
下载PDF
Comprehensive Evaluation on Urban Sustainable Development of Harbin City in Northeast China 被引量:4
11
作者 CAI Chunmiao SHANG Jincheng 《Chinese Geographical Science》 SCIE CSCD 2009年第2期144-150,共7页
It is an effective way in realizing urban coordinated and sustainable development to establish a series of in- dicators and to evaluate urban environmental and socioeconomic development. According to the characteristi... It is an effective way in realizing urban coordinated and sustainable development to establish a series of in- dicators and to evaluate urban environmental and socioeconomic development. According to the characteristics of Harbin City in Northeast China, an indicator system including five subsystems and 37 indicators was established for comprehensive evaluation on urban sustainable development. The development indexes of all urban subsystems and complex system were calculated quantitatively using the comprehensively integrated methods composed of Principle Component Analysis, Analytic Hierarchy Process and weighed index method, and then the comprehensive level of ur- ban sustainable development and the degree of urban interior coordination were analyzed. The results indicated that 1) the overall urban development presented an uptrend, however, the interior development was not well balanced from 1996 to 2006; 2) the development in each subsystem presented a strong fluctuation; and 3) the development in re- sources subsystem showed a downtrend. Based on those results, the suggestions of urban sustainable development were put forward at the end. 展开更多
关键词 sustainable development indicator system comprehensive evaluation Harbin City
下载PDF
Media Transition in Eastern Europe after 1989 Albania and Poland in Comparison
12
作者 Paolo Carelli 《Journalism and Mass Communication》 2014年第12期739-746,共8页
In this article the author compares the transformation of media systems of two countries belonging to the former Soviet bloc of Eastern Europe: Albania and Poland. The aim is to highlight differences that occurred in... In this article the author compares the transformation of media systems of two countries belonging to the former Soviet bloc of Eastern Europe: Albania and Poland. The aim is to highlight differences that occurred in this process, in order to show how, albeit a similar past and the belonging to the same political and economic model until 1989. The diversity of media transition explains the existence of different national ways in which post-communism developed during the last 25 years. 展开更多
关键词 post-communism media systems TRANSITION TELEVISION DEMOCRATIZATION
下载PDF
The Actualization of Post-colonialism in Movies
13
作者 ZHANG Jie 《Sino-US English Teaching》 2015年第5期397-402,共6页
The post-colonialism is a theory proposed by the eastern colonial academist Edward W. Said. With the understanding and the definition of post-colonialism, the paper is to analyze phenomena of the movie 2012 and Avatar... The post-colonialism is a theory proposed by the eastern colonial academist Edward W. Said. With the understanding and the definition of post-colonialism, the paper is to analyze phenomena of the movie 2012 and Avatar from several aspects. Firstly, the "other" is the first angle to be talked about. In the Westerners' perspective, they are the center of the world, and they dominate the world. Their rules are the accepted rules, and people of different origin or different cultures are all called "other". Secondly, it is the degeneration of eastern culture. In the complex of the degeneration of the culture, the demonization of the under-developed nations, the dominant language of English in the communication with the people around, feminization of the characters in the movies, and the updated colonialism of the colonized countries are to be mentioned. 展开更多
关键词 POST-COLONIALISM other Western world culture demonization the dominant language of English FEMINIZATION the updated colonialism
下载PDF
Recognition of two dominant modes of EASM and its thermal driving factors based on 25 monsoon indexes
14
作者 YE Mao CHEN Haishan 《Atmospheric and Oceanic Science Letters》 CSCD 2019年第4期278-285,共8页
Based on three reanalysis datasets—ERA-Interim,NCAR–NCEP and JRA-55—the classification of25 commonly used indexes of the East Asian summer monsoon(EASM)was investigated.The physical nature of two categories of mons... Based on three reanalysis datasets—ERA-Interim,NCAR–NCEP and JRA-55—the classification of25 commonly used indexes of the East Asian summer monsoon(EASM)was investigated.The physical nature of two categories of monsoon index,together with their circulation pattern,climate anomalies,and driving factors,were investigated.Results suggest that the selected 25 monsoon indexes can be classified into two typical categories(CategoryⅠandⅡ),which are dominated by interannual and decadal variabilities of the EASM,respectively.The anomalous circulation patterns and summer rainfall patterns related to the two categories of index also exhibit evident differences.CategoryⅠis closely linked to the low-latitude circulation system and the anomalous circulation pattern is a typical East Asia–Pacific teleconnection pattern.The summer rainfall anomaly exhibits a typical tripole pattern.However,CategoryⅡmainly reflects the impacts of the middle–high latitude circulation system on the summer monsoon and is closely linked to a typical Eurasian teleconnection pattern,which corresponds to a dipole of summer rainfall anomalies.Further analysis suggests that the underlying thermal driving factors of the two categories of monsoon are distinct.The main driving factors of CategoryⅠare the tropical sea surface temperature anomalies(SSTAs),especially ENSO-related SSTAs in the preceding winter and summer SSTAs in the tropical Indian Ocean.The winter signal of Category II summer monsoon anomalous activity mainly originates from the polar region and the middle and high latitudes of the Eurasian continent.CategoryⅡmonsoon activity is also associated with summer SSTAs in the equatorial central Pacific. 展开更多
