涪陵区南沱镇环境保护现状及治理建议研究

南沱镇位于涪陵和丰都交界处,人口密度大,产业污染严重,环保设施薄弱,治理难度大。污染源目前主要受养殖业废物、工业废水、农业面源污染、生活垃圾和农业焚烧等影响。养殖业废物、工业废水和农业面源污染是最重要的几个污染源。在治理上目前主要是采取“无臭”治理的方式,治理设施缺乏科学规划,治理流于形式。养殖和工业污染任意妄为,农业焚烧污染治理缺乏真正意义。文章针对以上现状提出了相应的治理建议：环境治理离不开行政职能的作用,科学制定环保规章制度,加强环境污染惩治力度,制定科学合理的措施把环境保护工作落到实处．加大环保投入。     

Review of submarine groundwater discharge (SGD) in coastal zones of the Southeast and Gulf Coast regions of the United States with management implications

Groundwater serves as the primary drinking water source for over half of the coastal populations of the Southeast and Gulf Coast regions, two of the fastest growing regions in the United States. Increased demand for this resource has exceeded sustainable yields in many areas and induced saltwater intrusion of coastal aquifers. A process associated with coastal groundwater, submarine groundwater discharge (SGD), has been documented as a source of subsurface fluids to coastal ocean environments throughout the Southeast and Gulf Coast regions and is potentially a significant contributor to nearshore water and geochemical budgets (i.e., nutrients, carbon, trace metals) in many coastal regions. The importance of groundwater as a drinking water source for coastal populations and the influences of submarine groundwater discharge to the coastal ocean warrant increased research and management of this resource. This paper highlights findings from recent SGD studies on three hydrogeologically different continental margins (Onslow Bay, NC, southern Florida, and the Louisiana margin), provides background on the common methods of assessing SGD, and suggests a regional management plan for coastal groundwater resources. Suggested strategies call for assessments of SGD in areas of potentially significant discharge, development of new monitoring networks, and the incorporation of a regional coastal groundwater resources council.     

Water Quality in Drinking Water Reservoirs of a Megacity, Istanbul

Providing clean water at relevant quality and quantity is a challenge that regulatory authorities have to face in metropolitan cities that seem to develop at their limits of sustainability. Istanbul strives to face such a challenge for its population of over 10 million, through six surface water resources. Two approaches of classification for the reservoirs are presented, one based on current regulations and an alternative based on a more detailed classification. The results have shown that nutrient control is the primary issue, and one of the reservoirs has already exceeded the limits of being eutrophic, one is at mesotrophic conditions, and the remaining four are at the limit of being eutrophic, indicating the significance of making the correct decision and taking pertinent measures for management and control. It has been observed that the only mesotrophic resource, which also has the best general quality class, has no industry and a very low population density, whereas the one that is already eutrophic is also the one with the lowest quality class, has the highest population density, and has the greatest percentage of urban land use within its watershed.     

Land use change in California,USA: Nonpoint source water quality impacts

California’s population increased 25% between 1980 and 1990, resulting in rapid and extensive urbanization. Of a total 123,000 ha urbanized in 42 of the state’s 58 counties between 1984 and 1990, an estimated 13% occurred on irrigated prime farmland, and 48% on wildlands or fallow marginal farmlands. Sixty-six percent of all new irrigated farmland put into production between 1984 and 1990 was of lesser quality than the prime farmland taken out of production by urbanization. Factors dictating the agricultural development of marginal farmlands include the availability and price of water and land, agricultural commodity prices, and technical innovations such as drip irrigation systems that impact the feasibility and costs of production. The increasing amount of marginal farmland being put into production could have significant water quality consequences because marginal lands are generally steeper, have more erodible soils, poorer drainage, and require more fertilizer than prime farmlands. Although no data exist to test our hypothesis, and numerous variables preclude definitive predictions, the evidence suggests that new irrigated marginal lands can increase nonpoint source (NPS) pollution for a given size area by an order of magnitude in some cases.     

从协调到协同：跨区域环境治理中的监管体制改革与路径——基于万达开川渝统筹发展示范区视角

区域环境协同治理理论可为跨区域环境监管体制改革提供重要理论支撑。在政策和法律法规的推动下,近年来我国跨区域环境治理取得了一定成效,但是仍存在中央与地方权责划分不明,跨区域环境监管缺乏权威性,环境监管垂管制度改革不彻底等问题。现有机制无法有效支撑地方政府开展跨区域环境监管和深层次的环境协同高效治理。为进一步突破现有的制约障碍,提高跨区域环境协同治理效率,应当进一步加快中央层面的跨区域统一立法和地方层面的跨区域协同立法,以法律保障跨区域环境监管体制改革向纵深推进,将中央与地方政府环境保护的权责在法律中进行明确和细化,中央政府成立专门的跨区域环境治理机构,地方层面成立跨区域环境治理协同机构,理顺跨区域环境治理中的纵向和横向关系,进而推进我国生态文明体制建设。     

