当代全球化背景下的边界和边界景观①     

Jussi P. LAINE 《地理科学进展》2017,36(12):1531-1539

随着社会的变化,相关研究的范式往往也会发生改变。本文对边界研究中概念的变化作出了解释。在边界仍然具有重要作用的今天,我们需要重新审视这些概念在不断变化的历史、政治和社会背景下体现出来的时空变化性和不确定性。本文强调了边界不仅是国家主权的分界线,还具有从地缘政治,到边界和跨边界的社会实践和文化生产的多层次复杂性。本文力求对边界研究中的相关争论作出建设性贡献,以促进对边界的过程化、去领域、分散性的本质,及其在全球化和跨国流动时期保证政权的作用的充分理解,展现边界研究作为一个跨学科的领域,仍具有自身内涵的学术地位。本文以边界景观的概念为核心组织元素,提倡在边界研究中采取相关的研究方法,从互补的视角考虑政治愿景与日常社会文化实践之间、社会表现和艺术想象之间的相互作用。  相似文献   

Three-dimensional reconstruction of carbon accumulation and CH4 emission during nine millennia in a raised mire     

ATTE KORHOLA  JUKKA ALM  KIMMO TOLONEN  JUKKA TURUNEN  H GNE JUNGNER 《第四纪科学杂志》1996,11(2):161-165

A three-dimensional model, based on numerous vertical and horizontal ¹⁴C datings and GIS simulation from a concentrically domed mire in southern Finland, demonstrates considerable variation in actual (net) rate of carbon accumulation (ARCA) through time. Lateral growth between 9000 and 3000 yr ago accounts for only 25% of the total carbon sequestration, whereas bog formation after ombrotrophication is responsible for the remaining 75%. On the other hand, the most rapid increase in landscape CH₄ flux occurred between 4500 and 3000 yr ago, the period of the fastest horizontal growth. In addition to autecological factors, a climatic shift towards cooler and wetter conditions is a plausible mechanism for maintaining accelerated carbon accumulation.  相似文献   

Estimation of surface albedo from NOAA AVHRR data in high latitudes     

VESA LAINE  MARTTI HEIKINHEIMO 《地球，A辑:动力气象学与海洋学》1996,48(3):424-441

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