关键词 East Asian summer monsoon dominant modes summer rainfall anomaly anomalous atmospheric general circulation pattern thermal driving factors
下载PDF
The Role of Integrated English Language Skills and Critical Thinking in the Development of Global Awareness
15
作者 Laurence MacDonald Izumi Kanzaka Richmond Stroupe 《Sociology Study》 2014年第4期316-322,共7页
The ability to communicate effectively in English is increasingly being viewed as an expectation of individuals who wish to engage with the global community. Mindful of these needs, the goals of the Global Citizenship... The ability to communicate effectively in English is increasingly being viewed as an expectation of individuals who wish to engage with the global community. Mindful of these needs, the goals of the Global Citizenship Program (GCP) at Soka University, Tokyo, Japan, focus not only on increasing English proficiency, but also on developing independent study skills, raising awareness of global issues, and enhancing the abilities of students to integrate information from multiple sources in meaningful ways. In the GCP, students enroll in English for Academic Purposes (EAP) courses which focus on developing critical thinking and research skills as well as English fluency. Through activities that require students to critically evaluate and synthesize information, opportunities are provided to engage in independent research focusing on the development process and global initiatives. This paper describes how the GCP curriculum develops academic skills and English proficiency, incorporates critical thinking activities, emphasizes global awareness, and integrates content-knowledge in order to equip students with the skills and knowledge necessary to interact successfully in the global community. 展开更多
关键词 Global citizenship English education critical thinking
下载PDF
The Rise and Impact of Financial Capitalism:A Sociological Analysis of New Forms of Capitalism
16
作者 Yang Dian Ouyang Xuanyu Kang Xiaoni 《Social Sciences in China》 2020年第4期24-43,共20页
Compared with Karl Polanyi’s first Great Transformation,the emergence of the even more influential financial capitalism can be called the second Great Transformation.The global expansion of financial capitalism has e... Compared with Karl Polanyi’s first Great Transformation,the emergence of the even more influential financial capitalism can be called the second Great Transformation.The global expansion of financial capitalism has extended its power beyond the remit of nation-states as governments,firms,families and individuals are increasingly guided and reshaped by financial markets,producing a trend toward the financialization of social life.An important social consequence is the ever more marked separation of financial markets from society,a separation that has gradually eroded the power of the state,trade unions and civil society and aggravated the employment crises,the polarization of rich and poor and the structural inequality of developed capitalist countries.In the face of society’s erosion by financial capital,the West has taken measures of social self-protection,but these have so far had little effect.To establish a new financial and market governance structure at the global level that will effectively cope with the negative impact of financial capitalism is a long and arduous task. 展开更多
关键词 financial capitalism maximizing shareholder value the Great Transformation social self-protection movement
原文传递
Can the United States and the DPRK Achieve Normalization in the Case of Trump Phenomenon? 被引量:1
17
作者 Qin Zhu 《Fudan Journal of the Humanities and Social Sciences》 2017年第3期331-354,共24页
The relation between the United States and the Democratic People's Republic of Korea (DPRK) is of substantial strategic prominence in the security landscape of Northeast Asia. The longstanding incompatibility betwe... The relation between the United States and the Democratic People's Republic of Korea (DPRK) is of substantial strategic prominence in the security landscape of Northeast Asia. The longstanding incompatibility between the two countries can be illuminated by drawing on three factors: the conflict of interest in the DPRK-ROK unification; the strategic interests of the nuclearization and the denuclearization-normalization dilemma; the Sino-U.S. dual power structure in Northeast Asia. In addressing these issues, this paper discusses the possibility of achieving diplomatic normalization between the U.S. and DPRK by examining in a comparative framework the feasibility of existing mechanisms. The paper concludes that unconventional mechanism is required to establish the initial momentum for a necessary political breakthrough, especially in light of the Trump phenomenon. Specifically, the author proposes a stepwise model to assist the diplomatic reconciliation and to further promote the restoration of peace, security and stability in Northeast Asia. 展开更多
关键词 U.S.-DPRK relations NORMALIZATION The role of China North Korean nuclear issue The THAAD dispute Trump phenomenon
原文传递
The Great Victory of Marxism in China
