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1.
Over the past two decades, northern Thailand has experienced a massive influx of Shan ethnic nationals from Myanmar migrating to escape economic hardship and political conflicts at home. Myanmar's recent reforms raise the question of whether these migrants will return. The paper brings together the context of current changes in Myanmar with migrants' prospects of return and the impact of large‐scale migration on homeland politics. On the one hand, the paper explores the possibility that Shan migrants could remain forever transnational, for many of them will most likely never return. On the other hand, it considers the perspective of Shan elites in Myanmar on the fact a large portion of young Shan now spend their adult lives living and working in Thailand. While out‐migration of young Shan threatens the social fabric of Shan community in Myanmar, Shan ethnonationalists strive across the Myanmar border to regain loyalty among the Shan migrant population in Thailand. By examining the two aspects, this paper attempts to shed light on the impact of transnational migration on both migrants and their home country.  相似文献   

2.
Schmidt‐hammer exposure‐age dating (SHD) was applied to three flood berms in upper Vetlestølsdalen, southern Norway, using a local, high‐precision calibration curve that takes account of the colluvial origin of fluvial boulders in the youngest berm, which was deposited during the August 1979 flood. Precision of SHD dating for this berm was estimated as ±210 years, whereas predicted ages of the two older berms were 3195 ± 435 and 3405 ± 340 years, and subsections of the oldest berm yielded age ranges of ～900 years. The results demonstrate the feasibility of high‐precision SHD in the context of boulder landforms deposited by high‐magnitude floods, the requirement of a large sample of R values in the face of high natural variability, the necessity of an appropriate calibration curve to ensure accuracy, the usefulness of floods of known age for testing and improving calibration curves, and the potential effects of boulders of colluvial origin on R values (especially the susceptibility of young surfaces to roughness variations). The dated berms indicate a return period of ～1000–1500 years for floods of the magnitude of the 1979 flood event in the upper catchment. Thus, the long‐term persistence of flood boulder berms in the landscape has potential for reconstructing Holocene flood history and palaeohydrology from the geomorphic legacy of the most extreme Holocene floods.  相似文献   

3.
The postdisaster landscape is replete with memorials that help communities collectively remember destructive events and recover psychologically. Although commemoration is intrinsic to all stages of recovery, little research from the disaster‐science field engages memorial texts across disasters. Meanwhile, a rich body of work on memorials and their functions exists in the cultural geographic tradition. Drawing from this literature, the current study examines a sample of U.S.‐based memorials to discern patterns within the postdisaster commemorative landscape. This research leverages discourse analysis to interrogate the meanings and mechanics of postdisaster memory work. Findings revealing that disasters catalyze remembrances that remake places, postdisaster memorial texts construct wide‐ranging degrees of intimacy, and memorials distilling survivor memories impel community recovery differently than memorials that reconstruct imagined pasts. These identified patterns in postdisaster commemoration enable further systematic exploration of memory work in the long‐term recovery process.  相似文献   

4.
卓云霞  刘涛 《地理研究》2022,41(5):1262-1278
作为一个多阶段的空间行为决策过程,人口迁移是城镇化和区域发展研究的核心议题;但现有研究普遍存在重意愿轻行为、重状态轻过程以及较少关注再迁移行为等不足。本文构建了迁移者居留、返乡和再迁移三元选择行为的分析框架,并利用具有全国代表性的调查数据,采用事件史分析法开展了实证研究。结果发现：迁移者普遍会经历三年左右的不稳定期,而后进入稳定居留状态。迁移者的居留、返乡与再迁移行为存在空间分异：省际迁移者较省内迁移者更倾向于再迁移;迁入地规模等级越高,迁移者居留的比例越低。重要生命事件会显著影响人们的迁移行为：婚姻会让迁移者更偏好在特定迁入地稳定居留;毕业就职是人们重新选择居住地的重要时机,而失业这一负面冲击则很可能促使迁移者返回家乡。迁入地经济增长放缓、迁出地经济发展水平提高、两地间文化环境差异较大等因素都会导致更多迁移者选择返乡;但区域发展和地域联系对高学历、低学历迁移者和省际、省内迁移者的影响存在明显异质性。研究结果证实了在人口迁移决策研究中关注实际迁移行为、引入动态过程视角并统筹考虑居留返乡和再迁移三元选择的重要意义。  相似文献   

