宁夏银川湿地现状及保护对策     

吕金虎 《湿地科学与管理》2014,(4):32-35

在对银川市湿地资源调查的基础上,分析了银川市湿地面积、类型、区域分布特点,总结了湿地保护管理的现状和存在的问题,提出了湿地保护管理的措施和对策,为银川市湿地保护管理和合理利用提供参考。  相似文献   

浅谈阿尔泰山湿地保护与可持续利用     

阿勒泰·塔依巴扎尔  王勤 《湿地科学与管理》2014,(4):42-44

阿尔泰山分布着众多的河流、湖泊、沼泽等湿地,蕴育了我们赖以生存的额尔齐斯河和乌伦古河。由于各种原因和历史变革,湿地退化已不容忽视,但目前尚未失去自我修复能力。依据阿尔泰山湿地保护与可持续利用存在的问题和制约因素,应尽快建立机构、明确职责、加强湿地教育科研和执法力度,采取实施退耕、退牧还湿、生态补水、人工恢复等措施,保护与合理利用阿尔泰山珍贵的湿地资源,为阿勒泰地区乃至新疆经济社会的可持续发展做出贡献。  相似文献   

基于HJ-1 CCD数据的九龙江口湿地资源监测     

余夏梦  汪小钦  周小成  陈芸芝 《湿地科学与管理》2014,(4):56-60

以福建九龙江口地区为研究区域,利用2008年和2012年的国产环境一号(HJ-1)CCD数据,综合利用监督分类、非监督分类和知识规则相结合的方法对湿地进行分类和专题提取。结果表明:与2008年相比,2012年九龙江口湿地总面积有所减少。天然湿地中河流的面积减少,主要转为滩涂、红树林和其他。养殖场的面积增加最多,主要由农田、河流和其他转化而来;而农田的面积减少最多,主要转为养殖场、林地和其他。快速城市化对九龙江口的湿地影响很大。  相似文献   

盐城世界生物圈保护区十年评估与启示     

李琴  陈家宽 《湿地科学与管理》2014,(4):67-70

中国自然保护区建设已有近60年的历史,并成为我国最有效的保护生物多样性网络。如何对已建自然保护区,特别是快速演变的湿地类型自然保护区的保护成效进行评估已成为我们面临的最紧迫任务之一。中国人与生物圈国家委员会对其认定的保护区开展评估已有多年,但政府部门和学术界对此知之甚少。以中国人与生物圈国家委员会对以盐城世界生物圈保护区十年评估为案例,介绍了该组织对自然保护区保护成效评估方式与过程、特点,提出了我国湿地自然保护区今后如何开展保护成效评估的3点启示:1我国自然保护区事业必需转型到重建设和保护成效的新阶段;2对保护对象的科学研究和长期监测是提高保护成效的重要基础;3要特别重视滨海湿地的保护。  相似文献   

基于EI规划的东湖湿地公园生态旅游综合评价     

沈德福  张光英  李美秀 《湿地科学与管理》2014,(3):26-30

以EI理念规划的湿地公园更注重生态保护,可科学地保护湿地和可持续利用湿地,实现湿地公园的生态功能服务价值。以宁德东湖湿地公园的EI生态开发为研究对象,采用层次分析法从生态环境、生态旅游资源、生态旅游开发等方面对湿地生态开发旅游进行分类定量评价。通过构建基于多因子的湿地公园生态旅游综合评价体系,对各评价因子进行分类计算及定量分析,比较东湖湿地生态环境与其他湿地公园的差异,研究结果可为闽东地区的湿地公园生态旅游规划提供理论参考和实践依据。  相似文献   

广西湿地生态系统的保护与恢复     

张丽娜  谭伟福  银星果  王双玲  黄永 《湿地科学与管理》2014,(3):35-38

广西现有湿地75.43万hm²,占国土总面积的3.18%。湿地类型有滨海、库塘、河流、湖泊等5类24型。广西湿地资源丰富、类型独特、湿地生态系统多样。在全国第二次湿地资源调查的基础上,阐述了广西湿地生态系统的组成及特征,分析了湿地保护与受威胁现状,提出湿地生态系统保护与恢复的主要对策和措施。  相似文献   

