期刊文献+
共找到2,608篇文章
< 1 2 131 >
每页显示 20 50 100
Spatial difference and mechanisms of influence of geo-economy in the border areas of China 被引量:14
1
作者 SONG Tao CHENG Yi +1 位作者 LIU Weidong LIU Hui 《Journal of Geographical Sciences》 SCIE CSCD 2017年第12期1463-1480,共18页
Border areas are both important territorial security barriers and portals to the out-side world. Considering the complicated geopolitical environment of China's inland borders, analysis of the current status and mech... Border areas are both important territorial security barriers and portals to the out-side world. Considering the complicated geopolitical environment of China's inland borders, analysis of the current status and mechanisms of influence of geo-economy in border areas is of great significance. Namely, this analysis is important towards leveraging traditional ad- vantages to accelerate China's development prehensive analysis, our study constructed n border and minority areas. Based on a com- a framework to analyze the geo-economy in border areas, and also introduced three indexes: local economy, export-oriented economy and local development. In addition, our study systematically described geo-economic evolu- tion in the border areas of China. We also analyzed the mechanism of geo-economic spatial differentiation in these border areas by using geographical detectors. Our results indicated that the level of geo-economic influence in border areas has grown steadily with significant spatial differentiation. The absolute geo-economic dominance of Northeast China gradually declines over time. Areas with geo-economic advantages are highly dispersed, showing a spatial polarization pattern with several polar nuclei including Mudanjiang city (Northeast China), Baotou city (Inner Mongolia), Bortala Mongol Autonomous Prefecture (Xinjiang), Dehong Dai and Jingpo Autonomous Prefecture and the city of Chongzuo (Yunnan-Guangxi area). Geo-economics in border area is mainly influenced by national policies, the develop- ment level of neighboring countries, as well as the desire of these countries to cooperate with China in bilateral trade. Favorable policies, traffic, cultural proximity and other factors also impact the geo-economics of border areas significantly. The Inner Mongolia and Tibet areas are mainly influenced by neighboring countries, while Northeast China and Xinjiang are mainly affected by Chinese policies; the Yunnan-Guangxi area is influenced by a combination of these factors. At the end of the study, we provide our recommendations for developing policies that further geo-economic advantages in complex geopolitical environments and in areas with varied development. 展开更多
关键词 border area GEO-ECONOMY GEOPOLITICS geography detector
原文传递
Post-earthquake economic resilience and recovery efficiency in the border areas of the Tibetan Plateau: A case study of areas affected by the Wenchuan Ms 8.0 Earthquake in Sichuan, China in 2008 被引量:11
2
作者 ZHOU Kan LIU Baoyin FAN Jie 《Journal of Geographical Sciences》 SCIE CSCD 2020年第8期1363-1381,共19页
