Developing web-based urban energy environmental database

Unbalanced energy consumption distribution caused by the concentration of facilities and population topples the natural energy equilibrium of a city and causes environmental problems such as urban tropical night,heat island phenomenon,global warming deterioration.Therefore,to secure eco-friendliness and sustainability of a city,it is necessary to introduce measures to alleviate the unequal distribution phenomenon of urban energy consumption from the city planning stage.For this purpose,the first step is to understand the current energy environment.The urban energy environment is affected by many factors in addition to gathering of buildings.Therefore,there is a limit to fully understanding advanced urban energy environment with only simple statistical urban information management technique.Research on methods of analyzing urban energy environment through simulation of recent urban scale is underway.There is not enough discussion about basic informaion databases for environmental analysis simulation of urban energy.This study presents a method using GIS(geographic information system) and web-based environmental information database as a way to improve the simulation accuracy.First,environmental information factors used for urban simulation were derived,and a web-based environmental information database targeting Daegu metropolitan city of Korea was built.Then,the urban energy environment was analyzed on a trial basis by linking the database with GIS.

Market-based solutions:An appropriate approach to resolve environmental problems

It was the first time that the Intergovernmental Panel on Climate Change(IPCC),which was founded in 1988,regarded climate change as a significant international political problem(O'Brien and Williams 2007).Over the next decades,environmentalist and policy makers have been applying many efficient ways to solve various environmental problems and have gained achievements.With the support of successful cases,this paper will focus on the market-based solutions and discuss its advantages compared with the conventional approach.

Online Monitoring Volume Deformation of Cement-based Materials in Multiple Environments

Comparing and analyzing some volume deformation measuring means for cement-based materials at home and abroad, a continuous online monitor of cement-based material volume deformation in multiple environments is developed. The device is designed based on the environmental simulation technology, micro-distance measuring technology of laser and eddy current, and transmission agent online monitoring the deformation of multi-group samples. This device can be used widely, such as glass, ceramics, walling material, and so on, with high precision, low testing cost, and intellectualization.

Geoacoustic Inversion Based on Modal Dispersion Curve for Range-Dependent Environment

A geoacoustic inversion method is proposed based on the modal dispersion curve of two-wideband explosive signals for range-dependent environment. It is applied to the wideband explosive sound source data from the South China Sea in 2012. The travel time differences of different modes at various frequencies and distances are extracted by warping transform. The mean bottom acoustic parameters are inverted by matching the theoretical modal time differences to that of the experimental data. The inversion results are validated by using other explosive signals at different distances.

Source Range Estimation Based on Pulse Waveform Matching in a Slope Environment

An approach of source range estimation in an ocean environment with sloping bottom is presented. The approach is based on pulse waveform correlation matching between the received and simulated signals. An acoustic prop- agation experiment is carried out in a slope environment. The pulse signal is received by the vertical line array, and the depth structure can be obtained. For the experimental data, the depth structures of pulse waveforms are different, which depends on the source range. For a source with unknown range, the depth structure of pulse waveform can be first obtained from the experimental data. Next, the depth structures of pulse waveforms in dif- ferent ranges are numerically calculated. After the process of correlating the experimental and simulated signals, the range corresponding to the maximum value of the correlation coefficient is the estimated source range. For the explosive sources in the experiment with two depths, the mean relative errors of range estimation are both less than 7%.

A Reconstruction and Discussion of the Effect of Diagenetic Environment on Hydrocarbon Generation Based on Diagenetic Mineral Assemblage in Mudstone

