期刊文献+
共找到5,507篇文章
< 1 2 250 >
每页显示 20 50 100
The tectonic differences between the east and the west in the deep-water area of the northern South China Sea 被引量:4
1
作者 XIA Zhongyu WAN Zhifeng +3 位作者 WANG Xianqing SHI Qiuhua CAI Song XIA Bin 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2016年第1期86-95,共10页
The deep-water area of the northern South China Sea, which has active and complicated tectonics, is rich in natural gas and gas hydrate. While the tectonic characteristics is different obviously between the east and t... The deep-water area of the northern South China Sea, which has active and complicated tectonics, is rich in natural gas and gas hydrate. While the tectonic characteristics is different obviously between the east and the west because of the special tectonic position and tectonic evolution process. In terms of submarine geomorphology, the eastern shelf-slope structure in Pearl River Mouth Basin is characterized by having wide sub-basins and narrow intervening highs, whereas the western (Qiongdongnan Basin) structure is characterized by narrow sub- basins and wide uplift. As to the structural features, the deep-water sags in the east are all structurally half- grabens, controlled by a series of south-dipping normal faults. While the west sags are mainly characterised by graben structures with faulting in both the south and north. With regards to the tectonic evolution, the east began neotectonic activity when the post-rifting stage had completed at the end of the Middle Miocene. In the Baiyun Sag, tectonic activity became strong and was characterised by rapid subsidence and obvious faulting. Whereas in the west, neotectonic activity began at the end of the Late Miocene with rapid deposition and weak fault activity. 展开更多
关键词 structural feature tectonic evolution tectonic difference deep-water basins northern South china Sea
下载PDF
Study on the Dining Etiquette Difference between China and Western Countries
2
作者 周甜 《海外英语》 2013年第2X期278-282,288,共6页
This paper attempts to discuss dining etiquette difference in China and western countries from the aspect of across-cultural communication by meticulously selecting many fresh examples. The author puts forward the mai... This paper attempts to discuss dining etiquette difference in China and western countries from the aspect of across-cultural communication by meticulously selecting many fresh examples. The author puts forward the main difference of dinner etiquette and the reasons for differences. It concludes that the methods for avoiding conflict. The research can offer a little help to the cross-cultural communication. 展开更多
关键词 Dining ETIQUETTE difference china and westERN coun
下载PDF
Formation of the Zengmu and Beikang Basins,and West Baram Line in the southwestern South China Sea margin
3
作者 Bing HAN Zhongxian ZHAO +7 位作者 Xiaofang WANG Zhen SUN Fucheng LI Benduo ZHU Yongjian YAO Liqiang LIU Tianyue PENG Genyuan LONG 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2023年第2期592-611,共20页
The Zengmu and Beikang basins,separated by the West Baram Line(WBL)in the southwestern South China Sea margin,display distinct geological and geophysical features.However,the nature of the basins and the WBL are debat... The Zengmu and Beikang basins,separated by the West Baram Line(WBL)in the southwestern South China Sea margin,display distinct geological and geophysical features.However,the nature of the basins and the WBL are debated.Here we explore this issue by conducting the stratigraphic and structural interpretation,faults and subsidence analysis,and lithospheric finite extension modelling using seismic data.Results show that the WBL is a trans-extensional fault zone comprising normal faults and flower structures mainly active in the Late Eocene to Early Miocene.The Zengmu Basin,to the southwest of the WBL,shows an overall synformal geometry,thick folded strata in the Late Eocene to Late Miocene(40.4-5.2 Ma),and pretty small normal faults at the basin edge,which imply that the Zengmu Basin is a foreland basin under the Luconia and Borneo collision in the Sarawak since the Eocene.Furthermore,the basin exhibits two stages of subsidence(fast in 40.4-30 Ma and slow in 30-0 Ma);but the amount of observed subsidence and heat flow are both greater than that predicted by crustal thinning.The Beikang Basin,to the NE of the WBL,consists of the syn-rift faulted sub-basins(45-16.4 Ma)and the post-rift less deformed sequences(16.4-0 Ma).The heat flow(~60 mW/m2)is also consistent with that predicted based on crustal thinning,inferring that it is a rifted basin.However,the basin shows three stages of subsidence(fast in 45-30 Ma,uplift in 30-16.4 Ma,and fast in 16.4-0 Ma).In the uplift stage,the strata were partly folded in the Late Oligocene and partly eroded in the Early Miocene,which is probably caused by the flexural bulging in response to the paleo-South China Sea subduction and the subsequent Dangerous Grounds and Borneo collision in the Sabah to the east of the WBL. 展开更多
关键词 tectonic subsidence foreland basin west Baram Line Zengmu Basin Beikang Basin South china Sea
下载PDF
The characteristic differences of tropical cyclones forming over the western North Pacific and the South China Sea 被引量:17