The border areas of the Tibetan Plateau and the neighboring mountainous areas have a high incidence of earthquakes with a magnitude greater than M<sub>s</sub> 5.0, as well as having a dense distribution of... The border areas of the Tibetan Plateau and the neighboring mountainous areas have a high incidence of earthquakes with a magnitude greater than M<sub>s</sub> 5.0, as well as having a dense distribution of geological disasters such as collapses, landslides, and debris flows. Revealing the post-disaster economic development and recovery process is very important for enhancing disaster prevention and response capacity in order to formulate control policies and recovery methods for post-disaster economic reconstruction based on economic resilience. Using long-term socioeconomic data and the autoregressive integrated moving average (ARIMA) model, this paper calculated the economic resilience index of the areas most severely affected by the Wenchuan Earthquake of 2008 and adopted the improved variable returns to scale (VRS) date envelopment analysis (DEA) model and the Malmquist productivity index to analyze the efficiency and effect of annual post-disaster recovery. The results show that: (1) the economic resilience index of the areas most severely affected by the Wenchuan Earthquake was 0.877. The earthquake resulted in a short-term economic recession in the affected areas, but the economy returned to pre-quake levels within two years. In addition, the industrial economy was less resilient than agriculture and the service industry. (2) The comprehensive economic recovery efficiency of the disaster-stricken area in the year following the disaster was 0.603. The comprehensive efficiency, the pure technical efficiency, and the scale efficiency of the plain and hilly areas were significantly greater than those of the plateau and mountain areas. (3) The annual fluctuation in total factor productivity (TFP) following the disaster was considerable, and the economic recovery efficiency decreased significantly, resulting in a short-term economic recession. The TFP index returned to steady state following decreases of 33.7% and 15.2%, respectively, in the two years following the disaster. (4) The significant decrease in the post-disaster recovery efficiency was caused mainly by technological changes, and the renewal of the production system was the leading factor in determining the economic resilience following the disaster. With the decline in the scale of economic recovery following the earthquake, long-term economic recovery in the disaster-stricken areas depended mainly on pure technical efficiency, and the improvement in the latter was the driving force for maintaining the long-term growth of the post-disaster economy. Therefore, according to the local characteristics of natural environment and economic system, the disaster-stricken areas need to actively change and readjust their economic structures. At the same time, attention should be paid to updating the production system to enhance the level of technological progress and give full play to the scale effects of large-scale capital, new facilities, human resources, and other investment factors following the disaster so as to enhance the impact of economic resilience and recovery efficiency in response to the disaster. 展开更多
