保护湿地资源维护生态环境

1湿地的定义 1971年在伊朗的拉姆萨尔签署了著名的（湿地公约）,它是第一份、也是目前推一针对一种特定生态系统的全球性公约。（湿地公约）关注的是受威胁最严重的一类生境,即湿地。根据（湿地公约）的定义,湿地系指不问其为天然或人工,长久或暂时之沼泽地、湿源、泥炭地或水域地带,带有或静止或流动或为淡水、半成水或咸水水体者,包括低潮时水深不超过6m的海域。     

中国湿地现状综述

湿地是重要的自然资源,对人类生存起着重要作用。本文综述了湿地的含义、功能与 价值、中国湿地的特点与现状,以促进中国湿地的可持续发展与利用。     

新疆市政排水区湿地的形成与应用研究

分析了新疆城市与园区排水区下游市政排水湿地的成因,结合湿地的概念,划分出不同类型。结合湿地在新疆的应用实例,说明市政排水区湿地区生态演替特征,并提出了与湿地应用有关的管理与配套措施。     

新疆艾比湖湿地开发及环境效益分析

以新疆典型湖泊湿地艾比湖为主要研究区,并与东部洪泽湖、中部鄱阳湖和西部青海湖在生态系统服务功能、生态经济价值等方面进行了比较。由于气候、资源特点不同,各个湖泊湿地的开发方式和开发力度不同,使湖泊湿地的环境效益不同,产生了一系列生态环境问题,由此提出了湖泊湿地的开发利用建议。     

湿地生态系统碳平衡及碳核算方法综述

湿地作为一种特珠的生态系统,在固碳方面也起到了举足轻重的作用.本文首先探讨了湿地生态系统的碳循环和碳平衡过程,然后介绍了当前国内外普遍运用的几种碳汇计童方法,包括生物量法、静态箱法、动态箱法、GIS法、同位素法、涡旋相关法、涡度协方差法等,并对这些方法的优缺点进行了分析,对未来湿地碳平衡及碳核算方法的研究进行了展望.     

我国红树林湿地保护区的现存问题及开发对策

国际重要湿地公约《拉姆萨尔公约》中将湿地定义为＂不仅指所有的天然的、人为的、永久的、暂时的沼泽、潮湿地、泥炭地等静止的或流动的水体,也包括所有的咸水、半咸水、淡水以及低潮线以下不超过6米的地域。＂湿地作为介于陆地生态系统与水生生态系统之间的过渡生态系统,其独特性和多功能性具有很高的生态价值、经济价值和社会价值。它的作用引起了世界的普遍重视,各国都在加强对其的保护管理工作。     

重庆市澎溪河湿地自然保护区湿地植物资源研究

以重庆市澎溪河湿地自然保护区为研究对象,对保护区内的湿地植物资源进行了全面调查.结果表明,保护区内湿地植物共有34科67属100种,主要的植被类型有4个植被型及宽叶香蒲群落(Typha latifolia )、水蓼群落(Polygonum hydropiper)等17个群系,并分析了植被分布特征和新生消落带的影响.鉴于湿地植物对生物多样性的保护和蕴含的巨大生产力,提出了湿地植物保护和利用的对策.     

湿地生态与"龙"文化

每年二月二日是一个特殊的日子，可能搞自然科学、特别是湿地生态的学者会告诉你，这一天是“国际湿地日”。但中国老百姓还会给你另外一个答案：“二月二，是龙抬头的日子”。农历二月二日，是中国民间的一个源远流长的传统节日，这一天，农民们要用谷物的灰烬在地上画龙、或互送猪头、或把酒相聚，呼唤那善于兴风布雨、普降甘霖的神龙快快苏醒，从而祈求春雨萌动、润泽大地，五谷丰登。二月二日，只是一个巧合，那湿地与龙文化有没有联系呢？前者是自然界的一种水陆交汇的生态类型，后者是华夏民族世代崇拜的动物图腾，二者似乎风马牛不相…     

青海省湿地类型保护区现状与发展对策

文章从青海高原湿地资源现状和湿地类型自然保护区发展的角度，分析目前高原湿地保护中存在的问题，提出了今后青海湿地类型保护区发展对策。     

关于保护湿地资源改善环境的思考

阐述了保护湿地的重要意义,结合实际分析了保护湿地工作中亟待解决的实际问题,并提出了切实做好保护湿地工作的对策与建议。     

氮、磷在湿地基质中降解的机理研究

湿地基质被看成是人工湿地处理污水的核心部分,通过科学实验,文章分析了人工湿地运行中氮、磷在沿程方向和纵向的基质中的分布,重点研究湿地基质对于氮、磷的净化作用,有利于进一步理清湿地基质降解氮、磷的机理。     