Inorganic minerals in mudstone are composed of clay minerals,carbonate and detrital minerals.Detrital minerals(such as quartz and feldspar)are mainly original deposit.However,clay minerals(kaolinite,illite,and chlorite)and carbonate(calcite and dolomite)are mostly diagenetic minerals.Furthermore,conversion of the four kinds of clay minerals are common.The formation of clay minerals and carbonate is controlled by temperature,pressure,p H,Eh and type of cations during diagenesis.Therefore mineral assemblage can indicate the characteristics and change of diagenetic environment.In addition to inorganic minerals,there are also organic matter of different sources and chemical properties in mudstone.Traditionally,it is considered that evolution of organic matter is controlled by thermal effect.Now studies show that inorganic and organic matter can interact with each other and form clay-organic complexes.This suggest that attention should be paid to the influence of diagenetic mineral assemblage and diagenetic environment on the evolution of organic matter* Samples of mudstone from 1500-4500m of the Palaeogene in the Dongying Depression,China,were collected to investigate the changes of mudstone diagenetic environment.XRD,thin section and SEM were used to detect diagenetic minerals and assemblage characteristics.Results showed that content of detrital minerals,which are floating in mud matrix or preserved as silt laminae,is basically unchanged from shallow to deep strata.Clay minerals which are gathered as argillaceous matrix or preserved as argillaceous laminae have growth and decline relation to carbonate which mainly appear as micropoikilitic ferriferous calcite and ferriferous dolomite.All these characteristics indicate that detrital minerals are exogenetic,whereas carbonate is diagenetic minerals.Based on the SEM analysis of the clay minerals,it was found that smectite present honeycomb and reticulate structure,while illite present filiform and schistose structure and there are growth and decline relationship between them.Nevertheless,hexagonal tabular and stratified kaolinite has the highest content from 2400m to3300m.Rosette and stratified chlorite shows increase trend when the burial depth is deeper than 3300m.These characteristics indicated that clay minerals are diagenetic minerals and there are conversions among the four types.Therefore form shallow to deep,three diagenetic mineral assemblage zones can be divided based on the characteristics of carbonate and clay minerals in mudstone.Namely,smectite+illite/smectite zone in the depth of 2000-2500m;kaolinite+illite/smectite zone in the depth of 2500-3300m and illite+chlorite+carbonate zone below 3300m.Previous studies showed that kaolinite is stable under acidic conditions,while other clay minerals and carbonate are stable under alkaline conditions.Hence according to mineral assemblages feature,it was inferred that diagenetic environment of mudstonehasundergonethechangeof alkaline-acid-alkaline.For the organic matter with different chemical properties in mudstone,the hydrocarbon generation will be different in the acidic and alkaline diagenetic environment even if the conditions of temperature and pressure are the same.Therefore,for hydrocarbon generation we should not only focus on thermal effect,but also pay more attention to the differences of diagenetic environment which have great significance for the understanding of hydrocarbon generation,hydrocarbon expulsion and reservoir formation in mudstone.

Solving Multi-Area Environmental/Economic Dispatch by Pareto-Based Chemical-Reaction Optimization Algorithm

In this study, we present a Pareto-based chemicalreaction optimization(PCRO) algorithm for solving the multiarea environmental/economic dispatch optimization problems.Two objectives are minimized simultaneously, i.e., total fuel cost and emission. In the proposed algorithm, each solution is represented by a chemical molecule. A novel encoding mechanism for solving the multi-area environmental/economic dispatch optimization problems is designed to dynamically enhance the performance of the proposed algorithm. Then, an ensemble of effective neighborhood approaches is developed, and a selfadaptive neighborhood structure selection mechanism is also embedded in PCRO to increase the search ability while maintaining population diversity. In addition, a grid-based crowding distance strategy is introduced, which can obviously enable the algorithm to easily converge near the Pareto front. Furthermore,a kinetic-energy-based search procedure is developed to enhance the global search ability. Finally, the proposed algorithm is tested on sets of the instances that are generated based on realistic production. Through the analysis of experimental results, the highly effective performance of the proposed PCRO algorithm is favorably compared with several algorithms, with regards to both solution quality and diversity.

Research on market-based policy instruments for eco-environmental protection

The selection of policy instruments involves policy efficiency and policy effect.Effective settlement of eco-environment problems in the process of industrialization and implementation of active eco-environment protection depend on the innovation of policy instruments.In this paper,based on a descriptive analysis of the policy instruments for ecoenvironmental protection of our country,combined with the theoretical analysis and the empirical research on current marketization of eco-environmental protection,the authors indicate that eco-environmental problems originate fi'om the damage of eco-environment and the extemalities of eco-service,and that the market-based policy instruments which are helpful to balance the relationship between fight,responsibility and interest in the eco-service are effective measures to eliminate externalities and protect eco-environment.

市场型环境规制、碳减排与企业环境绩效:来自中国碳市场的证据

中国碳市场政策的持续推进,标志着环境规制体系逐步从命令控制型向市场激励型转变,准确测度碳市场作为环境规制工具的政策效应对于碳达峰碳中和的实现具有重要意义。基于A股上市企业ESG环境得分和财务数据,运用主成分分析法改进的BP神经网络模型估算的上市公司碳排放强度,并使用多时点DID模型实证检验发电行业全国碳排放权交易市场对于参与企业碳排放量及环境表现的影响。研究结果显示:发电行业全国碳市场的推行显著降低了参与企业的碳排放量,并提升了企业ESG环境得分;发电行业全国碳市场可以通过提高控排企业的创新水平来改善企业环境绩效。因此,中国应逐步扩大碳市场覆盖的行业和范围,引导企业不断加大创新投入,通过技术创新提高污染治理能力。

