第三部分海陆对比300000年以来的海平面变化

对于海岸演化,海平面变化是最重要的控制因素之一。300000年以来海平面历史的建立,对于理解中、晚第四纪年代学,海岸演化对现代海岸特征的影响和测量沿海地区第四纪新构造运动都是特别重要的。这个专题讨论会的目的就是根据新发展的测年手段和具有不同构造特征的各种沿海地带地貌和地质的调查,建立海平面波动的年代和幅度以     

The application of geographic information technology to coastal geomorphology

With the development of modern oceanic observation technologies,coastal survey data have been experiencing a substantial growth.The integration management of the data from different disciplines,different sources and different formats has become a major research field in coastal geomorphology by using Geographic Information System (GIS).This paper puts forward a new methodology framework of GIS techniques in coastal ocean geomorphology,including data acquisition,process,analysis,and representation.It focuses on some major GIS techniques to study the land-ocean interaction mechanism,such as spatial analysis,submarine topography model and three-dimension (3D) visualization,and apply its result to coastal urban planning,harbor site selection and geomorphology environment about coral reef and islands on the continental shelf.The case studies cover the whole coastal ocean to serve the social community,economical development and diplomatic rights for decision-making all round in the coastal zone.The research shows clearly that the application of coastal multi-source geospatial platform has changed the traditional coastal geomorphology science dramatically from its research scope,fields and methods,however,as made clear in this paper,extracting accurate information from remote sensing data and GIS databases for coastal geomorphological applications is a nontrivial challenge that requires the combined knowledge and skills of information scientists and geomorphologists.     

近年来那些经典的“双台风”

台风是地球上破坏性最强的一种天气现象。我国是世界上遭受台风影响最严重的几个国家之一。我国南起华南地区,北至辽东半岛的漫长沿海地带常受到台风袭击,而且很多内陆省区也会直接或间接地受到它们的影响。当台风移近或登陆时,常给这些地区的工农业生产和人民生命财产造成严重损失,甚至造成巨大灾难。     

地质显微镜下看香港

香港位于中国南方珠江口的东南侧,南临南海,北边与广东省深圳经济特区接壤。陆地面积为1104平方公里,包括与大陆相连的新界和九龙半岛,以及大屿山岛、香港岛等大小200多个岛屿。香港是典型的岛海环境,拥有绵长的海岸线,地势山峦起伏,近45%的陆地高出海平面100米以上,只有零星的平原分布于沿海地带。     

中国沿海淡水资源须优化利用

本文讨论今后中国沿海地带经济高速发展中,淡水资源可能成为制约因素。对这个问题从水量和水质两方向加以分析。提出解决淡水资源的战略设想;建立淡水资源和排污收费制度;合理调配淡水资源,突出城市用水;合理布局,水资源优化利用;区域规划,共同协作开发、利用淡水资源;开辟河口、海湾水库的研究;加强城镇环境建设,落实环境投资。     

中国沿海淡水资源须优化利用

本文讨论今后中国沿海地带经济高速发展中，淡水资源可能成为制约因素。对这个问题从水量和水质两方面加以分析，提出解决淡水资源的设想：建立淡水资源和排污收费制度；合理调配淡水资源，突出城市用水；合理布局，水资源优化利用；区域规划，共同协作开发，利用淡水资源，开辟河口，海湾水库的研究；加强城镇环境建设，落实环境投资。     

江苏沿海地带海洋产业空间集聚变动研究

产业空间集聚是经济活动最突出的地理特征。运用赫芬达尔——赫斯曼指数发现,江苏沿海地区海洋化工业、海洋生物医药业、海洋交通运输业在空间上较为集中,尤其海洋生物医药业,赫芬达尔指数高达0.978;而海洋渔业、海洋盐业在空间上则较为分散.专业化指数分析结果则表明,不同海洋产业在不同地区的集聚变动情况各异。导致空间集聚变动的主要原因是资源禀赋、发展基础和发展条件的变化。     

中国东部沿海地带及邻区的环境工程地质与可持续发展研究

沿海地带是海陆交接的边缘地带, 是-个多功能的自然综合体, 蕴藏着丰富的自然资源, 开发潜力很大。但沿海地带自然环境复杂多变, 生态环境极为脆弱, 而沿海地带的开发利用又涉及许多部门和学科, 在开发过程中已引起若干环境工程地质问题, 因此, 加强沿海地带资源开发的环境工程地质研究有极为重要的意义。本文分析了我国沿海地带资源开发过程中引起的主要环境工程地质问题, 采用BP神经网络模型对沿海地带及其邻区的工程地质环境质量进行了评价与区划。在此基础上, 对中国沿海地带可持续发展方略进行了探讨。     

Residues of organochlorine pesticides in intertidal flat surface sediments from coastal zone of Jiangsu Province,China

Sixteen surface sediment samples were collected and analysed to evaluate the residues of organochlorine pesticides(OCPs) from intertidal flat in Jiangsu Province. Overall, 22 OCPs were detected with total concentrations of OCPs ranging widely from 0.96 to 12.14 ng/g(dry wt). Total hexachlorocyclohexane(HCH) and total dichlorodiphenyltrichloroethane(DDT) levels varied from 0.01 to 0.67 ng/g and from 0.23 to 4.85 ng/g, respectively. DDTs were the predominant compounds. The dominance of β-HCH indicated a history of HCH pollution. According to the ratios of( p, p'-DDD+ p, p'-DDE)/ p, p '-DDT and o, p ′-DDT/ p, p ′-DDT, new input of DDTs did not occur in most sites, and the main sources were historical usage of technical DDTs. OCPs such as dieldrin, endrin, p, p ′-DDD, and p, p ′-DDT exceeded the effects range low, showing adverse biological effects that would occasionally occur at some sites of the study area.