关键词 economic resilience recovery efficiency Malmquist productivity index post-disaster reconstruction area Wenchuan Earthquake border areas of the Tibetan Plateau
原文传递
Spatial-temporal Evolution Analysis on Land Use Multifunctionality in the China-Vietnam Border Area 被引量:1
3
作者 HUANG Tianneng WANG Nian 《Chinese Geographical Science》 SCIE CSCD 2022年第6期995-1012,共18页
Exploring the spatial and temporal evolution characteristics of the border land use multifunctionality(LUMF)provides insights for taking advantage of border land use and optimizing border land use policies.Based on th... Exploring the spatial and temporal evolution characteristics of the border land use multifunctionality(LUMF)provides insights for taking advantage of border land use and optimizing border land use policies.Based on the improved Technique for Order Preference by Similarity to an Ideal Solution(TOPSIS)mode,this study identifies and evaluates the LUMFs in the China-Vietnam border area between 2000 and 2018 from the perspectives of agricultural production,social security,ecological service,landscape recreation,and national security.The results show that:1)The comprehensive land use functions in most counties and cities continued to be improved.2)The comprehensive land use function exhibits remarkable spatial divergence and aggregation characteristics.The high-value area of the agricultural production function and social security function evolves from the east to the west.In addition,the spatial evolution of ecological service function is complicated,without an obvious spatial divergence and aggregation pattern.The landscape recreation function shows different spatial differentiation characteristics in the early and middle stage,and forms a large cluster in the later stage.Finally,the spatial evolution pattern of the national security function is significant.3)Designing differentiated border land policies,improving border land use security,and establishing a long-term mechanism for ecological protection and ecological compensation can aid in optimizing the LUMF level in the border area. 展开更多
关键词 land use multifunctionality spatial-temporal evolution characteristics improved Technique for Order Preference by Similarity to an Ideal Solution(TOPSIS) spatial analysis China-Vietnam border area
在线阅读 下载PDF
Analysis of Vagina Microecology and Investigation of Common Infection in Border Area of Chongzuo City
4
作者 Huan Zhao Yan Chen +8 位作者 Liuxian Huang Tianyou Huang Miaohong Li Wanwei Yang Qing Peng Lili Yu Haisha Wei Jianlan Gan Xiuge Li 《Advances in Reproductive Sciences》 2022年第1期1-11,共11页