4
作者 YUAN Jinnan WANG Dongxiao +2 位作者 LIU Chunxia HUANG Jian HUANG Huijun 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2007年第4期29-43,共15页
The best track dataset of tropical cyclones in the western North Pacific (WNP) and the South China Sea (SCS) from 1977 to 2005 during the satellite era, the NCEP/NCAR reanalysis dataset and the extended reconstruc... The best track dataset of tropical cyclones in the western North Pacific (WNP) and the South China Sea (SCS) from 1977 to 2005 during the satellite era, the NCEP/NCAR reanalysis dataset and the extended reconstructed sea surface temperature dataset are employed in this study. The main climatological characteristics of tropical cyclone formation over the WNP and the SCS are compared. It is found that there is obviously different for the locations of tropical cyclone origins, achieving the lowest central pressure and termination points between over the WNP and over the SCS. The annual number of tropical cyclones forming over the SCS is obviously less than over the WNP, and there is a significant negative correlation with the correlation coefficient being - 0.36 at the 5% significance level between over the WNP and over the SCS. The mean speed of tropical cyclone moving is 6.5 m/s over the WNP and 4.6 m/s over the SCS. The mean lowest central pressure of tropical cyclones is obviously weaker over the SCS than over the WNP. The tropical cyclone days per year, mean total distance and total displacement of tropical cyclone traveled over the WNP are all obviously longer than those over the SCS. Tropical cyclone may intensify to Saffir - Simpson hurricane scale 5 over the WNP, but no tropical cyclone can intensify to Saffir - Simpson hurricane scale 3 over the SCS. The changing ranges of the radii (R15,R16) of the 15.4 m/s winds them and the 25.7 m/s winds over the WNP are obviously wider than those over the SCS, and the median values of the radii over the WNP are also larger than those over the SCS. For the same intensity of tropical cyclones, both radii have larger medians over the WNP than over the SCS. The correlations of annual mean tropical cyclone size parameters between over the WNP and over the SCS are not significant. At the same time, the asymmetric radii of tropical cyclones over the WNP are different from those over the SCS. 展开更多
关键词 characteristic differences tropical cyclone western North Pacific and South china Sea
下载PDF
On the relationship between convection intensity of South China Sea summer monsoon and air-sea temperature difference in the tropical oceans 被引量:12
5
作者 LINAilan LIANGJianyin +1 位作者 GUDejun WANGDongxiao 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2004年第2期267-278,共12页
The annual, interannual and inter-decadal variability of convection intensity of South China Sea (SCS) summer monsoon and air-sea temperature difference in the tropical ocean is analyzed, and their relationship is dis... The annual, interannual and inter-decadal variability of convection intensity of South China Sea (SCS) summer monsoon and air-sea temperature difference in the tropical ocean is analyzed, and their relationship is discussed using two data sets of 48-a SODA (simple ocean data assimilation) and NCEP/NCAR. Analyses show that in wintertime Indian Ocean (WIO), springtime central tropical Pacific (SCTP) and summertime South China Sea-West Pacific (SSCSWP), air-sea temperature difference is significantly associated with the convection intensity of South China Sea summer monsoon. Correlation of the inter-decadal time scale (above 10 a) is higher and more stable. There is inter-decadal variability of correlation in scales less than 10 a and it is related with the air-sea temperature difference itself for corresponding waters. The inter-decadal variability of the convection intensity during the South China Sea summer monsoon is closely related to the inter-decadal variability of the general circulation of the atmosphere. Since the late period of the 1970s, in the lower troposphere, the cross-equatorial flow from the Southern Hemisphere has intensified. At the upper troposphere layer, the South Asian high and cross-equatorial flow from the Northern Hemisphere has intensified at the same time. Then the monsoon cell has also strengthened and resulted in the reinforcing of the convection of South China Sea summer monsoon. 展开更多
关键词 tropical oceans air-sea temperature difference South china Sea summer monsoon convection Convec-tion intensity
下载PDF
The Trends in Maternal Mortality between 1996 and 2009 in Guizhou, China: Ethnic Differences and Associated Factors 被引量:2
6
作者 杜清 练武 +3 位作者 ?yvind Nss Espen Bjertness Bernadette Nirmal Kumar 石淑华 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2015年第1期140-146,共7页
