世界遗产文化景观及其国际新动向

文化景观是当前国际风景园林界和遗产界的热点。以文化景观的实践领域——世界遗产文化景观为切入点,来梳理文化景观的理论和实践脉络,剖析文化景观议题的意义,分析国际发展动向,从而为建立中国国家景观保护体系提供参考框架,使中国的景观保护为世界遗产文化景观的文化多样性作出应有的贡献。     

Lakes in the Finnish Eurowaternet: status and trends

The Eurowaternet is a monitoring network designed to cover all European countries, with the overall objective of obtaining timely, quantitative and comparative information on the status of inland waters so that their key environmental problems can be defined, quantified and monitored. Finland launched the Eurowaternet for lakes in 2000. The network was set up according to guidelines of the European Environment Agency (EEA) and was based on national, regional and local monitoring programmes. It includes 253 lake sites, divided into the following groups by, for example, their loading background and size: (i) reference sites, (ii) point-source loading (impact) sites, (iii) agricultural sites, (iv) representative sites, i.e. lakes <100 km(2) with typical water quality in the catchment and (v) lake deep sites in large lakes (>100 km(2)). We examined the water quality and its development during 1976-2001 in these groups, using data from surface and near-bottom water layers at summer and winter stagnation. In addition, the representativeness of the network was evaluated. Summer mean concentrations of total P (TP) during 1990-2001 in surface water were (i) 6.8+/-1.8 microg 1(-1) in reference lakes, (ii) 24+/-5 microg 1(-1) in lakes affected by point loading, (iii) 58+/-32 microg l(-1) in agricultural lakes, (iv) 14+/-2.2 microg l(-1) in representative lakes and (v) 11+/-2.1 microg l(-1) in large lakes. Comparison with reference lakes revealed major impact of human activities on TP and total N (TN)-and consequently on chlorophyll a (a-chl) and transparency-in all other groups, especially agricultural lakes. Decreasing TP and increasing O(2) trends were found at impact sites, reflecting water protection measures taken in pulp and paper mills and municipalities. More surprisingly, we found increasing alkalinity trends in all but agricultural sites and decreasing NO(2)-N+NO(3)-N (NO(x)-N) trends particularly in pelagic areas of large lakes. Comparison of water quality in Eurowaternet lakes with those in randomly sampled lakes (Finnish Lake Survey) revealed that the Eurowaternet covers the entire range of concentrations of TP, TN and conductivity in Finnish lakes, but <1-km(2), eutrophic and/or brown water lakes are underrepresented. Only 0.2% of a total of 13114 small lakes (0.1-1 km(2)) are included in the annual monitoring program of the Eurowaternet.     

Chinese Garden Research in the 21st Century International Academia —A Diachronic Analysis of Journal Studies in the History of Gardens & Designed Landscapes and Dumbarton Oaks Library and Collection

In response to increasing attention from international academia on Chinese gardens, this article advances China’s landscape studies by exploring international research trends on Chinese gardens during the 21st century. It mainly adopts a diachronic perspective to examine the journal Studies in the History of Gardens & Designed Landscapes—a leading journal, and Dumbarton Oaks Research Library and Collection (Trustees for Harvard University)—international academia’s leading institution on landscape studies. Using a bibliometric approach, it first carries out a statistical analysis of the rules and trends of development to explore the distribution patterns of Chinese gardens. Based on this analysis, it uses time series analysis to study the relationships of related academic discourses and contexts. The study reveals that Chinese garden studies led by Chinese scholars has attracted increasing attention from international academia and has involved growing numbers of scholars from various disciplines. Consequently, it has not only shaped much of the output from China and Britain, but is also driving a paradigm shift away from studying Chinese classical gardens to modern designed landscapes, drawing upon a monolithic approach to investigate the pluralistic, and from focusing on Chinese national interaction to transnational interaction.     