5.
劳动力回流的驱动因素与就业行为研究进展   总被引：7，自引：4，他引：3  
殷江滨 《地理科学进展》2015,34(9):1084-1095
全球化与经济一体化的深入促使劳动力的空间流动更为频繁,并呈现外出与回流并存的格局。作为发展中人口大国,中国的劳动力回流现象不断增多,流动“双向化”趋势日趋明显。本文从劳动力回流理论、回流动因、回流者的就业行为与影响机制入手,对国内外已有文献进行梳理分析,发现在回流理论中,主张成功/失败的经济理论长期占据主导地位,但这一分析范式开始受到社会学理论的挑战。回流决策不仅受外出者自身经济因素所驱使,而是在社会联系、地方经济政策环境等因素的综合影响下产生的。回流劳动力并不是简单的经济上的“失败者”,他们通过物质资本和人力资本积累,表现出更强的就业能力,通过自主创业等活动,促进了家庭收入的增加和家乡经济多元化。但由于制度环境及经济发展特点的差异,中国国内劳动力回流的动因与就业行为具有自身特点。最后,从回流理论、回流的空间效应及新生代农民工回流等方面对中国未来的回流研究进行了展望。  相似文献   

6.
谢永飞  梁波  林莉华 《热带地理》2022,42(8):1288-1300
基于个体心理决策视角,使用定量研究与定性研究相结合的方法,分析流出地的“家”和“业”对青年农民工回流意愿的影响过程。研究发现：文化意义上的“家”是影响青年农民工回流意愿的深层因素,但其影响还需要“业”的强化。流出地的“家”和“业”共同作用,形塑青年农民工的回流意愿。“家”的文化观念通过新的人生节点、具有挑战性的家庭责任和规划中的家庭发展触发青年农民工回流;“业”的想象则通过选择新的就业地点、渴望好的就业条件、寻找独特的创业资源和改变旧的发展路径增强青年农民工回流意愿,由此实现回流决策中的“家”“业”兼得。在中国区域发展不平衡、不充分的情况下,流出地政府既要大力发展经济、增加就业机会、提升收入水平,又要加大对回流的青年农民工的创业扶持,使他们的“业”得到持续强化,“家”“业”可以持续兼得。在对农民工群体进行研究时,可以把“家”作为一个关键的切入点,从“家”出发构建中国话语的分析框架,这蕴含了创建中国本土人口流动理论的可能性。  相似文献   

7.
Previous work related to central‐Auckland site Albert Park showed that sparse site histories for inner‐city weather stations can be usefully supplemented by mining searchable online historical archives (Papers Past, DigitalNZ), at least as far back as 1909. Assessment of potential is extended here back to 1853, within the context of developing a long‐term rainfall record for Auckland. Although late 19th century sources are thinner and of poorer quality, much useful information could be gleaned about the locations and exposures of early sites. Hypothesised implications for the rainfall record suggest that all early site data need to be adjusted upwards.  相似文献   

8.
以产业转移和劳动力回流为主要特征的“双转移”是当前中国经济进入中速增长背景下一个新的发展趋势,是市场机制下产业和劳动力的理性选择。在此背景下,以河南周口市为案例地,通过实地调研和问卷访谈,分析了传统农区外出劳动力空间流向和回流意愿,重点对外出劳动力的回流动力、行为选择进行了调查分析,并从政府和制度层面提出回流地的规划响应。结果表明:①周口市外出劳动力回流意愿强烈,且有近期返乡的打算;②外出劳动力的回流动力呈现多元化,县城是除本村外回流劳动力居住和生活的重要空间选择;③就业机会、教育和医疗水平是外出劳动力回流最为关注的城镇吸引要素。最后,从地方政府和制度层面提出放权强县、促进“双转移”良性循环互动、公共服务设施均等化配置和推进土地户籍制度改革的规划响应措施。  相似文献   