China bears a large burden of global maternal mortality, and the largest burden of maternal deaths in China is in poor western provinces. This study aimed to investigate the trends in maternal mortality and its associ... China bears a large burden of global maternal mortality, and the largest burden of maternal deaths in China is in poor western provinces. This study aimed to investigate the trends in maternal mortality and its associated factors in Guizhou province of western China between 1996 and 2009, and examine differences between minority and non-minority counties. A population-based, longitudinal, retrospective study was performed in a poor western province of China with a considerably large ethnic minority population. All 86 counties/districts of Guizhou were included with population at county, township and village level. Maternal mortality data were collected from routine reporting database of Guizhou Provincial Health Bureau. Trend and comparative analyses and multivariate linear regression analyses were performed using SPSS 17.0. Maternal mortality ratio(MMR) and its change over time, differences between ethnic groups were analyzed. A declining trend in maternal mortality and rising trend in hospital delivery in Guizhou was observed; ethnic differences between two ethnic groups persisted. The reduction in maternal mortality between 1996 and 2009 was related with increased gross domestic product, decreased male illiteracy rate, and increased hospital delivery rate. We found the declining trends in maternal mortality in Guizhou with persisting ethnic differences. The declining trends are related with economic development, hospital delivery and male illiteracy. Effective health education on maternal health is urgently needed for the minority groups, and basic education for the new generation should be enhanced to eradicate the illiteracy. 展开更多
关键词 maternal mortality TRENDS ethnic differences china
下载PDF
Dining Culture Difference between China and America in The Joy Luck Club 被引量:1
7
作者 邓佳 《海外英语》 2013年第9X期228-229,共2页
The paper focuses on the dining culture difference between china and America according to analyzing the period of the film, The Joy Luck Club, in which Waverly takes her boyfriend Rich to meet his future mother-in-law.
关键词 dining CULTURE difference china AMERICA
下载PDF
Anti-Poverty Cooperation between China and West Asian and North African Countries in the Context of the Belt and Road Initiative
8
作者 Xiaoxing WANG 《Asian Agricultural Research》 2018年第12期1-5,9,共6页
As important parts of the Belt and Road Initiative,West Asia and North Africa have rich resources and prominent strategic position.Anti-poverty has always been a crucial social issue of China,West Asia and North Afric... As important parts of the Belt and Road Initiative,West Asia and North Africa have rich resources and prominent strategic position.Anti-poverty has always been a crucial social issue of China,West Asia and North Africa. Through literature review and data analysis,this paper analyzed the current situations of anti-poverty in West Asia and North Africa and the causes of poverty,and objectively summarized the realistic foundation of anti-poverty cooperation between China and West Asian and North African countries. On the basis of current situations,it put forward a path for anti-poverty cooperation between China and West Asian and North African countries,in the hope of providing decisionmaking basis and policy recommendations for China to undertake anti-poverty cooperation in the worldwide range. 展开更多
关键词 the BELT and Road INITIATIVE china west Asia and NORTH Africa ANTI-POVERTY COOPERATION
下载PDF
The Exploration to the Historical Origin of Differences between Urban and Rural Areas in China
9
作者 ZHU Hong-liang ZHANG Rui-qing 《Asian Agricultural Research》 2011年第1期118-121,126,共5页
In order to understand the historical origins of encircling the cities from the rural areas implemented by the Communist Party of China and the current dual structures of urban and rural development, urban-rural diffe... In order to understand the historical origins of encircling the cities from the rural areas implemented by the Communist Party of China and the current dual structures of urban and rural development, urban-rural differences are analyzed from the four aspects of production mode, management mode, culture and social division of labor. Industrial development in modern times has promoted the modernization of urban production in China. But the rural areas still maintain their traditional self-sufficient natural economy. After the Opium War, the process of modernization of city politics is promoted by more economic elements of capitalism and the formation of Chinese bourgeoisie. During the management of urban modernization, rural areas still adopt the traditional self-management mode. In the aspect of culture, city is the center of development, having large population, developed traffic, and prosperous culture. But the village is lack of information and its culture is relatively backward. In modern times, affected by the foreign capitalist, urban area has become the center of modern productivity. After separating from agriculture, handicraft industry has transferred into urban areas and the social division of labor in both urban and rural areas has shown great changes. Thus, a new pattern of "Urban Industry, Rural Agriculture" has formed. 展开更多
关键词 Urban and rural areas RELATION difference HISTORY china
下载PDF
Comparison of Human Rights Values Between the East and the West——Summary of the 2019 China-Europe Seminar on Human Rights 被引量:1
