南湖富营养化主要控制因子分析

本文通过全面分析南湖湖泊系统中营养物之间、营养物与藻类生长之间的相互关系,探讨了各种环境因子对南湖富营养化的影响,结合藻类增长潜力试验结果确定南湖富营养化的主要控制因子,为南湖综合整治提供科学依据。     

唐山南湖春季潜在性富营养化评价与防控分析

针对唐山南湖富营养化问题,对南湖补给水源及湖体水质进行监测与评价。监测结果表明:春季南湖水体中TN、TP含量均超过《地表水环境质量标准》中规定的Ⅴ类水质标准;Chla(叶绿素a)浓度呈增长趋势;补给水源对南湖水体营养物质的贡献大。富营养化评价结果表明:南湖水体水质在春季期间富营养化程度严重,应及时采取有效的生态修复工程措施对唐山南湖外源和内源加以防控,避免藻华暴发。     

开放、多元、可持续生态教育引领学校特色发展——陕西省西安市曲江南湖小学生态文明教育纪实

正西安市曲江南湖小学是西安市曲江新区管委会2014年投资兴建的一所高起点、高标准的全日制公办小学,坐落于美丽的曲江南湖西畔。学校现分为南湖高段校区和芙蓉低段校区,占地总面积约28亩,建筑布局合理,硬件设施完备,环境优美宜人。曲江南湖小学自建校以来,在坚守     

长春南湖富营养化的防治与管理

长春南湖位于长春市南部，是一个半封闭式，以游览、养鱼和游泳为主要目的内陆湖泊，始建于1935年。湖面面积910平方米，库容约24万立方米，最大水深IO米左右，平均水深3米。自70年代起·随着城市建设的发展，南湖周围修建了大批的宿舍和工厂，由于治理施措不配套，使大量生活污水和工业废水排人南湖，致使水质逐年恶化。水的化学、细菌浮游生物、底栖动物等指标，均超过了富营养化标准几倍，水体处于严重的富营养状态。为治理南湖水污染从1990一1994年，东北师范大学环境科学研究所等单位对南湖采取了生态工程治理，并收到了良好效果。一…     

松江水暖鸭自知,一群赤麻鸭陪练出冬泳名将

正一位体弱多病的中年妇女为了强身健体,从1994年开始,无论寒暑,每天都坚持在松花江上游泳健身。20多年过去了,昔日的病妇已成为三次勇夺全国冬泳冠军的名将,而她也与天天在大江上栖戏的野鸭结下了不解情缘,她以鸭为师、爱鸭如女的感人故事在北国江城吉林市广为流传……人鸭共泳现年63岁的孟杰出生在吉林省长春市美丽的南湖     

南湖美,美在人面桃花相映红

2007年,南湖社区被国家环境保护部命名为第二批"全国绿色社区",这是马鞍山109个社区中唯一率先跻身国家级绿色社区行列的典范,南湖究竟有啥独到做法获此殊荣?     

采茶园的“绿”与“蓝”

<正>天蓝、地绿、水清的环泰山生态圈造就了泉城绿茶。位于济南市长清区的千年古刹灵岩寺,是北方饮茶文化发源地,南湖玉露的茶叶种植基地就分布在这里。区域内气     

大学校园里的环保者

以"保护环境,净化心灵"为宗旨,让绿色走进校园,让环保植根于每个同学心间,中南财经政法大学"晓南湖护卫队"和"三木森"环保协会的同学们为了这个绿色环保的梦想,用他们的执著和努力,用他们的奋斗精神和毅力感召着每一个热爱绿色的生命.我们希望这股绿色理念能够流淌在中国的每个大学校园内,流淌在我们每位大学生的心中.     

中国电器院华东分院奠基仪式隆重举行

（本刊讯）5月30日，锣鼓宣喜、金狮迎祥，在这端粽飘香的日子里，中国电器科学研究院华东分院在嘉兴南湖区奠基。国机集团总会计师骆家胧，中国电器院院长、党委书记马坚，副院长、华东分院院长章晓斌，华东分院常务副院长张序星，嘉兴市副市长柴永强、嘉兴市南湖区委副书记吴健等出席，共同见证了这一历史时刻。     

