不确定条件下应急资源分配区间规划模型研究

为获得有限应急资源条件下满足多个目标的最优分配方案,提高事故应急救援效率,对某化工园区化工事故的应急物资分配进行了研究。在传统线性规划基础上引入区间数描述物资需求量和物资运输时间的不确定性,并以应急物资分配的经济性、时效性和公平性为目标,建立了多目标线性区间规划模型,并将所建模型应用于以化工园区为背景的化工事故中,同时为验证该模型的有效性,将提出的多目标区间规划模型与多目标确定性规划模型相比较。结果表明,区间规划模型得到的结果比较可观,可为相关决策单位应急资源分配提供参考,同时区间规划也是对传统资源配置分析方法的有益补充。     

When and where do we see the proximity effect of a new park? –A case study of the Dream Forest in Seoul,Korea

This study aimed to unpack the dynamic proximity effects of a park on residential values in the urban regeneration context: first by the development phase of the park, and second, by specific characteristics of the residential units. The study site is the Dream Forest in Seoul, South Korea, and the study period is from 2006 to 2015. The two-fold multilevel regression analysis suggests that the Dream Forest began exerting proximity effects from the time of site acquisition by the city, which peaked at a 3.7% price increment per 100-meter distance to the park from a prototypical housing unit, soon after the public announcement of the park procurement plan. During construction, inauguration and stabilization, the effect has remained at around 3.0%. The analysis also suggests that the proximity effect applies unevenly to housing units: apartment type or older housing units are more sensitive to the externality effects than their counterparts – multifamily type or newer housing units.     

生态工业园建设研究——基于与传统工业园差异上的论述

从建设的角度,生态工业园较传统工业园存在巨大差异性,它涉及：①企业生产链的构建和完善;②生态工业园与所在社区的共建;③公共服务平台的构建等传统工业园建设中未涉及或较少涉及的新领域。其目的是实现资源的最大利用与环境的最小污染。构建生态工业园需要宏观上的政府政策支持以及微观上的以政府占主导地位的各个生态工业园规划领导小组的具体实施。     

铁岭县工业园区发展与环境保护措施探讨

参考有关工业园区建设和循环经济的文献,结合铁岭县实际情况,提出了铁岭县工业园区发展和环境保护协调发展的有效措施。     

江阴市部分乡镇工业集中区土壤重金属环境质量评价

选取了江阴市工业企业较集中的青阳镇工业园区、周庄镇工业园区以及利港镇工业园区,并选取了有代表性的化工、机械制造以及电子材料企业周边土壤作为重要检测样品点,通过检测得出结论：土壤pH指标符合土壤环境质量标准.GB15618-1995,土壤表层土以及中层土都受到重金属污染,深层土在警戒线附近。     

Modelling visitor groups' intentions to displace from an urban trail: a combined stated preference and video monitoring approach

Depending on gender and activity, overcrowding and safety concerns may detract from urban green space use. Differences in use displacement intentions from a recreational trail in a forest in Vienna were investigated for male and female walkers as well as male and female dog-walkers (N = 425) using an image-based stated preference model. The trail scenarios were depicted as digitally calibrated images that systematically displayed combinations of levels of crowding with different mixes of user types and visitor behaviour. Visitors were asked whether the presented recreation scenario was so unacceptable that they would shift their use away from the presented trail. Hours and days of stated non-use of the recreation trail by various user groups are estimated by integrating the results of the behavioural model with annual visitation data. Use displacement intentions differed by gender and activity. High use levels were a greater concern for all respondents than very low use levels, particularly for female dog-walkers. However, only a small proportion of the recorded hours were heavily used. Safety concerns about very low use levels reduced the potential times of forest use for female walkers without a dog.     

Using Coral Disease Prevalence to Assess the Effects of Concentrating Tourism Activities on Offshore Reefs in a Tropical Marine Park

Abstract: Concentrating tourism activities can be an effective way to closely manage high‐use parks and minimize the extent of the effects of visitors on plants and animals, although considerable investment in permanent tourism facilities may be required. On coral reefs, a variety of human‐related disturbances have been associated with elevated levels of coral disease, but the effects of reef‐based tourist facilities (e.g., permanent offshore visitor platforms) on coral health have not been assessed. In partnership with reef managers and the tourism industry, we tested the effectiveness of concentrating tourism activities as a strategy for managing tourism on coral reefs. We compared prevalence of brown band disease, white syndromes, black band disease, skeletal eroding band, and growth anomalies among reefs with and without permanent tourism platforms within the Great Barrier Reef Marine Park. Coral diseases were 15 times more prevalent at reefs with offshore tourism platforms than at nearby reefs without platforms. The maximum prevalence and maximum number of cases of each disease type were recorded at reefs with permanently moored tourism platforms. Diseases affected 10 coral genera from 7 families at reefs with platforms and 4 coral genera from 3 families at reefs without platforms. The greatest number of disease cases occurred within the spatially dominant acroporid corals, which exhibited 18‐fold greater disease prevalence at reefs with platforms than at reefs without platforms. Neither the percent cover of acroporids nor overall coral cover differed significantly between reefs with and without platforms, which suggests that neither factor was responsible for the elevated levels of disease. Identifying how tourism activities and platforms facilitate coral disease in marine parks will help ensure ongoing conservation of coral assemblages and tourism.     

黑河草滩庄引水枢纽的泥沙冲淤对生态环境的影响

根据黑河草滩庄引水枢纽闸上游泥沙冲淤情况 ,分析了局部冲刷、泥沙淤积和上下游输沙不平衡等对生态环境的影响 ,提出了改善生态环境的具体工程措施     

“一园多组团型”工业园区的规划环评思路研究

“一园多组团型”工业园区是指由多个地理位置不同的产业组团组成的工业园区.文章结合对四川省部分市县该类工业园区开展规划环评的实战经验,浅要地提出在各组团选址和产业布局的环境合理性分析、分组团的污染源估算、环境容量计算和水环境影响预测、环境现状调查、公众参与等方面需要关注的问题和具体的操作办法,有利于从环保角度宏观地把握这个区域产业分布的合理性及产业发展对区域环境的叠加影响.     

鲁北生态工业园区案例研究

本文以鲁北生态工业园区为案例，从产业链有机构成、工业生态系统集成等方面进行了系统的分析与总结，提出了未来鲁北生态工业园区延伸与发展的方向。