阿伯克隆比与英国早期区域规划     

谢鹏飞 《中国勘察设计》2011,(5):75-78

论文介绍了英国区域规划先行者阿伯克隆比的生平及主要学术思想和实践,对英国早期区域规划"伦敦郡规划"、"大伦敦规划"进行了总结梳理,提出"大伦敦规划"的缺陷,并提出英国新城思想和区域规划理论受到了中国传统哲学思想(风水地理学)的影响。  相似文献   

Exceptional fidelity of preservation in a reworked fossil,Chalk drift,South London,England     

Stephen K. Donovan  Fiona E. Fearnhead 《Geological Journal》2015,50(1):104-106

Reworking of fossils commonly leads to loss of morphological detail and inferior preservation; the main contributions of such specimens to geology are in sedimentology, regional geology and neoichnology. A reworked specimen of the Late Cretaceous (chalk) sponge boring Entobia cretacea Portlock is unusually well preserved. This specimen is from superficial deposits and is well enough preserved that delicate apertural and intercameral canals are apparent. Two factors are recognized as important in maintaining the fine features of this trace fossil: preservation in flint and, presumably, minimal fluvial transport. Copyright © 2013 John Wiley & Sons, Ltd.  相似文献   

Bearing the burden of boat harbours: heavy contaminant and fouling loads in a native habitat-forming alga     

Johnston EL  Marzinelli EM  Wood CA  Speranza D  Bishop JD 《Marine pollution bulletin》2011,62(10):2137-2144

Boat harbours are an increasingly common form of artificial habitat. This paper presents a comparative study of contaminants and foulers of a habitat-forming native kelp (Saccharina latissima) in four marinas and four reference locations along the south-west coast of the UK. Fouling of algal laminae was light (<2% cover) in reference locations, while epibiota cover ranged from 25% to 80% of laminae in marinas. Metals associated with antifouling paints were up to six times more concentrated in algal tissues from marinas than from the reference locations. Marinas also carried the greatest cover and diversity of non-indigenous epibiota on the kelp laminae. This indicates not only a potential stress to kelps in these environments, but also the possibility that detached laminae will act as vectors for the dispersal of non-indigenous species. The development of boat harbours creates habitats that are high risk source localities for pollution-tolerant fouling organisms.  相似文献   

Using palm‐mat geotextiles on an arable soil for water erosion control in the UK     

R. Bhattacharyya  M.A. Fullen  C.A. Booth 《地球表面变化过程与地形》2011,36(7):933-945

To date, most studies of the effectiveness of geotextiles on soil erosion rates and processes have been conducted in laboratory experiments for less than 1 h. Hence, at Hilton (52°33′ N, 2°19′ W), UK, the effectiveness of employing palm‐mat geotextiles for soil erosion control under field conditions on arable loamy sands was investigated. Geotextile‐mats constructed from Borassus aethiopum (Borassus palm of West Africa) and Mauritia flexuosa (Buriti palm of South America) leaves are termed Borassus mats and Buriti mats, respectively. Duplicate runoff plots (10 m × 1 m on a 15° slope) had five treatments (bare, permanent grass, Borassus total plot cover, Borassus buffer strip and Buriti buffer strip). Borassus covered plots had about 72% ground cover and to differentiate between this treatment and Borassus buffer strips, the former treatment is termed Borassus completely‐covered. Runoff and eroded soil were collected from each bounded plot in a concrete gutter, leading to a receptacle. Results from 08/01/2007–23/01/2009 (total precipitation = 1776·5 mm; n = 53 time intervals) show that using Borassus buffer strips (area coverage ～10%) on bare soil decreased runoff volume by about 71% (P > 0·05) and soil erosion by 92% (P < 0·001). Bare plots had nearly 29·1 L m^?2 runoff and 2·36 kg m^?2 soil erosion during that period. Borassus buffer strip, Buriti buffer strip and Borassus completely‐covered plots had similar effects in decreasing runoff volume and soil erosion. Runoff volumes largely explain the variability in soil erosion rates. Although buffer strips of Borassus mats were as effective as whole plot cover of the same mats, the longevity of Borassus mats was nearly twice that of Buriti mats. Thus, use of Borassus mats as buffer strips on bare plots is highly effective for soil erosion control. The mechanisms explaining the effectiveness of buffer strips require further studies under varied pedo‐climatic conditions. Copyright © 2011 John Wiley & Sons, Ltd.  相似文献   

Impacts of maintenance dredged material disposal on macrobenthic structure and secondary productivity     

Bolam SG  Barry J  Bolam T  Mason C  Rumney HS  Thain JE  Law RJ 《Marine pollution bulletin》2011,62(10):2230-2245

The results of a monitoring programme to assess the spatial impacts associated with ongoing dredged material disposal activity at a dispersive, coastal disposal site (southwest UK) are described. Benthic impacts were assessed using benthic community structure and secondary productivity estimates.Analyses of univariate indices (including secondary production) and multivariate community structure revealed differences between stations inside and those outside the disposal site were minimal. Generally, stations within and outside the disposal site were characterised by the same species. Regression models indicated that the variability in biological structure and secondary production was predominantly accounted for by natural variables (e.g., depth, sediment granulometry) with only a small amount of residual variability being due to contaminant variables. Thus, the elevated levels of certain contaminants in the vicinity of the disposal area were not sufficient to result in significant ecological or ecotoxicological changes. We ascribe such findings partly to the dispersive nature of the disposal site.  相似文献   

EU marine strategy framework directive (MSFD) and marine spatial planning (MSP): Which is the more dominant and practicable contributor to maritime policy in the UK?     