9.
殷江滨  李郇 《热带地理》2012,32(2):128-133,140
改革开放以来,中国大规模的人口流动对资源的优化配置和经济快速发展产生了深远的影响.然而,中国的农村劳动力流动正逐渐从单向转变为城乡双向流动的格局,这一变化无疑将深刻影响我国农村地区的发展前景.文中采用对广东省云浮市农户的调查数据,通过构建Logistic模型,从农村外出劳动力个体行为决策的视角探讨农村劳动力回流的影响因素.实证研究表明:人力资本较低,年龄偏大,家庭儿童数量较多、老人数量较少和已婚的外出劳动力回流的可能性较大;而外出务工时间对回流概率的影响呈倒U型分布;家乡的非农就业机会与村庄的区位因素也显  相似文献   

10.
This article is a long‐term retrospective study of the reconstruction that followed the 1931 earthquake that struck the city of Napier in Hawke's Bay, New Zealand. It particularly focuses on the positive outcomes in reducing the risk of future disaster at both local and national levels. These were facilitated by three key decisions and strategies: (i) reconstruction was initiated immediately after the disaster; (ii) it was designed as a balance between continuity and change; and (iii) it relied on a decentralised, integrative decision‐making process.  相似文献   

11.
刘云刚  燕婷婷 《地理研究》2013,32(7):1280-1290
改革开放30 多年来,沿海大都市和内陆地方城市之间的发展差距不断拉大,其中人口流动是重要动因。因此,如何吸引人口回流,留住本地人才,是内陆地方城市未来发展的关键。在此背景下,以驻马店为案例地,通过实地调研和问卷访谈,探讨了在深圳市的驻马店籍人口的回流意愿,以及当前驻马店的人口回流状况,并重点对回流创业者与回流购房者的回流动因、地域选择、就业动向及预期等进行了调查分析。研究表明,以驻马店为代表的地方城市已出现了以U-turn 与I-turn 为主的人口回流现象,且回流人口大都从事或打算从事与之前就业行业相关的创业活动。已发现有两种主动回流类型,即创业回流和购房回流。其中,购房回流也可看作是创业回流的前奏,二者可理解为同一回流过程的两个阶段。如果地方政府能够做出积极的政策引导,回流人口及其带动的返乡经济可望成为地方城市摆脱发展困境的一个新战略。  相似文献   

12.
Debris flows and debris floods cause frequent geomorphic hazards, even in the mid‐mountains of Central Europe. In the Hrubý Jeseník Mountains (Eastern Sudetes, Czech Republic), strong anthropogenic interventions have created specific conditions for erosion, transport and accumulation of material released by debris flow/flood events. We present a detailed spatio‐temporal reconstruction of the hydro‐geomorphic process activity in two adjacent sub‐catchments using dendrogeomorphic methods applied to the steep, narrow channels. An analysis of 172 sampled trees [Picea Abies (L.) Karst.] revealed 14 torrential events since 1943 in the Klepá?ský stream sub‐catchment and 11 events since 1897 in the Keprnický stream sub‐catchment. Identical events were identified in 1965, 1991, 1997, 2002 and 2010. The event return periods were comparable with return periods from the foothills of the European Alps. A higher frequency of events in the first sub‐catchment may be caused by the presence of a deep‐seated landslide, steeper slopes and a higher susceptibility to shallow slope deformations. Different spatial patterns of events were presented using the Kernel Density analysis in ArcMap 10.1. Clusters of affected trees in the valley floor during the last decades may be due to increased erosion below the check dams and increased accumulation above. The presence of check dams and slope stabilization works since the 1960s has mitigated the processes in several gullies, but due to the current non‐interventional management, the risk of their damage is increasing, particularly when increased activity is observed in the adjacent unprotected gullies.  相似文献   

13.
The Miocene sedimentary succession of the southern Browse Basin records the response of a tropical reef system to long‐term, strong subsidence on a passive continental margin. Geological interpretation of a comprehensive two‐dimensional (2D) seismic reflectivity data set documents for the first time the development of a continuous Miocene barrier reef on the Australian North West Shelf. With a length of over 250 km, this barrier reef is among the Earth's largest in the Neogene record. A sequence stratigraphic analysis tied to well data shows that the main controls for the evolution, growth and demise of the reef system were subsidence, third‐order global‐scale eustatic variations and antecedent topography. The generally very high Miocene subsidence rates estimated for the study area cannot be explained by typical passive‐margin subsidence controlled by lithospheric cooling and sedimentary loading alone. Additional dynamic subsidence induced by mantle convection, though documented as unusually large on the northern margin of Australia during the Neogene, can be also regarded as being of only minor importance. Therefore, accelerated tectonic subsidence related to the collision of the Australian and Eurasian Plates 250–500 km north of the study area seems to exert an important influence on reef development and demise, complicated by local tectonic inversion. The Miocene tectonic reactivation and inversion of an older structural grain is interpreted to have controlled the reef development considerably by providing localized topographic highs along transpressional anticlines above basement‐rooted faults that served as preferential sites for reef growth and retreat during times of rapidly rising sea level. This exemplarily shows that the far‐field effects of collision‐induced tectonic subsidence can significantly influence carbonate systems on passive margins.  相似文献   