着一片绿色,圆一生梦想——自贡市蜀光绿盛实验学校环境教育纪实

正自贡市蜀光绿盛实验学校是自贡国家级高新区直属的公办九年制义务教育学校,创建于2002年9月,2013年8月建成南湖校区。现两个校区共342名在编教职工,119个教学班,6091名学生。学校坚持"绿色教育"思想和"绿润生命,盛及未来"的办学理念,注重内涵发展、品质发展。坚守"着一片绿色,圆一生梦想"的育人追求,有效开展"绿色学校"环保教育工作,学校先后评为"四川省环境友好型学校""四川     

Eutrophication of Lake Waters in China: Cost, Causes, and Control

Lake water eutrophication has become one of the most important factors impeding sustainable economic development in China. Knowledge of the current status of lake water eutrophicatoin and determination of its mechanism are prerequisites to devising a sound solution to the problem. Based on reviewing the literature, this paper elaborates on the evolutional process and current state of shallow inland lake water eutrophication in China. The mechanism of lake water eutrophication is explored from nutrient sources. In light of the identified mechanism strategies are proposed to control and tackle lake water eutrophication. This review reveals that water eutrophication in most lakes was initiated in the 1980s when the national economy underwent rapid development. At present, the problem of water eutrophication is still serious, with frequent occurrence of damaging algal blooms, which have disrupted the normal supply of drinking water in shore cities. Each destructive bloom caused a direct economic loss valued at billions of yuan. Nonpoint pollution sources, namely, waste discharge from agricultural fields and nutrients released from floor deposits, are identified as the two major sources of nitrogen and phosphorus. Therefore, all control and rehabilitation measures of lake water eutrophication should target these nutrient sources. Biological measures are recommended to rehabilitate eutrophied lake waters and restore the lake ecosystem in order to bring the problem under control.     

Lake eutrophication management modeling using dynamic programming

Lake eutrophication problems have received considerable attention in Taiwan, especially because they relate to the quality of drinking water. In this study, steady-state river water quality and lake eutrophication models are solved using dynamic programming algorithms to find the nutrient removal rates for eutrophication control during dry season. The kinetic cycle of chlorophyll-a, phosphorus and nitrogen for a complete-mixed lake is considered in the optimization framework. The Newton-iterative technique is adopted to solve the nonlinear equations for the steady-state lake eutrophication model. The optimization framework is applied to Cheng-Ching Lake in southern Taiwan. Several nutrient loading scenarios for eutrophication control are studied. Optimization results for nutrient removal rates and corresponding wastewater treatment capacities of each reach of the Kao-Ping River define the least cost approach to lake eutrophication control. A natural purification method, structural free water surface wetland, is also suggested to save more investment and improve river water quality at the same time.     

LAKE REHABILITATION TECHNIQUES AND EXPERIENCES1

ABSTRACT: The degradation of many lakes is the result of aging processes which have been accelerated by the activities of man. Where it is too late to prevent sedimentation and eutrophication problems, lake rehabilitation and protection comprise a resource management option warranting serious consideration. A Wisconsin Lake Renewal Demonstration Project has been evaluating several rehabilitation schemes for the past five years. A selected summary of Project lake rehabilitation activities, including nutrient inactivation, dilution, aeration, and several types of aquatic plant management, suggests the present status of lake rehabilitation.     

LAKE EUTROPHICATION–A NATURAL PROCESS1

Lake eutrophication is an economic, recreational, and aesthetic problem that affects every lake of the world. Eutrophication is the natural process of lake aging, and progresses irrespective of man's activities. Pollution, however, can hasten the natural rate of aging and shorten the life expectancy of a body of water. The eutrophication of a lake consists of the gradual progression from one life stage to another based on the degree of nourishment or productivity. The extinction of a lake is attributed to enrichment by nutritive materials, biological productivity, decay, and sedimentation. Presently used methods for retarding eutrophication are the abatement of cultural enrichment, treatment of eutrophic symptoms, and control of fundamental causes.     