Territorial politics and the success of collaborative environmental governance: local and regional partnerships compared

The paper explores the role local governments and territorial proximity play in the efficiency of collaborative environmental governance. It develops the hypothesis that the representatives of local authorities involved in partnerships possess resources to diminish the pitfalls of sustainable governance, facilitate coordination, and contribute to the success of shared policy-making. Four French and English partnerships are presented. They include a diversity of stakeholders such as fisheries, ports, farmers, yachting associations, environmental NGOs, or local authorities. Thereby, the paper develops whether and under which conditions local governments play a positive or negative role, as well as comparing territorial levels of implementation and the effects of geographical proximity. It is shown that collaboration at the regional level prevents the integration of decision-making in organisational networks, the inclusion of citizens, and the development of social responsibility for stakeholders – the partnership acting as a formalisation of pre-existing lobbying. Locally, governments assume inter-organisational leadership and do contribute to the institutionalisation of the new forums. Yet, local successes of partnerships answer logics of social, rather than environmental, regulation. The local attenuation of usage conflicts does not necessarily reduce the negative effects of those usages on the environment. By stressing a collaborative definition of environmental problems, the partnerships tend to sideline substantial policy changes, and possibly conflict with the goals and long-term temporality of sustainable governance.     

农村生活污水与小流域水环境协同治理的规则型构——基于临沂“兰山模式”的实践样本

如何对农村地区的流域水环境进行高效而低成本的治理,是当前农村资源环境治理面临的挑战之一。本文以山东临沂市兰山区柳青河水环境污染治理作为典型案例,从规则型构视角剖析行动规则对"兰山模式"的作用机制。其中,边界规则打破了农村生活污水与小流域水环境资源治理的边界,企业等新行动主体的资金、技术的溢出效应提高了治理效率;身份规则改变了行动主体的参与动机,加强了多方主体间的交互作用;选择规则减少了多方治理主体的责任冲突;聚合规则弥补了农户在环境治理中的缺位。在四项行动规则的共同作用下,"兰山模式"实现了农村生活污水与小流域水环境的协同治理,是农村水环境治理的实践样本。     

公众参与对环境治理效果的影响——基于阶梯理论的实证研究

近年来,公众已经成为中国环境治理中不可或缺的力量,公众参与的方式和渠道也在不断拓展和丰富。为考察不同类型公众参与方式对环境治理效果的影响差异,本文基于公众参与阶梯理论,选取四类公众参与方式和四类污染物,结合我国2008—2017年30个省份数据,利用面板数据回归模型进行了实证检验。结果表明,横向比较不同类型的公众参与方式,公众环境来访对环境治理的促进效果优于环境信息公开和环保网络舆论,而政协提案、人大议案的积极效应尚不显著。纵向比较不同类型的污染物治理效果,公众参与能显著促进大气污染物的减排,对噪声和固体废物污染效果的影响次之,而在水污染治理中的作用较不理想。建议政府进一步优化健全环境信息公开机制,并重视公众层面的环境诉求,建立公众与地方生态环境部门的良好互动机制,同时鼓励公众通过新媒体渠道参与环境治理。     

以跨学科模型体系支撑经济社会绿色低碳发展

正2020年9月22日,国家主席习近平在第七十五届联合国大会一般性辩论上发表重要讲话,承诺我国将提高国家自主贡献力度,采取更有力的政策和措施,二氧化碳排放力争于2030年前达到峰值,于2060年前实现碳中和。实现"双碳"目标的关键在于控制化石能源消费,而能源是经济发展的物质基础,节能降碳措施将为我国经济发展带来显著压力。今后一段时间内,我国将面临节能减排与后疫情重建的双重挑战,亟须开展相关理论与实证研究,为绿色低碳发展提供科学依据。     

生态文明背景下自然资源治理体系的框架设计

长期相对滞后的自然资源治理体系,是造成我国资源环境问题的主要原因之一。目前生态文明建设再次对我国自然资源治理体系提出了新的要求。本文按照生态文明的规范内涵,揭示了生态文明建设与自然资源治理体系建设间的内在联系和对治理体系的现实需要。在对已有自然资源治理体系的相关研究进行梳理的基础上,揭示了我国现行自然资源治理体系中存在的主要问题。本文旨在通过设计资源治理的框架设计填补这些现实需要与主要问题。按照将自然资源系统嵌入动态社会经济-生态系统并纳入相互影响与关联的思路,本文从自然系统与社会经济系统互动、科学的评估体系与信息传递,多主体参与和多中心治理途径以及制度保障等方面设计了有机自然资源治理体系框架的核心内容与结构。