18
作者 Wang Weiguang 《Social Sciences in China》 2011年第4期5-18,共14页
The birth in 1921 of the Communist Party of China (CPC) with Marxism as its guiding ideology was a major event that radically changed the historical fate of the Chinese people. In the 90 years since its founding the... The birth in 1921 of the Communist Party of China (CPC) with Marxism as its guiding ideology was a major event that radically changed the historical fate of the Chinese people. In the 90 years since its founding the CPC has always persevered in combining Marxism with Chinese realities, constantly pushed forward theoretical innovations in the process of practical innovations and led the Chinese people in winning the great victory of socialism in China. These achievements represent a victory for the Chinese people in their historical choice, a victory for the CPC and a victory for Marxism in China. History has proved that only Marxism can save China and that the Sinicization of Marxism can be achieved only through constant theoretical innovations in this regard and, in the final analysis, through the Party's upholding of the ideological line of seeking truth from facts. 展开更多
关键词 Communist Party of China (CPC) Sinicization of Marxism SOCIALISM MaoZedong Thoughts theory of socialism with Chinese characteristics seekingtruth from facts
原文传递
Orientalism, "Yellow Peril," and the "New Yellow Journalism
19
作者 Josef Gregory Mahoney 《Fudan Journal of the Humanities and Social Sciences》 2016年第1期123-146,共24页
In this essay, I take the recent publication of several texts examining the historical and contemporary phenomena of Sinophobia, Orientalism, and Sinologism as an opening for theorizing underlying and related issues i... In this essay, I take the recent publication of several texts examining the historical and contemporary phenomena of Sinophobia, Orientalism, and Sinologism as an opening for theorizing underlying and related issues including pervasive anti-China biases in Western journalism and China's position therein. In addition to illustrating how the concepts of Orientalism arise from Western historical and epistemological foundations, I theorize what I call a "new yellow journalism" that has grown in tandem with "China's rise" and the threat this indicates to many Western observers, and how this threat and others like it have been met in the age of "new imperialism." I compare this new phenomenon with its historical antecedents, "yellow journalism" and America's emergence as a imperialism power with the Spanish-American War (1898), and note several key insights offered by recent critical analyses of that period, which together suggest a confluence of different players, including policymakers, new media business models, and what I describe as a type of public "corporatism" in which citizens, particularly Americans, function effectively as shareholders in maintaining hegemonic if not imperialist power. 展开更多
关键词 China - Orientalism · Yellow peril - Yellow journalism - Sinophobia Sinologism · New imperialism · Anti-China biases
原文传递
Multi-Source Characteristics of Atmospheric Deposition in Nanjing,China,as Controlled by East Asia Monsoons and Urban Activities 被引量:4
20
作者 LI Shanquan ZHANG Ganlin +1 位作者 YANG Jinling JIA Nan 《Pedosphere》 SCIE CAS CSCD 2016年第3期374-385,共12页
Atmospheric deposition, a major pathway of metals entering into soils, plays an important role in soil environment, especially in urban regions where a large amount of pollutants are emitted into atmosphere through va... Atmospheric deposition, a major pathway of metals entering into soils, plays an important role in soil environment, especially in urban regions where a large amount of pollutants are emitted into atmosphere through various sources. In order to understand the characteristics of atmospheric deposition in urban area and its relation with natural and anthropogenic sources, a three-year study of atmospheric deposition at three typical sites, industrial zone(IN), urban residential area(RZ) and suburban forested scenic area(FA),was carried out in Nanjing, a metropolitan city in eastern China from 2005 to 2007. The bulk deposition rate and element composition of atmospheric deposition varied spatio-temporally in the urban zones of Nanjing. The concentrations of Cu, Zn, Pb and Ca in the atmospheric deposits were strongly enriched in the whole Nanjing region; however, anthropogenic pollutants in atmospheric deposits were diluted by the input of external mineral dust transported from northwestern China. Source apportionment through principal component analysis(PCA) showed that the background atmospheric deposition at the FA site was the combination of external aerosol and local emission sources. The input of long-range transported Asian dust had an important influence on the urban background deposition, especially in spring when the continental dust from the northwestern China prevailed. Marine aerosol source was observed in summer and autumn, the seasons dominated by summer monsoon in Nanjing. In contrast, the contribution of local anthropogenic emission source was constant regardless of seasons. At the RZ and IN sites, the atmospheric deposition was more significantly affected by the nearby human activities than at the FA site. In addition, different urban activities and both the winter and summer Asian monsoons had substantial impacts on the characteristics of dust deposition in urban Nanjing. 展开更多
关键词 aerosol anthropogenic pollutants Asian dust metals source apportionment urban environment
原文传递
上一页 1 2 下一页 到第
使用帮助 返回顶部