14.
The study of source‐to‐sink systems relates long‐term variations in sediment flux to morphogenic evolution of erosional–depositional systems. These variations are caused by an intricate combination of autogenic and allogenic forcing mechanisms that operate on multiple time scales – from individual transport events to large‐scale filling of basins. In order to achieve a better understanding of how these mechanisms influence morphological characteristics on different scales, 29 submodern source‐to‐sink systems have been investigated. The study is based on measurements of morphological parameters from catchments, shelves and slopes derived from a ∼1 km global digital elevation model dataset, in combination with data on basin floor fans, sediment supply, water discharge and deposition rates derived from published literature. By comparing various morphological and sedimentological parameters within and between individual systems, a number of relationships governing system evolution and behaviour are identified. The results suggest that the amount of low‐gradient floodplain area and river channel gradient are good indicators for catchment storage potential. Catchment area and river channel length is also related to shelf area and shelf width, respectively. Similarly to the floodplain area, these parameters are important for long‐term storage of sediment on the shelf platform. Additionally, the basin floor fan area is correlative to the long‐term deposition rate and the slope length. The slope length thus proves to be a useful parameter linking proximal and distal segments in source‐to‐sink systems. The relationships observed in this study provide insight into segment scale development of source‐to‐sink systems, and an understanding of these relationships in modern systems may result in improved knowledge on internal and external development of source‐to‐sink systems over geological time scales. They also allow for the development of a set of semi‐quantitative guidelines that can be used to predict similar relationships in other systems where data from individual system segments are missing or lacking.  相似文献   

15.
The distinctive black‐and‐white houses from Singapore's colonial era that survive in enclaves as fine dwellings for the present‐day elite have been recognized and documented as a type. In this paper we tell the story of their cultural formation, which is one of remarkable hybridity. Various influences were brought to bear and resolved into the black‐and‐white house‐type, which was not invented ‘all at once’ in Singapore, but developed over the course of more than two centuries. We begin the story in India, when British settlers learnt from local Bengali practices to make serviceable dwellings for a climate that they found difficult. The overhanging roofs that shaded walls and the tall internal volumes were formalized with reference to European expectations of geometry and finish, and the bungalow was born. In British Malaya the bungalow was further hybridized with the house on stilts that was well known to the indigenous tradition. This produced the spatial configuration that is to be found also in the Singapore houses, with their extensive verandas on an upper floor level. Their distinctive colouring comes from a different tradition: the black‐and‐white Tudoresque style that was very popular in Britain and sometimes called ‘Old English’. This was used by the British colonizers so that they could feel more at home in surroundings that were in a far‐off foreign cultural environment.  相似文献   

16.
Population loss persists in nonmetropolitan America, especially in isolated counties with limited natural amenities. Communities in these counties experience high levels of outmigration among high school graduates, but low in-migration is more important in distinguishing declining from growing nonmetropolitan counties, and return migration is a much more prominent component of in-migration to these locationally disadvantaged areas. This research uses a multisited, interview-based methodology to understand the factors that influence decisions of people in their late twenties to late forties to move back to rural communities and the barriers that keep others from making such moves. The life course segment considered here captures a critical “settling down” period when career and family obligations overlap and return migration peaks. Interviews at high school reunions, the only venues where stayers, return migrants, and nonreturn migrants are found together, show that limited rural employment opportunities are barriers for nonreturnees. Others intent on returning find ways to secure or create employment but are primarily influenced to move home by family concerns. Connections to the larger social and physical environment of the community are important as well. Interviews affirm that factors affecting migration decisions work in combination, and ties to both people and place are critical for understanding rural return migration.  相似文献   