Objective: To investigate the microecology and common infection of the female vagina in border area of Chongzuo City. Methods: Female patients in the outpatient department and inpatient department of gynecology of our... Objective: To investigate the microecology and common infection of the female vagina in border area of Chongzuo City. Methods: Female patients in the outpatient department and inpatient department of gynecology of our hospital from April 1, 2018 to August 23, 2021 were selected as the research objects. The reproductive tract secretions of all patients were examined by microecological examination, morphological examination, chemical analysis and microscopic examination, and the results of various indicators were statistically analyzed to draw relevant conclusions. Results: Among the 1498 women with vaginal micro- ecological imbalances, cleanliness was determined to be 534 cases of degree II, 868 cases of degree III, and 96 cases of degree IV;Nugent scores were 9 - 10 in 9 cases, 8 in 122 cases, 7 in 30 cases, 6 in 18 cases, 5 in 8 cases, 4 in 717 cases, 3 in 248 cases, 2 in 209 cases, 1 in 118 cases, and 0 in 19 cases. AV scores were 8 in 1 case, 7 in 1 case, 6 in 2 cases, 5 in 9 cases, 4 in 84 cases, 3 in 207 cases, 2 in 850 cases, 1 in 284 cases, and 0 in 60 cases. Among the pathogen infections, 99 cases were mycoplasma, 361 cases were candida, 199 cases were bacterial and 8 cases were trichomonas;In chemical analysis, there were 138 cases with pH 5.1, 326 cases with pH 4.8, 775 cases with pH 4.6, 217 cases with pH 4.4, and 42 cases with pH 4.1;meanwhile, 1390 cases were positive for hydrogen peroxide, 505 cases were positive for glucosidase, 487 cases were positive for acetylglucosaminidase, 184 cases were positive for sialidase, 290 cases were positive for proline amino-peptidase, 501 cases were positive for coagulase, and 1064 cases were positive for leukocyte esterase. Conclusion: Female reproductive tract microecology is more complex, and the pathogens of infection are also diverse. A systematic examination can clarify the occurrence and development of the disease, and then provide reliable laboratory data for clinical treatment and guide clinical medication. 展开更多
关键词 border area Chongzuo City FEMALE Reproductive Tract MICROECOLOGY INFECTION
在线阅读 下载PDF
Study on the Development and Protection of the Historical Figures Resources in China's Guangxi Border Areas -- Mrs. WA Cultural Resource Is Taken for Example
5
作者 Hongxia LI Zhili ZHOU 《International Journal of Technology Management》 2013年第11期32-34,共3页
Guangxi is in the southwest border of China, and Guilin landscape and ethnic customs as the two "trump cards" have been widely utilized in the communication between Guaaagxi and the outside world. In fact, Guangxi o... Guangxi is in the southwest border of China, and Guilin landscape and ethnic customs as the two "trump cards" have been widely utilized in the communication between Guaaagxi and the outside world. In fact, Guangxi owns many cultural resources such as humanity history, characteristic diet, and local operas to be further promoted, among which historical figures resources are especially abundant. However, the development and protection of the historical figures resources are inconsistent with the current economic and social development, and feature obviously certain hysteresis. In this paper, by taking Mrs. WA who was a heroine of the Zhuang nationality to resist foreign invasions in the Ming Dynasty, the necessary development road of the historical figures resources is explored based on analyzing the current development and protection of the historical figures resources in China' s Guangxi border areas, and then innovative concepts and new ideas are proposed with great efforts. 展开更多