Environmental Justice through Community-Policy Participatory Partnerships

Geographical information systems (GIS) are often used to design environmental justice (EJ) policy interventions. Leveraging GIS and other graphics, overburdened EJ communities can learn from maps that geographically link environmental burden (EB) and social disparity (SD) data. Visually representing EB and SD data concretizes the unjust distributions of environmental and broader inequitable societal policies. These maps can be used to efficaciously assess EJ disparities created by such policies through exploring socioeconomic characteristics with local communities. Given the great variation in how GIS EJ applications measure and visualize EB and SD, we present a community-based participatory design (CBPD) lens to collaboratively work across overburdened communities and support making EJ data accessible to all stakeholders. Our location proximity approach is a powerful way to assess overburdened EJ communities because it relies on user-predefined boundaries, and it doesn’t use a single fixed unit of reference to prioritize areas of intervention. Moreover, most areal unit applications use ordinal measures, such as percentiles, and multidimensional indexes, which are intelligible to understand by many residents. Leveraging a community-based participatory design methodology, we present our novel Proximity to Hazards Dashboard (PHD) that includes data on asphalt plants and industrial corridors, hazards often missing from state-level dashboards but very relevant for city policymaking, as well as more traditionally used environmental hazard sources. The use of the tool by policymakers and community members suggests that EJ categorization should focus less on procedural benchmarks and more on systemic change for policy impacts in ways that sustain the participatory nature of our approach.

马来海松基环氧树脂的制备与性能研究

在“双碳”发展战略目标的背景下,为探索绿色环保型生物基环氧树脂在电工设备上的应用前景,本文以可再生资源松香为原料,制备了一种生物基树脂——马来海松基环氧树脂(MPAER)。以甲基六氢邻苯二甲酸酐(MHHPA)为固化剂,对MPAER/MHHPA体系的固化特性、热性能、力学性能和电气性能进行了系统研究,并和商用双酚A二缩水甘油醚(DGEBA)组成的DGEBA/MHHPA体系进行对比。结果表明:MPAER/MHHPA和DGEBA/MHHPA体系的固化反应活性相当,MPAER/MHHPA体系的玻璃化转变温度为112.8℃,其力学性能和电气性能均稍弱于DGEBA/MHHPA体系,其中MPAER/MHHPA体系的电气强度比DGEBA/MHHPA体系低9.4%。但MPAER/MHHPA体系的综合性能仍较好,可以通过对MPAER进行结构优化或者与其他类型的环氧树脂共混来进一步提高其性能。

逐绿前行:政府绿色采购增进企业绿色治理研究

如何充分发挥市场型环境政策作用激发企业绿色治理动力,是当前完善国家环境治理体系、筑牢高质量发展绿色基底需解决的重要命题。本文根据节能产品与环境标志产品政府采购清单,手工采集清单内提及企业,基于观念治理、过程治理以及末端治理的三方视角,从理论和实证两个层面探讨政府绿色采购对企业绿色治理的影响。研究结果表明,进入政府绿色采购清单能够改善企业绿色治理表现,该结论在考虑潜在的内生性问题并经过一系列稳健性检验后依然成立。机制分析结果显示,政府绿色采购有助于强化企业环境治理意识、发挥绿色创新补偿以及激励环保设备投资,进而提升其绿色治理水平。横截面分析发现,政府绿色采购的微观绿色治理效应对重污染、严规制、强竞争和高科技行业更明显,且通过强制采购方式执行的政策激励效力高于优先采购。本文为全面理解政府绿色采购带来的环境经济效益提供了经验证据,对进一步完善政府绿色采购制度框架、提高环境治理综合质效具有启示意义。

环境生态学教学案例库构建的几点思考

近年来,案例库教学成为高校教学的一个新热点,教学案例库建设可以在一定程度上推动人才培养模式的转变,提升教学效果。以环境生态学为例,深入探索了环境生态学教学案例库构建的基本原则、建设的主要内容及其教学功能,可为今后环境生态学案例库的建设与实施提供一定理论参考。

