Conflict on the Coast: Using Geographic Information Systems to Map Potential Environmental Disputes in Matagorda Bay,Texas

The sustainable management of coastal natural resources inevitably involves identifying stakeholder conflicts and developing planning processes that prevent these conflicts from becoming intractable disputes. This study links environmental conflict to specific areas within a large ecological system. Specifically, we use Geographic Information Systems (GIS) to map potentially competing stakeholder values associated with establishing protected areas in Matagorda Bay, Texas. By overlaying multiple values associated with a range of stakeholders across space, we are able to identify hotspots of potential conflict as well as areas of opportunity for maximizing joint gains. Mapping stakeholder conflict is an approach to proactively locate potential controversy in response to a specific environmental management proposal and guide decision makers in crafting planning processes that mitigate the possibility of intractable disputes and facilitate the implementation of sustainable coastal policies. Results indicate that under different management scenarios, protected area proposals will generate more conflict in specific areas. Most notably, regulated uses would produce the greatest degree of conflict on or near shore, particularly at the mouth of the Colorado River. Additionally, of all the management scenarios evaluated, the prohibition of coastal structural development would generate the overall highest level of conflict within the Bay. Based on the results, we discuss the policy implications for environmental managers and provide guidance for future research on location-based conflict management within the coastal margin.     

1996年7月湖南益阳特大水灾分析

全面科学地分析了1996年7月湖南益阳夏季特大水灾的历史背景、特点及防御对策，对综合治理洞庭湖提供了科学依据。     

填埋场终场覆盖层甲烷氧化行为实验室模拟研究

利用和强化填埋场终场覆盖层土壤的甲烷氧化能力是控制填埋场温室气体排放的一种经济和有效的手段.以杭州天子岭填埋场终场覆土为研究对象,采用柱实验方法对填埋场终场覆盖层的甲烷氧化行为进行模拟研究.实验结果表明,模拟柱整体甲烷氧化速率由实验初始的3.33 mol·m-2·d-1增至8.33mol·m-2·d-1,表征了甲烷氧化菌群的生长与增殖;覆土层氧气的空间分布与其中的甲烷氧化活动有显著的交互影响,甲烷氧化活动在10～20 cm深度最为强烈;整个实验过程中,甲烷氧化后转化为二氧化碳的比例为51%,其余的碳被微生物所固定.     

负压蒸发法处理生活垃圾填埋场渗滤液

针对渗滤液蒸发处理的工艺发展,结合法国某填埋场的运行实践,着重对一种新型的渗滤液蒸发处理工艺——负压蒸发技术作了技术与特性分析,认为该工艺解决了传统蒸发工艺中普遍存在的设备腐蚀问题,同时所需的加热源能位较低、能量经济性好;负压蒸发出水水质可满足直接排入城市污水厂的要求,经膜处理后可达到回用水质水平。     

气候环境试验设备温度参数数据处理方法的分析与探讨

不同的温度参数数据处理方法有不同的计算结果,本文针对检测与评定气候环境试验设备的技术性能中存在的问题,分析了三个标准(GB 11158-89、GB/T 5170.1-1995、JTM K 05-1991)的温度参数数据处理方法,比对了二组实际检测数据的计算结果,说明"绝对极值法"科学准确、简捷实用.     

Nitrogen-enriched micro-mesoporous carbon derived from polymers organic frameworks for high-performance capacitive deionization

Nitrogenization is an effective method for improving the capacitive deionization（CDI） performance of porous carbon materials. In particular, polymer organic frameworks with heteroatom doping, containing an ordered pore structure and excellent electrochemical stability, are ideal precursors for carbon materials for high-performance CDI. In this study, a nitrogen-enriched micro-mesoporous carbon（NMC） electrode was fabricated by carbonizing a Schiff base network-1 at 500, 600, and 700 °C. Scanning ...     

The impacts of firms’ mobility on the environmental policy

Environmental Economics and Policy Studies - This paper investigates the impacts of firms’ mobility on the environmental policy. We focus on two issues. The first one is the relationship...     

玉米酒精生产过程COD产污系数计算模型的建立

基于玉米酒精生产工艺流程,采用实测和物料衡算结合的方法,分析玉米酒精生产关联物料,并建立关联物质量平衡方程。实验测得绝干全玉米的COD负荷值为1611 mg/g,在此基础上推导出玉米酒精生产工艺的COD产污系数与淀粉出酒率、玉米淀粉含量、胚芽收率、玉米油收率、杂醇油收率和干玉米酒糟收率的量化模型。采用国内行业相关参数值代入模型进行核算,并与《第一次全国污染源普查工业污染源产排污系数手册》和《清洁生产标准酒精制造业》(HJ 581—2010)中的相关系数进行对比。结果表明:手册值在模型计算范围内;模型计算值略大于标准指标,与标准中一级COD产污指标基本一致。     

Dual-reaction-center catalytic process continues Fenton’s story

• Dual-reaction-center (DRC) system breaks through bottleneck of Fenton reaction. • Utilization of intrinsic electrons of pollutants is realized in DRC system. • DRC catalytic process well continues Fenton’s story. Triggered by global water quality safety issues, the research on wastewater treatment and water purification technology has been greatly developed in recent years. The Fenton technology is particularly powerful due to the rapid attack on pollutants by the generated hydroxyl radicals (•OH). However, both heterogeneous and homogeneous Fenton/Fenton-like technologies follow the classical reaction mechanism, which depends on the oxidation and reduction of the transition metal ions at single sites. So even after a century of development, this reaction still suffers from its inherent bottlenecks in practical application. In recent years, our group has been focusing on studying a novel heterogeneous Fenton catalytic process, and we developed the dual-reaction-center (DRC) system for the first time. In the DRC system, H₂O₂ and O₂ can be efficiently reduced to reactive oxygen species (ROS) in electron-rich centers, while pollutants are captured and oxidized by the electron-deficient centers. The obtained electrons from pollutants are diverted to the electron-rich centers through bonding bridges. This process breaks through the classic Fenton mechanism, and improves the performance and efficiency of pollutant removal in a wide pH range. Here, we provide a brief overview of Fenton’s story and focus on combing the discovery and development of the DRC technology and mechanism in recent years. The construction of the DRC and its performance in the pollutant degradation and interfacial reaction process are described in detail. We look forward to bringing a new perspective to continue Fenton’s story through research and development of DRC technology.