Vegetation of the Northern Russian Far East in geographic information systems

The cartographic method, in combination with computer technologies and special software, was used to develop a series of projects of geographic information systems (GISs), including regional GISs (RGISs) for three administrative regions (Magadan oblast, Chukchi Autonomous Area, and Koryak Autonomous Area) and the territorial GIS Vegetation of the Northern Russian Far East.     

工业开发区区域环评的特点

从工业区域开发与单项建设项目的区别入手 ,阐述工业开发区区域环境评价的特点 ,并提出区域环评中在技术方法上需要进一步丰富和发展的工作内容。     

Global climate change and regional sustainable development: the case of Mackenzie Basin in Canada

Cohen et al. [16] suggest that in order to explore ways to bring climate change (CC) and sustainable development (SD) research together, it is necessary to develop more heuristic tools that can involve resource users and other stakeholders. In this respect, this paper focuses on methodological development in research to study climate change impacts and regional sustainable development (RSD). It starts with an introduction of an integrated land assessment framework (ILAF) which is part of the integrated phase of the Mackenzie Basin Impact Study (MBIS) in Canada. The paper then provides some articulation on how the integrated approach was applied in the Mackenzie Basin to show implications of climate change for RSD.     

长三角区域一体化的环境效应研究进展

长三角区域一体化的环境效应研究对于资源节约和环境友好型社会的建立和长三角区域整体竞争实力的提升具有重要意义。总结当前该领域研究在理论、方法等方面取得最新进展的基础上,指出当前研究的薄弱环节,并展望未来的研究方向。研究表明：目前长三角区域一体化的环境问题受到普遍关注,已从经济空间格局变化、产业集聚发展与污染转移、人口增长压力及外商直接投资增长等多个方面对长三角区域一体化的环境影响机理和效应进行分析,并从区域环保合作（环保一体化）、区域生态补偿及环保规制等方面探讨解决长三角区域一体化环境效应的途径。在研究方法上,以计量经济学模型和采用ArcGIS空间分区为主的定量分析方法开始应用于长三角区域一体化的环境问题变量的识别及基于环境约束的一体化空间优化格局。当前的研究尚未形成体系,理论研究欠缺,方法应用有限。从发展趋势看,今后基于区域一体化的环境效应的机理研究有待深入,多学科融合、新技术方法的应用将得到加强     

辽宁省可持续发展能力及调控对策研究

本文从可持续发展能力的内涵出发，分析了建国以来辽宁省可持续发展能力建设的成就与问题，认为辽宁省具有实施可持续发展的社会经济优势，但经济的快速发展是以资源的过度消耗和生态环境的破坏为代价的。并且城市产业结构偏重，区域经济发展很不平衡，城乡二元结构矛盾突出。接着构建了经济、社会和资源环境3大类41项指标，通过层次分析法对辽宁14个地级市可持续发展能力作了区域差异分析，结果表明沈阳、大连属于强可持续发展地区，盘锦、鞍山、本溪和丹东属于较强可持续发展地区，抚顺、锦州、营口、葫芦岛、辽阳属于一般可持续发展地区，铁岭、朝阳、阜新属于弱可持续发展地区。最后提出相应的对策：建立资源节约型的国民经济体系，优化产业结构，调整经济空间布局和保护生态环境。     

江苏省区域生态环境综合评价研究

本文论述了区域生态环境综合评价的基本思路,介绍了江苏省区域生态环境综合评价的技术路线和指标体系,并根据评价结果对江苏省生态环境区域分异规律作了简要分析。     

区域可持续发展生态评估的能值分析研究进展与展望

可持续发展的生态评估是当前国际生态经济学与可持续发展研究的前沿问题之一，能值分析以能量为单位定量评估人类生态经济系统中各种生态流的可持续性，是一个重要的研究方向。尽管能值分析定量评价了自然环境资源对人类生态经济系统的贡献．克服了传统能量与经济分析方法的诸多缺憾，但在理论方法上仍存在不足之处。综合国内外区域能值分析的最新进展。能值转换率的确定、能值分析与空阃格局分析的整合、能值成本价值论与市场（使用）价值论的整合、可持续性阈值等问题将是下一步的研究重点。     