基于纸基微流控的荧光技术在环境检测中的应用

微流控纸基分析器件(microfluidic paper-based analysisdevice,μ-PADs)凭借成本低廉、绿色环保的优点,在环境检测与分析化学等领域得到广泛的关注。基于纸基微流控的荧光检测技术灵敏度高、易于操作,在现场快速检测方面具有独特的优势,近年来国内外研究者在这一领域的探索日益深入。介绍了μ-PADs的制作方法,探讨了荧光传导机制,并对基于μ-PADs的荧光检测技术在环境污染物检测的研究现状和应用潜力进行了分析总结,同时对其未来发展方向进行了展望。

环境问题前沿案例库建设及应用探索

案例式教学能有效地将理论和应用进行关联,提升学生的学习兴趣,同时拓展学习内容,被教育工作者广泛关注。为提升学生学习兴趣和教学效果,培养学生自主追踪环境学科的热点问题和技术,我们收集大量资料和本专业教师的科研成果,结合专业特色,围绕环境介质中污染物的迁移转化途径及治理和修复技术,建设了环境问题前沿相关案例库,并在环化类课程教学中进行了应用,取得了良好的效果。接下来将进一步对案例库进行完善和更新,推广至更多课程教学中。

基于环境因子优化TSES法选择负样本及其在滑坡易发性评价中的应用

滑坡易发性评价是滑坡灾害防治的重要手段之一,而不合理的滑坡负样本会影响滑坡易发性评价,从而影响到滑坡灾害的防治,因此提供一种合理的负样本选取方法变得尤为关键。以西藏米林市的古滑坡为例,选择高程、坡度、坡向、坡位、距道路距离、距断层距离、距水系距离、地形起伏度、地层岩性、土地利用类型10类环境因子,使用Relief算法计算环境因子的贡献值并依据贡献值优化选择环境因子;基于环境因子优化的目标空间外向化采样法(target space exteriorization sampling,简称TSES)选择负样本,作为性能优异的随机森林模型的输入变量;之后结合优化的环境因子和正或负样本预测米林市的滑坡易发性,并用混淆矩阵和ROC曲线评价构建模型的性能。为检验环境因子优化的TSES法的有效性和先进性,采用耦合信息量法和TSES法选择滑坡负样本并构建随机森林模型,与环境因子优化的TSES法构建的随机森林模型进行对比研究。结果表明,环境因子优化的TSES法构建的随机森林模型的评价效果较好,其ACC为93.7%、AUC为0.987,均高于耦合信息量、TSES法构成的模型。环境因子优化的TSES法能够提高模型的精度,解决多因子作为约束条件取样中因子选取的问题,为滑坡易发性评价采集负样本提供了新的思路。

“三水”统筹的流域水生态环境分区管控技术与实践

基于“三水”(水生态、水环境、水资源)统筹,开展流域空间精细化管控对推进新时代流域协同保护与治理具有重要意义。按照“‘三水’问题识别—‘三水’分区划定—质量目标确定—管控单元集成”的思路,构建了流域水生态环境分区管控技术方法。以白洋淀流域为实践对象,识别出流域性突出生态环境问题;衔接现有水生态环境管理分区与政策要求,划定生态保护红线、环境质量底线及资源利用上线;明确“三水”分区域差异化生态环境管理目标与资源环境承载约束,聚类叠“三水”分区并综合划定水生态环境综合管控单元、制定结构化生态环境准入清单。

碳中和视角下皮革企业环境成本核算与控制研究

碳中和是应对未来全球气候变暖、实现绿色可持续发展的重要举措。本文以碳中和背景下我国全面开展绿色可持续发展为抓手,对皮革企业的环境成本管理的成本核算、成本控制等工作的现状进行总结,认为当前我国皮革企业环境成本核算中存在环境成本确认不全面、环境成本分配不合理等问题;环境成本控制中存在环境成本披露实用性差、控制流程不完整等问题,针对这些问题提出了相应的优化方法。

数字技术赋能社会组织参与社区环境治理——以“村转居”社区为例

【目的】以社区社会组织为组织平台,数字技术创新社区环境治理。【方法】以北京市W社区的环境治理志愿服务组织为案例分析,发现数字技术赋能社区社会组织回应“村转居”社区环境治理需求。【结果】社区社会组织微信群构筑的“虚拟公共空间”成为居民高频互动和环境监督的重要隐形场域,增强了居民的情感连接和组织黏连性。【结论】数字技术赋能社会组织参与社区环境治理,畅通了社区社会组织与社区居委会、志愿者、物业公司、社会工作者等多元主体的沟通渠道,微信群线上交流协商与线下组织行动的协同提升了居民的集体效能感,进一步推动“村转居”社区不同群体之间的整合,使居民关系走向自由、开放和连接。