关键词 Guangxi border areas Historical Figures Resources Development and Protection Mrs. WA
在线阅读 下载PDF
Research on the Employment View of Acupuncture and Tuina Undergraduates in Minority Border Areas from Students’ Perspective
6
作者 Rongshuang Yang Kai Yuan +5 位作者 Minjie Yin Ruilu Liu Zhihao Zhang Lijuan Wang Yanfang Yang Xinghe Zhang 《Journal of Contemporary Educational Research》 2024年第8期265-275,共11页
With the popularization of higher education in China,the employment situation of college students is more complex and severe.This paper adopts the questionnaire method to explore the employment view of acupuncture and... With the popularization of higher education in China,the employment situation of college students is more complex and severe.This paper adopts the questionnaire method to explore the employment view of acupuncture and tuina undergraduates of Yunnan University of Traditional Chinese Medicine.The employment concept of acupuncture and tuina undergraduates in the minority border areas has changed greatly.After graduation,97.95%of students choose to work in fields related to medicine and acupuncture,prefer positions close to home,and are attracted to high-salary companies,among other factors.Therefore,enhancing the competitive advantages of medical students by guiding their career planning,providing employment selection advice,fostering innovation and entrepreneurship,improving basic skills,and offering graduate entrance examination guidance is crucial for broadening their employment opportunities. 展开更多
关键词 Undergraduate EMPLOYMENT Minority border areas Acupuncture and tuina
暂未订购
THE REFORM & DEVELOPMENT OF CAS INSTITUTES IN BORDER AREAS
7
作者 Zhou Junlin(Xinjiang Institute of Physics, CAS ) 《Bulletin of the Chinese Academy of Sciences》 1997年第3期259-263,共5页
This article offers an analytic explanation of the geographic, historical and environmental features as well as the strategic positions of CAS-affiliated border area institutes (BAIs). In addition, it puts forward sev... This article offers an analytic explanation of the geographic, historical and environmental features as well as the strategic positions of CAS-affiliated border area institutes (BAIs). In addition, it puts forward several suggestions in a bid to advance their reform and development. 展开更多
关键词 CAS DEVELOPMENT OF CAS INSTITUTES IN border areaS THE REFORM
在线阅读 下载PDF
Hydrochemical characteristics and controlling factors of natural water in the border areas of the Qinghai-Tibet Plateau 被引量:7
8
作者 TIAN Yuan YU Chengqun +2 位作者 ZHA Xinjie GAO Xing DAI Erfu 《Journal of Geographical Sciences》 SCIE CSCD 2019年第11期1876-1894,共19页