10
作者 李蕾 滕锐 PAN Yingzhao(译) 《The Journal of Human Rights》 2019年第5期695-707,共13页
The 2019 China-Europe Seminar on Human Rights hosted by the China Society for Human Rights Studies and Austria-China Friendship Association was successfully held in Austria on June 21,2019.Through this conference,Chin... The 2019 China-Europe Seminar on Human Rights hosted by the China Society for Human Rights Studies and Austria-China Friendship Association was successfully held in Austria on June 21,2019.Through this conference,China,as an important representative of Eastern countries of human rights,demonstrated its fruitful theoretical and practical human rights achievements to European countries.The conference also witnessed lively communication and exchanges on human rights values and the human rights discourse system between China and the West,during which scholars of the East and the West discussed the universality and particularity of human rights,and the evolution of human rights under different historical and cultural values.The conference advocated that the concept of a community with a shared future for human beings proposed by China should be incorporated into human rights governance of sovereign states and the international community.The convergence and integration of the human rights concepts of the East and the West will inevitably lead human rights practices of the East and the West to embark on a new journey. 展开更多
关键词 the east and the west china-Europe human RIGHTS values
下载PDF
Comparison and Inspiration of the Theme of Relationship between Human Beings and Nature in the Field of Literature between China and the West
11
作者 Ren Jiong 《学术界》 CSSCI 北大核心 2015年第4期298-302,共5页
The relationship between human beings and nature influences the expressions and manifestations of literature. Literature can spy on the nature exploration of human society and ideological values in the thinking and be... The relationship between human beings and nature influences the expressions and manifestations of literature. Literature can spy on the nature exploration of human society and ideological values in the thinking and behavior patterns,expressing the relationship between human beings and nature. Through expressions of literature in China and the West,we draw lessons from W estern literary expressions in the developing relationship between man and nature,and get inspiration for the development of Chinese literature. 展开更多
关键词 人与自然 文学 西方 中国 行为模式 人类社会 价值观
下载PDF
Hand in Hand East and West to Build a Glorious Gansu——Talk on the cooperation between the East and West of China by Mr.Cui Zhenghua,vice governor of Gansu Province
12
作者 Xiao Qiang,staff reporter 《China's Foreign Trade》 1996年第11期16-16,共1页
To implement the CPC CentralCommittee’s strategy of slanting theeconomic construction to the Midand West of China and to further promote thedevelopment and cooperation of economyand trade between the East and West, t... To implement the CPC CentralCommittee’s strategy of slanting theeconomic construction to the Midand West of China and to further promote thedevelopment and cooperation of economyand trade between the East and West, theEast-West Business and Trade Talks wereheld by the China Council for the Promotionof International Trade (CCPIT). At theconference, Mr. Cui Zhenghua, vice governorof Gansu Province and concurrently chairmanof the Gansu Subcouncil of the CCPIT,delivered a speech on the economiccooperation and development between theEast and West of China. 展开更多
关键词 west In Hand in Hand East and west to Build a Glorious Gansu Talk on the cooperation between the East and west of china by Mr.Cui Zhenghua vice governor of Gansu Province
下载PDF
The Educational Differences between China and America
13
作者 谢咏雪 《海外英语》 2013年第14期273-274,共2页
Nowadays, with the fast development of science and technology in China, there is an increasing number of people going to study abroad (taking America as an example). For one hand, they want to get a better educational... Nowadays, with the fast development of science and technology in China, there is an increasing number of people going to study abroad (taking America as an example). For one hand, they want to get a better educational background to have a more promising career in the future. For the other, they want to change the way of getting knowledge, because they think the Chinese educational system still has a lot to be improved. With such tendency, more people are looking forward to an article that has a thorough analysis to reveal the educational differences between China and America from couple of aspects. It elaborates the educational differences in many ways with authentic research then comes to an analytic conclusion on what we can do to make a contribution to the Chinese educational system as a graduate student. 展开更多
关键词 EDUCATIONAL SYSTEM china AMERICA differenceS schoo
下载PDF
On Chinese Traditional Culture from the Perspective of Cultural Exchange between China and the West
14
作者 Cao Guihua 《学术界》 CSSCI 北大核心 2017年第7期302-310,共9页
