19 research outputs found

    Some issues about the impacts of sea level rise on mangroves in China

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    海平面上升对分布在海岸交错带的红树林有着直接的影响。温度、波浪与潮汐、底质与盐度等因素控制着红树林的分布。海平面上升引起潮汐浸淹程度增加影响红树林在潮滩上的横向分布,红树林向陆地一侧迁移。在中国,海平面上升与海堤的阻隔共同威胁着红树林的生存,红树林主要分布地的小潮差增加了红树林对海平面上升的敏感性。中国红树林对海平面上升异常敏感。目前国内关于海平面上升对红树林影响的研究主要存在的问题是:缺乏从红树林群落结构角度研究海平面上升与海堤对红树林的影响,红树林地面高程变化研究薄弱,亟需建立一个红树林应对海平面上升的监测网络——地面高程水平标志层监测网络。It is universally acknowledged that global average sea level is rising and mangroves existing in coastal zones would suffer disturbance of sea level rise.Distributions of mangroves are controlled by main factors including temperature,wave,tide,substrate and salinity.Increased inundation caused by sea level rise would impact the transverse distribution of mangroves on the tidal flat,and mangroves are obliged to transgress inland.In China,sea level rise together with seawalls is threatening the survival of mangroves and small tidal range increases the susceptibility of mangroves to sea level rise.Mangroves of China are extremely sensitive to sea level rise.Presently,there exist several problems about the impacts of sea level rise on mangroves of China.(1) Little research concentrates on the impacts of sea level rise and seawalls on mangroves from the perspective of mangrove community structure.(2) Changes of mangrove ground elevation are poorly understood,which are usually compared with local rises in sea level to predict the effects of sea level rise on mangroves.(3) A monitoring network based on surface elevation table-marker horizon system is urgently needed to observe how mangroves of China respond to sea level rise.国家自然科学基金项目(41276076)资

    DNA分析によるロシア・アルタイ山脈ベルーハ氷河中のマツ属花粉の種同定

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    第6回極域科学シンポジウム分野横断セッション:[IB2] 地球環境変動の解析と地球生命システム学の構築11月19日(木) 統計数理研究所 セミナー室1(D305

    DNA analysis of 470-year-old Pinus pollen grains preserved in a Russian glacier

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    第7回極域科学シンポジウム/横断セッション:[IG] アイスコア研究—これまでの成果と今後の展開12月2日(金) 国立極地研究所 2階大会議

    Vegetative and reproductive characteristics of viviparous mangroves

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    红树植物是热带、亚热带海湾河口区最重要的初级生产者。在与环境的长期相互选择下,红树植物形成了独特的生长适应和繁殖适应。红树植物分为真红树植物和半红树植物。真红树植物专一性地生长于潮间带。红树科(Rhizophoraceae)的木榄属(Bruguiera)、秋茄属(Kandelia)、红树属(Rhizophora)、角果木属(Ceriops)是典型的真红树植物。具有与新生叶片数量一致的托叶和显胎生胚轴是红树科红树植物的突出特点。其中,托叶和叶片的掉落数量是指示植物叶片生长和更新状况的有效证据;显胎生繁殖方式的特点是揭示红树植物生活史对策、群落演替、生物进化等方面的重要途径。 本研究以植物界最典...Mangroves are the most important primary producers in tropical and subtropical gulf estuary. Under the long-term mutual selection with environment, mangroves gradually formed the specific vegetative and reproductive adaptations. Mangroves are classified into two groups: true mangroves and mangrove associates. True mangroves possess complete fidelity to the mangrove environment; that is, they occur...学位:理学硕士院系专业:生命科学学院_生态学学号:2162011115243

    Mangrove Ecotourism and Environmental Education in Dongzhaigang of Hainan

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    通过对红树林资源最丰富的东南亚国家及我国香港和台湾红树林生态旅游现状调查,总结了红树林生态旅游及环境教育的特点、成功案例和创新理念。在海南国际旅游岛开发及《海口市人民代表大会常务委员会关于加强东寨港红树林湿地保护管理的决定》的大背景下,结合海南岛和海口市的实际情况,以海南东寨港红树林为对象,提出红树林生态旅游可行性建议,完善我国红树林生态旅游的发展模式。An investigation of current status of mangrove ecotourism in Southeast Asian countries with the richest mangrove resources,Hong Kong and Taiwan was conducted,the characteristics of mangrove ecotourism and environmental education,successful cases and innovative conception were reviewed.In the context of the development of Hainan International Tourism Island and the "Decision on strengthening the protection and management of Dongzhaigang mangrove wetland",considering the actual situation of Hainan Province and Haikou City and taking the Dongzhaigang mangrove forest as a case study,some feasible suggestions for mangrove ecotourism were proposed to improve the development model of mangrove ecotourism in China
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