The special geography and human environment of the Qinghai-Tibet Plateau has created the unique hydrochemical characteristics of the region’s natural water,which has been preserved in a largely natural state.However,... The special geography and human environment of the Qinghai-Tibet Plateau has created the unique hydrochemical characteristics of the region’s natural water,which has been preserved in a largely natural state.However,as the intensity of anthropogenic activities in the region has continued to increase,the water environment and hydrochemical characteristics of the Qinghai-Tibet Plateau have altered.In this study,water samples from the western,southern,and northeastern border areas of the Qinghai-Tibet Plateau,where human activities are ongoing,were collected,analyzed,and measured.The regional differences and factors controlling them were also investigated.The key results were obtained as follows.(1) Differences in the physical properties and hydrochemical characteristics,and their controlling factors,occurred in the different boundary areas of the Qinghai-Tibet Plateau.These differences were mainly the consequence of the geographical environment and geological conditions.(2) The water quality was good and suitable for drinking,with most samples meeting GB (Chinese national) and WHO (World Health Organization) drinking water standards.(3) The chemical properties of water were mainly controlled by the weathering of carbonates and the dissolution of evaporative rocks,with the former the most influential.(4) The biological quality indicators of natural water in the border areas were far superior to GB and WHO drinking water standards. 展开更多
关键词 border area of the Qinghai-Tibet PLATEAU NATURAL water hydrochemical characteristics controlling FACTORS
原文传递
Let Education Play a More Role in Rural Revitalization—Taking Guangxi Border Ethnic Areas as an Example
9
作者 Haibin Zhu Luyao Hou 《Journal of Contemporary Educational Research》 2020年第6期75-78,共4页
The development of education and the implementation of the strategy of rural revitalization are both decisions made by the Chinese government according to the needs of the country.The article first elaborates the rela... The development of education and the implementation of the strategy of rural revitalization are both decisions made by the Chinese government according to the needs of the country.The article first elaborates the relationship between education and rural revitalization.Second,it takes Guangxi border ethnic areas as an example to analyze the current problems and deficiencies in the development of education.Finally,it puts forward targeted suggestions,including a hundredyear plan and education-oriented.Education is the cornerstone of national revitalization.With a view to enabling education to play a more effective role in rural revitalization. 展开更多
关键词 EDUCATION Rural revitalization Guangxi border ethnic areas
在线阅读 下载PDF
云南边境地区稻种资源的SSR标记遗传多样性及其主要农艺性状关联性分析
10
作者 汤翠凤 阿新祥 +5 位作者 董超 张斐斐 杨雅云 杨红梅 戴陆园 苏振喜 《作物杂志》 北大核心 2026年第1期33-46,I0004-I0007,共18页