With the strengthening of globalization and closer ties between countries,all-round exchanges and cooperation have become an inevitable trend.In the new era,the cultural exchange between China and the West presents an... With the strengthening of globalization and closer ties between countries,all-round exchanges and cooperation have become an inevitable trend.In the new era,the cultural exchange between China and the West presents an unprecedented depth and breadth.Chinese traditional culture,which has made great contributions to Oriental culture and even the world culture,has been developed,in the process of constant conflict,digestion,and absorption while entering other countries in the world.The inclusiveness of Chinese traditional culture has made it survive and thrive in absorbing the quintessence of foreign culture,which makes it contain new contents.In the process of Chinese and Western cultural exchanges,some parts of the essence traditional Chinese culture which are ignored should be given certain inclination in policy and guided by strengthening the education of Chinese traditional culture. 展开更多
关键词 中国传统文化 文化交流 西方 世界文化 东方文化 外来文化 全球化 包容性
下载PDF
Differences between China and Japan in the Eyes of Winners of the First Essay Contest on China-Japan Friendship
15
作者 Yohei Ito 《International Understanding》 2017年第2期62-64,共3页
The First Essay Contest on China-Japan Friendship jointly held by Japan-China Society and Chinese Association for International Understanding was successfully organized from April to July 2016.According to the selecti... The First Essay Contest on China-Japan Friendship jointly held by Japan-China Society and Chinese Association for International Understanding was successfully organized from April to July 2016.According to the selection of 8 review 展开更多
关键词 of As In is it were in differences between china and Japan in the Eyes of Winners of the First Essay Contest on china-Japan Friendship on have from
下载PDF
The Differences between County,County-level City and Municipal District in the System of Administrative Divisions in China
16
作者 Biao Zhao Kaiyong Wang 《Journal of Geographical Research》 2022年第1期25-38,共14页
Administrative division is an important means of political power reorganization and management,resource integration and optimal allocation,which profoundly shapes the spatial layout of urban development in China.To cl... Administrative division is an important means of political power reorganization and management,resource integration and optimal allocation,which profoundly shapes the spatial layout of urban development in China.To clarify and compare differences between counties,county-level cities and municipal districts is the primary premise for the study of administrative division and urban development.This paper analyzes the institutional differences between counties and county-level cities,as well as counties,county-level cities and municipal districts,from the aspects of organizational structure,urban construction planning,land management,finance,taxation and public services.The research shows that the establishment of counties,county-level cities and municipal districts adapt to different levels and stages of economic and social development,and the conversion from county to county-level city and the conversion from county(or county-level city)to municipal district are both important transformation ways to change their administrative systems,which has different management system and operation pattern.At the same time,the transformation of county-level administrative region is also a“double-edged sword”,we should think about the administrative system as a whole to decide whether it should be adjusted,and effectively respond to the actual needs of local economic and social development. 展开更多
关键词 Administrative division COUNTY County-level city difference Municipal district Political geography china
下载PDF
How Big Is the Gap Between China's East and West?
17
作者 Xu Hongwei Li Yongwen 《China's Foreign Trade》 2000年第3期41-42,共2页
关键词 than How Big Is the Gap between china’s East and west
下载PDF
Can Industrial Structure Upgrading Restrain Industrial Land Expansion?Evidence from China
18
作者 CHEN Wei LI Qiao +1 位作者 ZHANG Sun ZHOU Xue 《Chinese Geographical Science》 SCIE CSCD 2024年第3期504-518,共15页
China has made great achievements in industrial development and is transforming into a powerful manufacturing country.Meanwhile,the industrial land scale is also expanding.However,whether industrial structure upgradin... China has made great achievements in industrial development and is transforming into a powerful manufacturing country.Meanwhile,the industrial land scale is also expanding.However,whether industrial structure upgrading achieves the purpose of restraining industrial land expansion remains unanswered.By calculating the industrial land structure index(ILSI)and industrial land expansion scale(ILES),this study analyzed their temporal and spatial distribution characteristics at both regional and city levels from 2007to 2020 in China.Results show that industrial land expansion presents a different trend in the four regions,the ILES in the eastern region is the largest,and the speed of industrial land expansion has declined since 2013,but it has gradually increased since 2016.The ILSI of the eastern and central regions is higher than that of the western and northeastern regions.Furthermore,a spatial Durbin model(SDM)has been established to estimate the spatial effect of industrial structure upgrading on industrial land expansion from 2007 to2020.Notably,industrial structure upgrading has not slowed industrial land expansion.The eastern and western regions require a greater amount of industrial land while upgrading the industrial structure.The improvement of the infrastructure level and international trade level has promoted industrial land expansion. 展开更多