奥运湖不同补水方案营养状态趋势分析

规划中的奥运湖位于奥林匹克公园，运行中将采用人工补水方式。为保证未来奥运湖的正常景观生态功能，源水经奥运公园中人工湿地处理后再引入湖中。在规划设计阶段，提出三种补水方案：（1）清河再生水厂出水经湿地处理后入湖，（2）清河河水经湿地处理后入湖，（3）经湿地处理达地表水环境标准中的Ⅳ类水要求后入湖。为了考察不同水源补水方案对奥运湖的水质保障程度，本研究对不同方案下奥运公园湖水质的时间、空间变化过程予以模拟，分析评价奥运湖可能出现的富营养化状况，并对各个补水方案带来的富营养化风险和基本成因予以推断，为奥运湖的设计运行提供技术依据。结果表明，方案3的富营养化风险最小、水质保障程度最高。结合三种补水方案水质特点，推断磷是主要限制因子，所以控制磷的浓度是保证水质安全、降低富营养化风险的重要途径。     

白洋淀污染现状空间分布规律可视化分析

选用2012年为现状年,运用Surfer软件对白洋淀主要污染物浓度的现状分布、富营养化程度分布及其趋势面进行可视化分析。结果表明:白洋淀大部分淀区的营养盐污染、有机污染以及富营养化程度都相当严重,污染程度由西向东逐渐减轻,其中入淀控制监测断面的污染最严重;白洋淀的污染主要由入淀河流排污产生的点源污染所致,应对白洋淀入淀河流污染进行严格治理;利用Surfer软件制图结果表述简单直观,为白洋淀水质污染状况的表征和评价提供了一种新的尝试。     

Toward Integrated Environmental Management for Challenges in Water Environmental Protection of Lake Taihu Basin in China

Lake Taihu is the third largest freshwater lake in China. It serves many social, economic, and ecological purposes in the drainage basin. Unfortunately, the water has been heavily polluted due to rapid industrialization and urbanization during the last two decades. Notwithstanding great efforts made so far to improve the water quality, the environmental situation is still far from being optimistic. The basin and the lake are facing a range of severe environmental challenges: rapid socio-economic development continues to place great pressures on the environment, current pollution control projects have many problems from the viewpoint of effectiveness and efficiency of their implementations, and the non-point sources of pollution such as agricultural fields, for which control is more difficult than for industrial point sources, have become the main contributors to serious eutrophication of the lake. Considering the characteristics of the environmental challenges and problems confronting the basin and the lake, we focus on integrated environmental management (IEM) as a promising and effective approach to overcome these predicaments. Current practices and problems of environmental management in the basin are examined, and potential future developments are discussed. Three aspects of the IEM are emphasized: institutional cooperation, public participation, and internalization of environmental externalities. We think these are the most critical for not only the basin but also for the whole of China to achieve a sustainable society.     

徐州市云龙湖富营养化特征分析与评价

利用相关指标（叶绿素a、总磷、总氮、透明度、浮游植物密度等）分析了徐州市云龙湖水体的富营养化特征，表明磷是藻类代谢的限制性营养盐。采用综合营养状态指数法评价了湖水富营养化程度，结果显示云龙湖水体呈轻度富营养化状态，结合近10年来的评价结果分析了云龙湖水体富营养化的变化趋势。     

邛海水质变化趋势及保护对策研究

本文通过对邛海流域现状污染源进行调查,邛海流域COD、氨氮、总氮和总磷产生量分别为5892.1t/a、995.6t/a、2888.2t/a和1105.1t/a,污染负荷主要来自面源污染.通过2002 ～ 2011年邛海水质监测数据分析,邛海水质近10年总体保持Ⅱ～Ⅲ类,处于中营养状态,2004～ 2006年水质相对较差,2006年以后水质逐渐好转.总磷、总氮是邛海主要污染因子,海河口是邛海污染最严重的区域.为实现邛海水质和流域生态环境持续改善,从产业结构优化、流域污染源治理、生态保育和流域生态环境综合监管等方面提出对策建议.     

重庆渝北双龙湖综合治理与工程实践

城市水景水体的修复和保持是水资源保护与可持续利用研究中的热点之一，重庆市双龙湖是典型的城市水景水体，治理前富营养化状况严重。双龙湖治理采取了综合整治的方案，包括污水截流工程、雨水截流及净化工程、湖水复氧循环工程、湖水的生态治理工程和污泥固化工程等。截断外源污染，抑制内源污染，有效的控制了水体的富营养化。经过治理，双龙湖水体水质明显提高，由治理前的劣Ⅴ类水质恢复到Ⅳ类水质，满足景观水要求。双龙湖水环境综合整治为我国，特别是三峡库区众多的城市水体的修复和保持积累经验，为城市水景水体富营养化的防治提供技术和方法上的借鉴。