新疆的生态旅游及其可持续发展研究

新疆旅游资源丰富多彩且具特色，但由于其特殊的地理位置和当地经济条件，这里的旅游业还不发达。随着西部大开发进程的加速，新疆的生态环境必将受到冲击和影响。如何保障生态环境不遭破坏，又在大力开发旅游资源的条件上寻求可持续发展，对此问题，本文在探讨生态旅游的现状利弊的基础上进行了研究。     

湿润区与干旱区典型湖泊湿地对比案例研究

选取东部湿润区与西北干早区典型湖泊湿地--洞庭湖湿地与艾比湖湿地,对其湿地资源特征、湿地生态服务功能及价值、湿地退化的表征和退化湿地生态恢复对策等方面进行了比较研究.通过研究发现,湿润区湖泊湿地资源禀赋优于干早区湖泊湿地,湿润区湖泊湿地与干旱区湖泊湿地均具有较强的生态服务功能和较高的价值,在湿地退化表征方面有共性也有差异,针对不同气候区域的退化湖泊湿地应采取不同的恢复对策.     

Wetland boundary and land-use planning in southern Ontario,Canada

There is a general lack of understanding of wetland processes and a general paucity of scientific research to predict the effects of development on wetland boundary. This paper presents the results of a survey of wetland managers as to how they delineate wetland boundaries, define compatible land uses, and restrict land uses adjacent to wetland boundaries. A major finding from the survey is that 75% of land-use planners and wetland managers failed to identify any compatible land use or restricted land use for development proposals that may affect provincially significant wetlands. The government agencies overwhelmingly lack adequate methodologies and/or criteria to delineate and protect wetland boundaries. The paper closes with a plea to consider dynamic hydrological factors in land-use planning.     

人工湿地植物处理污水的试验研究

为了选择适合在中国四川地区生长的湿地植物，作者在四川省成都市１９９３年１０月２日－１１月１９日的深秋季节进行了湿地系统处理模拟污水的盆栽静态试验，以研究多种湿地植物在自然环境条件下对污染物的去除情况。试验发现，灯蕊草，芦苇，菖蒲这三种植物在１４天内均能去除模拟水样中的ＣＯＤｃｒ，其中，芦苇的去除率为３８％，菖蒲的去除率为４１％，灯蕊草的去除率为４２～４６％。这三种植物同时也能污水的ｐＨ从３．５调节     

潜流型人工湿地实现短程硝化反硝化的探讨

从短程硝化反硝化机理和目前国内外在短程硝化生物脱氮技术方面的进展入手;介绍了影响短程硝化的因素,剖析了潜流型人工湿地系统实现短程硝化的可能性和可行性;最后展望了湿地系统作为生态处理方法的发展方向.     

Wetland development trends in coastal North Carolina,USA, from 1970 to 1984

Coastal wetlands are a valuable resource to North Carolina, USA, representing important habitat for marine organisms and providing flood control areas and buffer zones from marine storms. An analysis of wetland development trends in coastal North Carolina from 1970 to 1984 was conducted using over 3000 files containing 15 years of permitting records. The total amount of coastal wetland area altered due to authorized development under the Coastal Area Management Act (CAMA), the Dredge and Fill Law, and Section 404 of the Federal Water Pollution Control Act is 1740 ha. This represents nearly 2% of the salt marsh wetlands along the coast of North Carolina. The number of permits issued steadily increased during the 1980s; however, the total amount of wetland loss decreased each year. A few large projects in the early 1970s accounted for nearly 70% of all wetland area developed during the 15-year period. Nearly two-thirds of all projects involving wetland destruction involved impacts on high marsh ecosystems. Bulkheads, canals, and filling activities made up 80% of the projects requiring permits; 62% of the permits were issued to private landowners, but this group accounted for only 16% of the losses of wetland area. Utility companies, which accounted for less than 1% of the permits issued, were responsible for 46% of the permitted wetland loss during the 15-year study period. Future studies should address agriculture and forestry practices which are exempt under CAMA laws and therefore their effects on wetland alteration have not been quantified.     

Wetland management: an analysis of past practice and recent policy changes in Ontario

The Ontario Government has recently released its latest Provincial Policy Statement (PPS), which includes a policy concerning wetland protection. This paper uses interviews with key respondents and the results of three separate case studies that examined the former PPS in order to assess the ability of the new policy to improve wetland conservation efforts in Ontario. The case studies include wetland conservation and urban stormwater management in the City of London for the periods 1978-1999 and 1978-2000, respectively. As well, agricultural drainage that occurred in the Township of Zorra for the period 1978-1997 is used to address this management dimension. While progress is evident, the current policy will be difficult to implement effectively because it inadequately deals with the fundamental aspects of management: fragmented jurisdiction, interagency communication, financial arrangements, enforcement, and promoting informed decision making.