为分析我国云南边境地区稻种资源的遗传多样性,并发掘与主要农艺性状密切相关的SSR标记,以新收集自我国云南及毗邻的缅甸、老挝的376份稻种资源为材料,分为3个分析单元,观测11个表型性状,采用27对SSR标记进行遗传多样性及与表型性状的... 为分析我国云南边境地区稻种资源的遗传多样性,并发掘与主要农艺性状密切相关的SSR标记,以新收集自我国云南及毗邻的缅甸、老挝的376份稻种资源为材料,分为3个分析单元,观测11个表型性状,采用27对SSR标记进行遗传多样性及与表型性状的关联性分析。结果显示,共检测到142个等位变异位点,其中100个为稀有等位变异位点,9个为特有等位变异位点;基于6个遗传多样性参数的综合评估,3个分析单元稻种资源的得分排序为中国云南分析单元>缅甸分析单元>老挝分析单元;在27对SSR标记中,RM214、RM1086、RM5481、RM6089、RM1509和RM7479与表型性状的关联性较密切,可解释穗长、穗抽出度、穗实粒数、穗秕粒数、穗粒数和千粒重等性状10.0%以上的变化。表型性状的主成分分析提取出4个主成分,累计贡献率为77.218%;筛选出综合得分>1.000的优异资源36份,其中得分>2.000的为花壳、纳列5和毫糯浪,分别具有作为多穗大穗型、大穗型和糯性亲本的潜力。 展开更多
关键词 云南边境地区 稻种资源 遗传多样性 SSR标记 关联性分析
原文传递
我国边境地区基础教育政策供给——国家战略视角下的主要问题、原因剖析与创新完善思考
11
作者 庞丽娟 杨小敏 +1 位作者 陆振杰 王红蕾 《北京师范大学学报(社会科学版)》 北大核心 2026年第1期47-54,共8页
边境地区基础教育,因其特殊的地域空间特点和国家战略属性,不仅是边境公共服务和社会建设的重要内容,更是国家安全与稳边固边的重要支撑。科学与适宜的边境地区基础教育政策供给对其实现高质量发展和功能发挥至关重要。基于对边疆省区... 边境地区基础教育,因其特殊的地域空间特点和国家战略属性,不仅是边境公共服务和社会建设的重要内容,更是国家安全与稳边固边的重要支撑。科学与适宜的边境地区基础教育政策供给对其实现高质量发展和功能发挥至关重要。基于对边疆省区的实地调研与相关政策研究,深入分析了当前我国边境地区基础教育政策与新时代国家战略与教育发展需求的不适应,存在的主要问题及深层制约。提出了强化立足国家战略的“教育戍边”顶层设计,建立“中央领导、省级统筹”的纵向管理体制,创新完善具有战略适配性和现实针对性的边境教育政策制度等政策思考,以期为我国边境基础教育政策创新优化提供思路与建议,助力边境教育高质量发展和边疆治理现代化。 展开更多
关键词 边境地区 教育戍边 基础教育政策供给 政策优化
在线阅读 下载PDF
哈萨克斯坦的边疆观及边境地区发展
12
作者 杨进 孙壮志 《世界民族》 北大核心 2026年第1期52-63,共12页
1991年苏联解体,哈萨克斯坦宣告独立,这一重大的历史事件使其国家发展轨迹发生了根本性变化。曾经的国内行政边界上升为国家疆界,哈萨克斯坦成为中亚五国中国土面积最大的国家,造就了其漫长的边界线。在新的历史语境下,哈萨克斯坦对自... 1991年苏联解体,哈萨克斯坦宣告独立,这一重大的历史事件使其国家发展轨迹发生了根本性变化。曾经的国内行政边界上升为国家疆界,哈萨克斯坦成为中亚五国中国土面积最大的国家,造就了其漫长的边界线。在新的历史语境下,哈萨克斯坦对自身边疆地区的战略意义有了全新认知。这种认知的转变,深刻地反映了其在维护国家主权、促进经济发展,以及保障国家安全等方面的战略考量,实践出超越地理概念,涉及边疆地区政治、经济、民族、文化、社会、军事等多个层面的新边疆观,展现出现代性、民族性和外部性的鲜明特点,有效维护了边疆地区的安全与社会稳定,展示了国家治理能力。 展开更多
关键词 哈萨克斯坦 边疆观 边疆治理 边境地区
原文传递
以发展和安全统筹推进边疆地区现代化——深入学习领会“十五五”规划建议
13
作者 孙久文 《西北民族大学学报(哲学社会科学版)》 北大核心 2026年第1期7-11,共5页
边疆地区在基础设施建设、特色产业培育(如新能源、旅游业)以及对外开放等领域取得了显著成就,但仍面临经济水平偏低、人才短缺、生态压力大、安全形势复杂等多重挑战。基于总体国家安全观,该区域要以发展和安全统筹推进现代化:健全边... 边疆地区在基础设施建设、特色产业培育(如新能源、旅游业)以及对外开放等领域取得了显著成就,但仍面临经济水平偏低、人才短缺、生态压力大、安全形势复杂等多重挑战。基于总体国家安全观,该区域要以发展和安全统筹推进现代化:健全边疆治理体系、强化风险防控、深化“兴边富民”战略;同时挖掘边疆独特优势(区位、资源储备、特色经济、政策倾斜),将其转化为发展动能。“十五五”时期,边疆地区需发挥“双循环”枢纽功能:建设国际物流与供应链枢纽、扩大跨境数字金融服务、打造能源资源基地、发展特色文旅经济,实现从地理边缘区到双向开放增长极的转变,筑牢发展和安全屏障。 展开更多
关键词 “十五五”规划 边疆地区 中国式现代化 新安全格局 新发展格局
在线阅读 下载PDF
边疆民族村寨产业振兴发展路径研究——以广西凭祥市LJ村为例
14
作者 罗家珩 《青海民族大学学报(社会科学版)》 2026年第1期66-73,共8页
实施乡村振兴发展战略,边疆民族村寨既是重点,也是难点,推进边疆村寨的乡村振兴,可有效治理边疆民族村寨发展不平衡不充分、农业农村发展结构性失衡等问题,还能规避国家在工业化、城镇化迅速发展的阶段,出现农村经济结构单一化、产业衰... 实施乡村振兴发展战略,边疆民族村寨既是重点,也是难点,推进边疆村寨的乡村振兴,可有效治理边疆民族村寨发展不平衡不充分、农业农村发展结构性失衡等问题,还能规避国家在工业化、城镇化迅速发展的阶段,出现农村经济结构单一化、产业衰退、多中心治理以及村民参与积极性减弱等问题。乡村振兴,关键在于产业振兴,产业兴旺,是解决农业农村发展各类问题的抓手。本文以广西凭祥市上石镇LJ村为例,将边疆民族村寨的发展聚焦到产业振兴实施层面,认为产业振兴是增添边疆民族村寨发展的新动能、破解不平衡不充分的着力点和高质量推进乡村振兴的主引擎。同时从产业振兴助力乡村振兴的层面探究边疆民族村寨产业振兴发展的实践路径,旨在推动边疆民族村寨乡村振兴发展提供实证支持和理论基础。 展开更多
关键词 边疆民族村寨 产业振兴 农业农村现代化 路径优化
在线阅读 下载PDF
习近平生态文明思想引领新时代兴边富民行动的内在机理与实践路径
15
作者 李俊杰 任东景 《生态文明研究》 2026年第1期3-18,共16页
习近平生态文明思想为推进新时代兴边富民行动以及实现边疆地区高质量发展提供了基本遵循和行动指南。习近平生态文明思想引领新时代兴边富民行动的内在机理在于通过生态产品价值实现、产业生态化和生态产业化、发展新质生产力增强生态... 习近平生态文明思想为推进新时代兴边富民行动以及实现边疆地区高质量发展提供了基本遵循和行动指南。习近平生态文明思想引领新时代兴边富民行动的内在机理在于通过生态产品价值实现、产业生态化和生态产业化、发展新质生产力增强生态富民的内生动力;通过生态环境综合治理增加边境地区的生态韧性;通过生态文明建设凝聚边境各族群众生态共识,铸牢中华民族共同体意识;通过系统管控国内外生态安全风险确保边防稳固,维护国家总体安全。在推进边疆地区高质量发展的关键时期,应积极应对边境地区生态保护与经济发展之间的矛盾、科技创新能力不足、跨境环境保护合作机制不完善、生态文明建设相关科学评价指标体系亟须构建等现实困境,在党的全面领导下深化边境地区生态文明体制改革,加大绿色技术投入力度,推动边境地区生态完整性发展,优化完善跨境生态保护合作机制,着力构建边境生态文明建设多元主体评价指标体系,加快推进新时代兴边富民行动。 展开更多