17.
Ethno‐territoriality is an increasingly invoked term by those doing research on nationalism and ethnic conflict. Despite this, it has not been subject to detailed definitional and conceptual examination. This article develops a conceptual framework for thinking about ethno‐territoriality and ethnic conflict. It begins by briefly describing the relationship between territoriality, state sovereignty, and nationalist politics. I then provide a definition of ethno‐territoriality and outline a four‐part typology of the key elements of ethno‐territorial practice. Following this I discuss the role that ethno‐territoriality plays in the making of ethnic conflict.  相似文献   

18.
人口回流正成为中国人口流动的重要趋势,并将深刻影响中西部及沿海地区的发展前景。本文从地理学的“距离”视角切入,在传统人口迁移理论的基础上,将两个非经济因素的距离维度,即制度距离和文化距离引入人口回流研究,构建了多维距离影响流动人口回流意愿的理论框架,并运用全国层面的流动人口调查数据进行实证分析。结果发现：与理论预测一致,流入地与户籍地间的多维距离对流动人口的回流意愿具有显著的影响。经济距离抑制了流动人口的回流,而地理距离、制度距离和文化距离均对人口回流产生促进作用。在考虑了解释变量可能存在的测量误差后,这一发现依然稳健。此外,多维距离对回流意愿的影响因流动人口个体及所在城市特征的差异而不同。个体异质性方面,随着流动人口年龄的增长和文化水平的提高,经济距离对回流意愿的影响不断增强,而地理距离的影响则逐渐减弱。城市异质性方面,随着城市人口规模的增加,制度距离对回流意愿的促进作用不断减弱;城市经济水平的提高则弱化了地理距离对回流意愿的正向效应。  相似文献   

19.
Adaptation is a key concept in long‐term human adjustments to climate change. Despite the centrality of human decisions and actions in adaptation, much of the climate change literature is thin on humanities and social science which are the primary approaches for understanding human activity. This situation is particularly pronounced in Louisiana's discussions about its disappearing coast line where research has concentrated in understanding biophysical processes and solutions prioritize short‐term adaptations. This paper reviews the relationship of adaptation and long‐term transitions in the global change discussion and traces how disjointed adaptations in coastal Louisiana have contributed to a perilous environmental situation there. It proposes a shift from discrete adaptations to efforts that incorporate interrelated biophysical and human adaptations that can sustain long‐term transitions.  相似文献   

20.
Determining both short‐ and long‐term sedimentation rates is becoming increasingly important in geomorphic (exhumation and sediment flux), structural (subsidence/flexure) and natural resource (predictive modelling) studies. Determining sedimentation rates for ancient sedimentary sequences is often hampered by poor understanding of stratigraphic architecture, long‐term variability in large‐scale sediment dispersal patterns and inconsistent availability of absolute age data. Uranium–Lead (U‐Pb) detrital zircon (DZ) geochronology is not only a popular method to determine the provenance of siliciclastic sedimentary rocks but also helps delimit the age of sedimentary sequences, especially in basins associated with protracted volcanism. This study assesses the reliability of U‐Pb DZ ages as proxies for depositional ages of Upper Cretaceous strata in the Magallanes‐Austral retroarc foreland basin of Patagonia. Progressive younging of maximum depositional ages (MDAs) calculated from young zircon populations in the Upper Cretaceous Dorotea Formation suggests that the MDAs are potential proxies for absolute age, and constrain the age of the Dorotea Formation to be ca. 82–69 Ma. Even if the MDAs do not truly represent ages of contemporaneous volcanic eruptions in the arc, they may still indicate progressive‐but‐lagged delivery of increasingly younger volcanogenic zircon to the basin. In this case, MDAs may still be a means to determine long‐term (≥1–2 Myr) average sedimentation rates. Burial history models built using the MDAs reveal high aggradation rates during an initial, deep‐marine phase of the basin. As the basin shoaled to shelfal depths, aggradation rates decreased significantly and were outpaced by progradation of the deposystem. This transition is likely linked to eastward propagation of the Magallanes fold‐thrust belt during Campanian‐Maastrichtian time, and demonstrates the influence of predecessor basin history on foreland basin dynamics.  相似文献   

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