关于避免中国交通建设过度超前的建议

这里发表的是经过2009-2010年间大量调查研究和分析写成的咨询报告全文（原文）。“报告”于2010年9月由有关部门上报到国家。“报告”对近年来交通建设成就和交通运输业发展已经达到的水平进行了概括性评价,集中而系统地揭示了近年来全国范围内交通运输建设中出现的过度扩张、重复建设、能力浪费、不合理竞争以及各种运输方式之间...     

论区域的最佳结构与最佳发展——提出“点—轴系统”和“T”型结构以来的回顾与再分析

通过阐述各种型式空间结构与发展之间的关系及如何通过区域的最佳组织使其达到最佳发展，从理论和实践的结合上论证了社会经济空间组织的客观过程和“点－轴系统”的形成，说明“点－轴系统”理论可以导致区域或国家的最佳发展，因而该系统是最有效的区域开发模式。根据对十多年来我国区域发展实践效果的分析，指出“T”型结构的战略对我国发展起到了巨大的作用。     

Review of the potential use of brown algal ecotoxicological assays in monitoring effluent discharge and pollution in southern Australia

The temperate near-shore reefs of southern Australasia possess diverse assemblages of brown algal macrophytes which underpin major grazing and detrital food chains in medium to high energy coastal habitats. These ‘kelp' communities are at risk from effluent discharge with documented decline of macrophyte stands in areas subject to outfall. Recent studies utilising reproductive endpoints of several Australian species in ecotoxicological assays have highlighted their sensitivity to pollution. Results indicate an acceptable degree of reproducibility for assays with variation in response between taxa presumably related to differing habitat requirements and potential for stress resulting from toxicant/pollution exposure. Species studied are drawn from the orders Laminariales and Fucales, with the latter in particular offering substantial scope for further investigation. The greatest diversity of fucoid algae is found in south-eastern Australia and closely related taxa occur in similar latitudes in both the southern and northern hemispheres. The broad distribution of taxa from both taxonomic groups enables ready comparison of assays from disparate locations and offers the potential for simple, routine toxicological testing and habitat monitoring across broad geographic ranges.     

人地关系与经济布局理论创新与突破：论吴传钧院士的地理学思想

吴传钧先生是中外著名的杰出地理学家,曾荣任两届（１９８８－１９９６）国际地理联合会副会长,现任中国地理学会理事长。在８０华诞之际,同时发表《人地关系与经济布局》、《现代经济地理学》和《中国经济地理》三部巨著,突出显现先生学术风采。先生的学术思想极其活跃,达到炉火纯青之境,不愧为当代中国地理学的大师。在复兴人文地理学中,先生发挥着关键性作用,建立了历史功勋。本文扼要地介绍先生的人地关系与经济布局的理论创新,以及在地理学,尤其是在人文地理学（涵经济地理学、农业地理学、土地利用学、资源综合考察、国土整治与国土规划）和国际地理学术交流领域的杰出贡献。     

Prior exposure to Cu contamination influences the outcome of toxicological testing of Fucus serratus embryos

Brown seaweeds are often employed in single species toxicity testing to study the association between the pollutant and the biota in contaminated marine habitats. We have used Fucus serratus (Phaeophyta) from one Cu resistant and one non-resistant population to evaluate the effect of prior exposure to metal pollution on toxicological endpoints. Analysis of comparative toxicity was conducted for embryo rhizoid elongation and adult relative growth rate (RGR). Algae that had previously been exposed to Cu expressed consistently lower levels of sensitivity to Cu than those that had no history of exposure to the pollutant. For both non-resistant and resistant populations rhizoid length was a more sensitive endpoint than adult RGR. While early life history stages of brown algae are generally regarded as being pollution-sensitive and inhibition of spore and embryo rhizoid elongation is frequently used as endpoints in bioassays, the test results may be affected by prior exposure of the parent algae to the pollutant. We conclude that the effect of prior exposure should be considered when comparing endpoints between studies and when selecting material for future testing.     

The Discovery of a Second Field Methane Brown Dwarf from Sloan Digital Sky Survey Commissioning Data

We report the discovery of a second field methane brown dwarf from the commissioning data of the Sloan Digital Sky Survey (SDSS). The object, SDSS J134646.45-003150.4 (hereafter SDSS 1346-00), was selected because of its very red color and stellar appearance. Its spectrum between 0.8 and 2.5 μm is dominated by strong absorption bands of H2O and CH4 and closely mimics those of Gliese 229B and SDSS 162414.37+002915.6 (hereafter SDSS 1624+00), two other known methane brown dwarfs. SDSS 1346-00 is approximately 1.5 mag fainter than Gliese 229B, suggesting that it lies about 11 pc from the Sun. The ratio of flux at 2.1 μm to that at 1.27 μm is larger for SDSS 1346-00 than for Gliese 229B and SDSS 1624+00, which suggests that SDSS 1346-00 has a slightly higher effective temperature than the others. Based on a search area of 130 deg2 and a detection limit of z*=19.8, we estimate a space density of 0.05 pc-3 for methane brown dwarfs with Teff approximately 1000 K in the 40 pc3 volume of our search. This estimate is based on small-sample statistics and should be treated with appropriate caution.     

统筹兼顾 全面部署 资源型城市可持续发展迈入新阶段——《全国资源型城市可持续发展规划》专家解读之一

正《国资源型城市可持续发展规划》是国家全全面部署资源型城市可持续发展工作的行动纲领,对保障我国能源资源战略供给,统筹推进资源型城市这一特殊类型地区的新型工业化和新型城镇化建设,贯彻落实党的十八大和十八届三中全会精神,推进资源型城市全面改革和转型发展具有重大意义,标志着我国资源型城市可持续发展工作进入了新的阶段。总体来看,这部《规划》有五大亮点。亮点一:《规划》突出了转型发展和深化改革的基本主线