论我国黑社会犯罪的发展趋势与遏制对策

黑社会犯罪问题是当今世界各国都普遍关注的热点问题，我国的黑社会犯罪在近年来也死灰复燃，严重的危害了我国的社会稳定和人民群众的生命财产安全。正确认识我国黑社会犯罪的发展趋势，有针对性地采取措施，有效遏制其发展态势，是我国打击黑社会犯罪的根本途径。     

国际钨市场分析

本文根据笔者于1994年11月3日至4日在美国阿拉巴马州亨茨维尔市召开的在国际钨协（ITIA）第7次年会上搜集到的大量数据和资料，对近几年来国际钨市场的供应和生产、需求量和国内消耗量做了详实的分析，并对今后的发展动向进行了预测．     

Detection and estimation trends linked to air quality and mortality on French Riviera over the 1990-2005 period

There is a profound relation between human health and well being from the one side and air pollution levels from the other. Air quality in South of France and more specifically in Nice, is known to be bad, especially in summer. The non-parametric Mann-Kendall test has been developed for detecting and estimating monotonic trends in the time series and applied in our study at annual values of pollutants air concentrations and mortality. An important objective of many environmental monitoring programs is to detect changes or trends in pollution levels over time. Over the period 1990-2005, concerning the emissions of main pollutants, we obtained significant decreasing trends. By considering the ozone mean values in urban areas over the 1997-2005 period, an increase of 3.0% year^− 1 was obtained with annual averages and 3.9% year^− 1 with median values. A clear increasing trend for PM₁₀ ambient concentrations is obtained. In addition, we observed an increase of the Olea (and Grass) pollination season. Over the same period, an annual change rate of +0.31% year^− 1 for “airway diseases” and of + 2.50% year^− 1 for “unknown causes” were identified in the “Alpes Maritimes” county. To see the results, there seems to be a short-term link between the levels of these pollutants and mortality for respiratory causes. The other pollutants concentration showed a downward trend reflecting the reduction policy of the emissions. In addition, we obtained significant decreasing trends concerning the “ischemic heart diseases” (− 1.20% year^− 1) and “asthma” (− 4.03% year^− 1) categories. No significant gender-related difference was identified for these groups.     

Injury incidence rates of cyclists compared to pedestrians,car occupants and powered two-wheeler riders,using a medical registry and mobility data,Rhône County,France

Purpose

In France, the bicycle's modal share is stabilizing after a decline; in some of France's major cities, it has even increased since the 1990s. It is hence relevant to improve the knowledge of the injury risk associated with cycling, compared with other means of transport such as car, walking and powered two-wheeler (PTW) riding.

Methods

The injury incidence rates were estimated by the ratio between accident data and mobility (exposure) data. Two accident data sources were used: police data and hospital-based data (outpatients and inpatients) from the Rhône road trauma Registry. This provides four injury categories: all-injury, hospitalization, serious-injury and fatal-injury. Exposure data were estimated from a regional household travel survey (RTS), using three measures of mobility: number of trips, distance traveled and time spent traveling. The survey was carried out from November 2005 to April 2006, on weekdays, outside school and public holidays; this seasonality was corrected using the 2007–2008 national household travel survey (NTS) that covered an entire year. Only information involving accidents and trips in, and residents of, the Rhône County (1.6 million inhabitants, including the city Lyon) were included in our study. Trends of injury rates were also evaluated in Greater Lyon, using previous travel surveys.

Results

The PTW riders had the highest all-injury, hospitalization, serious-injury and fatal-injury rates, followed by cyclists, and lastly by pedestrians and car occupants. The rates between men and women seemed similar among pedestrians and among car occupants. For car occupants, pedestrians and cyclists, the age group 18–25 years had higher all-injury rate compared with the age group 25–65 years. On the contrary, the age group ≥65 years seemed to have higher hospitalization and serious-injury rates, compared with the age group 25–65 years. For cyclists, the injury rates seemed higher in non-dense areas than in dense areas. Between 1996–1997 and 2005–2006 and with regards to time spent traveling, the all-injury, serious-injury and fatal-injury rates seemed to have decreased for car occupants and cyclists.

Conclusion

The higher risk for PTW riders is confirmed and quantified; it is very high. Decrease in injury rates seems more marked for cyclists; this may indicate the “safety in numbers” effect. Countermeasures for improving road safety could be implemented, especially for vulnerable road user types. However, they will not be sufficient to fill in the gap between the much higher risk for PTW riders and that of car occupants. Exposure-based injury rates can be a tool for monitoring and evaluating the effectiveness of policies and programs, and for comparisons between countries.