新疆伊犁河流域湿地保护与管理     

加尔肯居马肯·爱特  米利根 《湿地科学与管理》2014,(3):43-45

伊犁河流域是新疆境内独特的湿岛,是我国17个优先保护的生物多样性关键地区之一。由于水土资源的大规模开发、工业化和城镇化进程的加速,伊犁河流域湿地受到了严重破坏。分析了伊犁湿地保护面临的主要问题,提出了伊犁河湿地资源保护、开发和合理利用的可持续发展对策。  相似文献   

河北省白洋淀地区中全新世丽蚌动物群及其生态环境意义   总被引：2，自引：0，他引：2       下载免费PDF全文

郭书元  詹伟  王强 《古地理学报》2014,16(3):335-346

丽蚌动物群的分布受气候和地理环境控制,研究地层中的丽蚌动物群可以恢复当时的古环境。在河北省白洋淀地区全新统共发现13种珠蚌科(Unionidae)的化石,属 Lamprotula-Cuneopsis-Unio 组合,称为白洋淀丽蚌动物群。该动物群与长江中下游流域太湖、鄱阳湖、洞庭湖及其周围水域的现代丽蚌动物群和山东王因、河南西水坡中全新世丽蚌动物群相比,虽然分异度低,但其组合特征相似,同属东洋界中印亚界动物地理区,生活于亚热带湿热气候下的河湖环境中。推测白洋淀丽蚌动物群的生活时代应为中全新世早期,当时北亚热带和东洋界的北界应在白洋淀以北的京津-河套一带。  相似文献   

Variability of the hemocyte parameters of cultivated mussel Mytilus galloprovincialis (Lmk 1819) in Sabaudia (Latina,Italy) coastal lagoon     

《Marine environmental research》2013

The Sabaudia's lake consists of a protected coastal lagoon, located in the central Italy, historically characterized by recurrent mortality events of marine fauna during warmer months. A field study was monthly conducted on mussels Mytilus galloprovincialis cultivated inside the lagoon, measuring hemocyte parameters as total circulating count (THC), viability (HV), spreading and oxidative response to in vitro phagocytosis stimulation. A depression of the immune response was observed during the spring season, as indicated by higher values of hemocyte circularity and lower luminescence levels related to respiratory burst, also associated to modulation of THC and HV. The water temperature and the oxygen concentration appeared as the major environmental factors having influence on the phagocytosis activity. Therefore, the hemocyte variations have been intended as early danger signal to evaluate the immunodepression induced by the environmental stressors which could reveal in advance the development of critical situations for mussel survival.  相似文献   

Impact of climate change on wetland ecosystems: A critical review of experimental wetlands     

Shokoufeh Salimi  Suhad A.A.A.N. Almuktar  Miklas Scholz 《Chemie der Erde / Geochemistry》2010

Climate change is identified as a major threat to wetlands. Altered hydrology and rising temperature can change the biogeochemistry and function of a wetland to the degree that some important services might be turned into disservices. This means that they will, for example, no longer provide a water purification service and adversely they may start to decompose and release nutrients to the surface water. Moreover, a higher rate of decomposition than primary production (photosynthesis) may lead to a shift of their function from being a sink of carbon to a source. This review paper assesses the potential response of natural wetlands (peatlands) and constructed wetlands to climate change in terms of gas emission and nutrients release. In addition, the impact of key climatic factors such as temperature and water availability on wetlands has been reviewed. The authors identified the methodological gaps and weaknesses in the literature and then introduced a new framework for conducting a comprehensive mesocosm experiment to address the existing gaps in literature to support future climate change research on wetland ecosystems. In the future, higher temperatures resulting in drought might shift the role of both constructed wetland and peatland from a sink to a source of carbon. However, higher temperatures accompanied by more precipitation can promote photosynthesis to a degree that might exceed the respiration and maintain the carbon sink role of the wetland. There might be a critical water level at which the wetland can preserve most of its services. In order to find that level, a study of the key factors of climate change and their interactions using an appropriate experimental method is necessary. Some contradictory results of past experiments can be associated with different methodologies, designs, time periods, climates, and natural variability. Hence a long-term simulation of climate change for wetlands according to the proposed framework is recommended. This framework provides relatively more accurate and realistic simulations, valid comparative results, comprehensive understanding and supports coordination between researchers. This can help to find a sustainable management strategy for wetlands to be resilient to climate change.  相似文献