关键词 习近平生态文明思想 兴边富民行动 边疆地区高质量发展
在线阅读 下载PDF
城市边缘区的时空演变识别与空间治理对策研究——以宁滁省际毗邻区为例
16
作者 徐建刚 李紫恒 《城市建筑》 2026年第3期81-84,共4页
城市边缘地区是连接城市建设区和农村腹地的纽带,是城市化最敏感的地区。省际毗邻区中城市边缘区的时空演变特征识别对城乡对比及社会、经济、生态演变研究具有重要意义。利用K-means聚类算法,使用NPP-VIIRS-like夜间灯光(NTL)数据,以... 城市边缘地区是连接城市建设区和农村腹地的纽带,是城市化最敏感的地区。省际毗邻区中城市边缘区的时空演变特征识别对城乡对比及社会、经济、生态演变研究具有重要意义。利用K-means聚类算法,使用NPP-VIIRS-like夜间灯光(NTL)数据,以宁滁省际毗邻区为例,对其城市边缘地区进行识别划分。研究结果表明,夜间光照强度和光照波动的组合指数识别城市边缘区更加精确。省际毗邻区中城市边缘区面积由2010年的353 km^(2)提升至2020年的699 km^(2),呈现环城市区域扩张及两省交界处扩张共存的特征。为识别城市边缘区提供了一种更加准确、客观的方法。 展开更多
关键词 城市边缘区 省际毗邻区 夜间灯光 时空演变
在线阅读 下载PDF
都市圈一体化背景下城市间跨界合作的生成机制与治理创新
17
作者 杨丽丽 《陕西行政学院学报》 2026年第1期25-30,共6页
中国城镇化已进入以都市圈和城市群为主导的新发展阶段,空间结构呈现出显著的多中心、网络化特征。行政边界重构、要素流动需求与制度创新共同形成了跨界合作的内生动力机制;当前中国都市圈跨界合作主要表现为政策协同、资源共享、技术... 中国城镇化已进入以都市圈和城市群为主导的新发展阶段,空间结构呈现出显著的多中心、网络化特征。行政边界重构、要素流动需求与制度创新共同形成了跨界合作的内生动力机制;当前中国都市圈跨界合作主要表现为政策协同、资源共享、技术交流与联合项目四种实践模式,各模式具有差异化特征。可以从制度创新、空间治理和实施保障三个维度优化都市圈治理体系,具体包括建立多层次协调机制、完善利益分配制度、强化数字治理能力等举措,以促进区域协同发展与治理能力提升。 展开更多
关键词 都市圈 都市圈一体化 城市化 跨界合作
在线阅读 下载PDF
粤港澳大湾区跨境商品采信认证体系探究
18
作者 董强 陈元辉 +4 位作者 金东凯 唐彦熙 林朝琦 梁丞 张桓玮 《质量安全与检验检测》 2026年第1期83-87,共5页
本文系统分析粤港澳大湾区跨境商品认证体系面临的风险与挑战,提出海关助力湾区跨境商品采信认证与合规建设的路径,以提升湾区经济融合发展水平。研究聚焦粤港澳三地认证协同机制,运用实证分析方法,剖析现有认证体系的运行效能,发现存... 本文系统分析粤港澳大湾区跨境商品认证体系面临的风险与挑战,提出海关助力湾区跨境商品采信认证与合规建设的路径,以提升湾区经济融合发展水平。研究聚焦粤港澳三地认证协同机制,运用实证分析方法,剖析现有认证体系的运行效能,发现存在检验规程与产业发展需求结构性偏差、海关监管滞后于跨境贸易新业态发展、三地认证标准体系缺乏统一框架等问题。基于此,应创新海关监管模式,推行“四位一体”改革举措,包括转变监管思路、统一检测口径、优化认证流程、完善合规能力建设,并加强第三方检测机构的检验能力与采信效力。研究表明,通过制度创新与技术赋能的双向协同,可实现认证资源优化配置,落实“一次认证,三地通行”的制度保障,为全球跨境商品采信认证体系建设提供借鉴。 展开更多
关键词 粤港澳大湾区 跨境商品采信认证 海关商品检验
在线阅读 下载PDF
晋冀蒙交界地区流动重力变化的小波分解
19
作者 王泽源 罗翔飞 +5 位作者 谢汝一 冯建林 何辛 姬计法 郝鹏飞 刘冬阳 《地震研究》 北大核心 2026年第2期207-213,共7页
搜集整理了2019—2022年晋冀蒙交界地区的4期流动重力观测资料,对其进行经典平差处理,并分析了重力场差分和累积动态变化特征。利用小波多尺度分解方法对重力变化进行分解,获得了1~4阶小波细节场,通过对数功率谱分析法估计了其近似场源... 搜集整理了2019—2022年晋冀蒙交界地区的4期流动重力观测资料,对其进行经典平差处理,并分析了重力场差分和累积动态变化特征。利用小波多尺度分解方法对重力变化进行分解,获得了1~4阶小波细节场,通过对数功率谱分析法估计了其近似场源深度,并讨论了2022年平山M_(S)4.3地震的震前重力异常变化。结果表明:①平山M_(S)4.3地震前,震中及周边地区正重力变化持续累积,地震发生在重力上升变化过程中,震中位于重力变化梯度带;②3阶和4阶小波细节显示,研究区重力变化可能反映了中、下地壳物质迁移过程。2022年平山M_(S)4.3地震震中位于重力场变化正负梯度带或正、负重力异常交替出现的四象限中心部位,且震源深度与3阶小波细节反映的场源深度较一致,这可能反映了震前重力场异常变化特征;③利用小波分解对重力变化数据进行异常场源分离提取和分析,能够清晰地揭示重力场异常变化与地震的关系,对发震地点的预测有一定指示意义。 展开更多
关键词 流动重力 小波多尺度分解 平山M_(S)4.3地震 晋冀蒙交界地区
在线阅读 下载PDF
和亲在中华民族共同体形成与发展中的作用
20
作者 崔明德 《湖北民族大学学报(哲学社会科学版)》 北大核心 2026年第1期1-11,共11页
和亲作为中国古代处理民族关系的重要政治实践,是各民族交往交流交融的典型形态,在中华民族共同体的历史演进、巩固与发展中扮演了不可或缺的角色。其历史作用主要体现在三个层面:首先,和亲是古代罢战言和、消弭冲突的主要策略。其通过... 和亲作为中国古代处理民族关系的重要政治实践,是各民族交往交流交融的典型形态,在中华民族共同体的历史演进、巩固与发展中扮演了不可或缺的角色。其历史作用主要体现在三个层面:首先,和亲是古代罢战言和、消弭冲突的主要策略。其通过王朝与少数民族政权上层间的政治联姻,将军事对抗转化为战略妥协。和亲双方统治者作出的止战承诺、和亲公主及其使团所承担的调解斡旋职能,有效弥合了政权间的分歧,为双边关系由冲突走向和平创造了制度与情感基础,进而推动形成相对稳定、和睦共处的政治局面。其次,和亲奠定了民族融合的血缘与社会基础。联姻不仅建立起“甥舅之亲”的拟制血缘纽带,更伴随大规模的人员流动、文化传播与经济交往。这一过程深刻促进了不同民族在生活习俗、社会制度与心理认同层面的交融,强化了“华夷一体”或“天下一家”的共同意识,从社会结构上巩固了中华一体格局的内在联系。最后,和亲构筑了维护国家统一与边疆安全的战略协同体系。藉由姻亲关系,中央王朝与边疆政权间建立起更高层级的政治互信与军事同盟。双方通过在防务上的相互支援、共同平定内乱、抵御外部威胁等一系列合作,形成了维护疆域完整与国家稳定的协同力量。这一由政治认同与战略合作所构筑的防御体系,凸显了其在国家治理体系中超越有形边墙的深层价值。 展开更多
关键词 古代和亲 中华民族共同体 各民族交往交流交融 铸牢中华民族共同体意识 边疆治理
在线阅读 下载PDF
上一页 1 2 131 下一页 到第
使用帮助 返回顶部