《Marine Policy》2014

This paper is a comparative analysis of the contribution to UK marine governance of two recent EU initiatives: the Marine Strategy Framework Directive (MSFD) and Marine Spatial Planning (MSP). MSFD imposed a duty on Member States to achieve Good Environmental Status (GES) in four regional seas, while MSP required Member States to replace their fragmented, sector-based system of maritime decision making with an integrated approach. This paper explains MSFD and MSP, examines their relationship, and compares their practicability, concluding that MSP is both the more dominant and the more practicable instrument, reflecting the UK's preference for sustainable development over conservationism in marine policy. A recent proposal by the European Commission to make MSP and integrated coastal management a Directive reinforces the UK position.  相似文献   

Universal inverse power-law distribution for temperature and rainfall in the UK region     

《Dynamics of Atmospheres and Oceans》2014

Meteorological parameters, such as temperature, rainfall, pressure, etc., exhibit selfsimilar space–time fractal fluctuations generic to dynamical systems in nature such as fluid flows, spread of forest fires, earthquakes, etc. The power spectra of fractal fluctuations display inverse power-law form signifying long-range correlations. A general systems theory model predicts universal inverse power-law form incorporating the golden mean for the fractal fluctuations. The model predicted distribution was compared with observed distribution of fractal fluctuations of all size scales (small, large and extreme values) in the historic month-wise temperature (maximum and minimum) and total rainfall for the four stations Oxford, Armagh, Durham and Stornoway in the UK region, for data periods ranging from 92 years to 160 years. For each parameter, the two cumulative probability distributions, namely c_max and c_min starting from respectively maximum and minimum data value were used. The results of the study show that (i) temperature distributions (maximum and minimum) follow model predicted distribution except for Stornowy, minimum temperature c_min. (ii) Rainfall distribution for c_min follow model predicted distribution for all the four stations. (iii) Rainfall distribution for c_max follows model predicted distribution for the two stations Armagh and Stornoway. The present study suggests that fractal fluctuations result from the superimposition of eddy continuum fluctuations.  相似文献   

The estimation of estuary dimensions using a simplified form model and the exogenous controls     

Ian Townend 《地球表面变化过程与地形》2012,37(15):1573-1583

The most common definition of an equilibrium condition for estuaries and inlets makes use of the well documented relationship between tidal prism and the cross‐sectional area of the channel. However, the tidal prism is itself a function of the morphology of the tidal basin. It would therefore be useful to be able to define the key dimensions of estuaries and inlets based on properties that are external to the estuary itself. This would then provide a more rigorous basis for understanding how systems are being ‘perturbed’ by developments, or other influences such as climate change. An idealized representation of the three–dimensional (3D) form of an estuary has been proposed and is here applied to a wide range of UK estuaries to explore its ability to predict the gross properties of a range of different estuary types. When considering just tidal flow, the model was found to provide an adequate representation, however, the inclusion of wave action was found to significantly improve the predictive power of the model. The exogenous parameters therefore provide a basis for determining the estuary dimensions and how they are likely to change over time. This in turn provokes a broader definition of an estuary than those commonly cited. Copyright © 2012 John Wiley & Sons, Ltd.  相似文献   

Knowing our own history? Geography department archives in the UK   总被引：1，自引：0，他引：1  

Ron Johnston  Charles W J Withers 《Area》2008,40(1):3-11

The paper presents an analysis of the returns to a questionnaire survey on the state of department archives within UK departments of geography. The results of the survey are discussed in relation to recent work in geography which has examined the archive as a site for knowledge's making but seldom in its own terms as a resource for the history of geography, and studies within the archival sciences which have considered the archive as something more than a 'storehouse' for collective memory. The paper reveals that the archival record for the history of British geography is at best uneven, and in many departments non-existent, although information on departmental history is held, often as memory, by individual geographers. The paper considers the survey's implications for the future histories of British geography and addresses the nature of the UK geography department archive as resource and responsibility.  相似文献   

老龄化社会中的地方和非正式照护①——地理老年学最新研究进展     

Christine MILLIGAN 《地理科学进展》2015,34(12):1558-1576

发达国家政策制定者和执行者正面临着一个重要问题,即如何照护身体衰弱的老年群体,以应对人均寿命延长给社会经济与福利带来的影响。当然寿命延长本身是人类取得的一个巨大成功。然而,预期寿命的增加也引发了老年人口尤其是高龄老人数量的增长,这些高龄老人面临疾病高发和工具性日常生活活动能力(Instrumental Activities of Daily Life, IADLs)下降的情况,而这种能力对保持他们晚年生活的独立和尊严非常重要。与此同时,政策和实践的重心已经从机构养老转为“就地养老”,即支持老年人尽可能长时间地住在自己家里。从概念上讲,这意味着之前由机构提供的服务和照护(care)将改为由家庭来提供,这样脆弱的老年人也可以得到来自家人、朋友和邻居的非正式照护。一方面,这意味着许多老年人能够享受到由家庭照护所带来的亲密感、安全感和情感支持;另一方面,家庭结构的变化,社区的衰落,以及经济紧缩时期保障和福利的大幅削减,造成越来越多的老年人要面对孤独、孤立及风险。于是,老年人的照护者、照护地点和照护方式,及老年人对这些因素的差异化体验,将成为对健康和老龄化研究感兴趣的地理学家越来越关心的问题。本文回顾了地理老年学对非正式照护和家庭研究的最新进展,指出该领域的工作对老年人口照护的多学科探讨具有重要贡献。  相似文献