关键词 industrial development industrial structure upgrading industrial land expansion regional differences china
下载PDF
Enhancing transboundary natural tourism resources governance:unveiling the spatial pattern and its influencing factors
19
作者 ZHANG Shengrui ZHANG Tongyan +1 位作者 JU Hongrun WANG Yingjie 《Journal of Mountain Science》 SCIE CSCD 2024年第3期973-986,共14页
Tourism resources that span provincial boundaries in China play a pivotal role in regional development,yet effective governance poses persistent challenges.This study addresses this issue by constructing a comprehensi... Tourism resources that span provincial boundaries in China play a pivotal role in regional development,yet effective governance poses persistent challenges.This study addresses this issue by constructing a comprehensive database of transboundary natural tourism resources(TNTR)through amalgamation of diverse data sources.Utilizing the Getis-Ord Gi^(*),kernel density estimation,and geographical detectors,we scrutinize the spatial patterns of TNTR,focusing on both named and unnamed entities,while exploring the influencing factors.Our findings reveal 7883 identified TNTR in China,with mountain tourism resources emerging as the predominant type.Among provinces,Hunan boasts the highest count,while Shanghai exhibits the lowest.Southern China demonstrates a pronounced clustering trend in TNTR distribution,with the spatial arrangement of biological landscapes appearing more random compared to geological and water landscapes.Western China,characterized by intricate terrain,exhibits fewer TNTR,concurrently unveiling a significant presence of unnamed natural tourism resources.Crucially,administrative segmentation influences TNTR development,generating disparities in regional goals,developmental stages and intensities,and management approaches.In response to these variations,we advocate for strengthening the naming of the unnamed transboundary tourism resources,constructing a geographic database of TNTR for government and establishing a collaborative management mechanism based on TNTR database.Our research contributes to elucidating the intricate landscape of TNTR,offering insights for tailored governance strategies in the realm of cross-provincial tourism resource management. 展开更多
关键词 Transboundary natural tourism resources(TNTR) Spatial difference Spatial autocorrelation Governance optimization china
下载PDF
Drivers,Trends,and Patterns of Changing Vegetation-greenness in Nansha Islands,China from 2016 to 2022
20
作者 TANG Jiasheng FU Dongjie +2 位作者 SU Fenzhen YU Hao WANG Xinhui 《Chinese Geographical Science》 SCIE CSCD 2024年第4期662-673,共12页
Changes in vegetation status generally also represents changes in the ecological health of islands and reefs(IRs).However,studies are limited of drivers and trends of vegetation change of Nansha Islands,China and how ... Changes in vegetation status generally also represents changes in the ecological health of islands and reefs(IRs).However,studies are limited of drivers and trends of vegetation change of Nansha Islands,China and how they relate to climate change and human activities.To resolve this limitation,we studied changes to the Normalized Difference Vegetation Index(NDVI)vegetation-greenness index for 22 IRs of Nansha Islands during normal and extreme conditions.Trends of vegetation greenness were analyzed using Sen's slope and Mann-Kendall test at two spatial scales(pixel and island),and driving factor analyses were performed by time-lagged partial correlation analyses.These were related to impacts from human activities and climatic factors under normal(temperature,precipitation,radiation,and Normalized Difference Built-up Index(NDBI))and extreme conditions(wind speed and latitude of IRs)from 2016 to 2022.Results showed:1)among the 22 IRs,NDVI increased/decreased significantly in 15/4 IRs,respectively.Huayang Reef had the highest NDVI change-rate(0.48%/mon),and Zhongye Island had the lowest(–0.29%/mon).Local spatial patterns were in one of two forms:dotted-form,and degradation in banded-form.2)Under normal conditions,human activities(characterized by NDBI)had higher impacts on vegetation-greenness than other factors.3)Under extreme conditions,wind speed(R^(2)=0.2337,P<0.05)and latitude(R^(2)=0.2769,P<0.05)provided limited explanation for changes from typhoon events.Our results provide scientific support for the sustainable development of Nansha Islands and the United Nations‘Ocean Decade’initiative. 展开更多
关键词 island and reefs(IRs) Normalized difference Vegetation Index(NDVI) vegetation-greenness change-rate Sen's slope Nansha Islands china
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部