【作者】 陆培东；

【导师】 刘泽纯； 喻国华；

【作者基本信息】 南京师范大学 ， 自然地理学， 2002， 博士

【摘要】 海岸带是环境变化的敏感地带，在自然和人类双重力量的影响作用下，海岸带的资源环境问题日益突出。认识海岸带系统的自适性和对环境变化响应的开放性，是海岸地貌学研究的重要课题。 潮汐汊道是海岸带系统的一个重要子系统，对环境变化尤为敏感。本文从动力地貌系统的角度，研究了潮汐汊道系统各单元在维持系统稳定过程中相互作用和适应的物理过程，分析了环境变化对系统的影响以及系统各单元对环境变化的响应，并提出潮汐汊道资源可持续利用的原则、方式和途径。 首先进行了潮汐汊道系统内部特征的研究。通过潮汐汊道形态与动力相互作用的特点和地貌结构与水动力及输沙特征的分析，论述系统各单元相互影响、相互作用的紧密联系，分析了潮汐汊道系统维持稳定的自适应性。在现代动力作用和地貌形态组合研究基础上，进行了潮汐汊道动力地貌学分类。并将具有潮汐汊道地貌形态与动力相互作用特征的，江苏岸外辐射状沙洲区部分潮流脊间水道作为一种特殊的潮汐汊道类型，研究其发育的地貌基础、动力环境和动态趋势。 在系统开放性特征研究中，从系统与外部环境的联系方面研究了潮汐汊道系统的环境响应。分别利用海岸动力地貌、数学模型和物理模型等手段，对沙坝泻湖型、溺谷(河口湾)型和淹没型潮汐汊道进行实例研究，具体分析各种类型潮汐汊道的现代动力地貌过程和对环境变化的响应。 在系统内部特征和开放性特征研究基础上，进行了潮汐汊道资源可持续利用的研究。总结了潮汐汊道资源的特征和可持续利用中存在的主要问题。通过资源承载力的分析，提出利用潮汐汊道资源的原则、利用现状评价和可持续利用障碍诊断的方法，以及提高资源可持续利用水平的途径。更多还原

【Abstract】 Coast zone is the sensitive belt of environment change. Under the influence both of nature and human being, the problem of resource and environment of coast zone is standing out increasingly. It is an important question for discussion of coastal geomorphology to research the self-adaptability and the response to environment of the coast system.Tidal inlet is an important subsystem of coast system. It is very sensitive to environment change. From the point of view of dynamic geomorphology system, physical process of interaction and adaptation of every cell of tidal inlet during keeping stabilization of system is studies, influence on system of environment change and response to environment of tidal inlet are analyzed, how to make sustainable use of resource of tidal inlet is discussed finally.At first, characteristic of every cell inside tidal inlet is studied. Based on the analysis of the characteristic of interaction between form of tidal inlet and dynamic and the configuration of landform and the characteristic of dynamic and sediment transportation, relation of inter-affection and interaction among every cell of tidal inlet is discussed, self-adaptability of keeping stabilization is analyzed. Based on the study of modem dynamic and combination of landform, tidal inlet is classified by dynamic geomorphology system. The waterway between tidal ridge of radiation sandbank besides Jiangsu coast has characteristic of interaction between landform and dynamic, so this kind of waterway is regarded as a special sort of tidal inlet, the landform foundation of development and dynamical surrounding and trend of evolution are studied.During the study of opening characteristic of system, response to environment is studied from relationship of system and outside environment. Using the method of coastal dynamic geomorphology and mathematic model and physical model, the examples of three kinds of tidal inlet such as sand dam and lagoon type and drown vale type and submerged type are studied separately.How to sustainable use the resource of tidal inlet is studied finally. The characteristic of tidal inlet resource and the main question during sustainable use are summarized. Through the analyses of carrying capacity of resource, the principle of tidal inlet resource usage is put forward, actuality of usage is estimated, the obstacle diagnostic method of sustainable usage is brought forward, the approach of how to sustainable use resource is discussed.更多还原