丹江口库区可持续发展能力分析

从区域可持续发展的角度出发,以湖北省丹江口库区为例,首先定性分析库区可持续发展的优势与问题,认为库区移民安置工作困难,库区可持续发展受到限制;经济增长缓慢,基础设施建设滞后;城镇化水平较低,库区社会矛盾突出;自然资源丰富与开发不足并存,库区淹没加剧土地资源稀缺;环境质量较好,生态基础脆弱。然后采用多因素综合评价模型定量分析了1999～2005年库区可持续发展的变化趋势。结果表明：库区可持续发展能力从1999年到2003年呈现明显的上升趋势,却从2004年开始缓慢下降;而人口、经济、社会、资源和环境各子系统也呈现出不同的特征。最后针对定性和定量评价结果提出相应的对策建议：做好库区移民安置,实现移民稳定就业;减少和消除移民贫困,增加基础设施建设;加快小城镇建设步伐,解决库区社会矛盾;发挥水资源优势,改善库区生态环境。     

Sludge reduction with Tubificidae and the impact on the performance of the wastewater treatment process

To reduce excess sludge, a Tubificidae reactor was combined with an integrated oxidation ditch with vertical circle (IODVC), and a new integrated system was developed for wastewater treatment. A pilot-scale of this integrated system was tested to investigate the sludge reduction with Tubificidae and the impact on effluent quality and sludge production. The dominant worm was Branchnria Sowerbyi in the Tubificidae reactor after inoculation of Branchnria Sowerbyi and Limnodrilns sp., and the maximal volume density of wet Tubificidae in vessels of the Tubificidae reactor was 17600 g/m3. Two operational modes, treating the excess sludge (first mode) and the returned sludge (second mode) of IODVC by the Tubificidae reactor, were used in this experiment. The results showed that the excess sludge reduction rate was 46.4% in the first mode, and the average sludge yield of the integrated system was 6.19×10-5 kg SS/kg COD in the second mode. Though the sludge returned to IODVC via the Tubificidae reactor, it had little impact on the effluent quality and the sludge characteristics of the IODVC. No new type of recalcitrant substance in the supernatant was discharged into the environment when the sludge was treated by Tubificidae. The experimental results also indicated that no significant changes occurred on the viscosity, specific resistance, and the floc size distribution of the sludge.     

Chlorobenzenes in waterweeds from the Xijiang River （Guangdong section） of the Pearl River

The Xijiang River is the major source of water for about 4.5 millions of urban population and 28.7 millions of rural population. The water quality is very important for the health of the rural population. The concentration and distribution of chlorobenzenes (CBs) in both water and waterweeds collected from 4 stations in the Xijiang River (Gangdong section) of the Pearl River in April and November were determined. The result showed that nearly every congener of CBs was detected. The total contents of CBs (∑CBs) in the river water ranged from 111.1 to 360.0 ng/L in April and from 151.9 to 481.7 ng/L in November, respectively. The pollution level of CBs in the water in April was higher than that in November. The contents of ∑ CBs in waterweeds ranged from 13.53×102 μg/g to 38.27×102μg/g dry weight (dw). There was no significant difference between April and November in waterweeds. The distribution of CBs in roots, caulis, and leaves of Vallisneria spiralis L. showed different patterns. The leaves mainly contained low-molecular-weight CBs(DCBs), whereas the roots accumulated more PCBs and HCBs. The average lgBCFlip (bioconcentration factor) of CBs ranged from 0.64 to 3.57 in the waterweeds. The spatial distribution character of CBs in the Xijiang River was: Fengkai County ＜ Yunan County ＜Yun'an County ＜ Gaoyao County according to the ∑CBs, and the pollution deteriorated from the upstream to the downstream of the Xijiang River. Further analysis demonstrated that the discharge of waste containing CBs may be the main source of CBs pollution in the Xijiang River.