摘要
基于海岸地貌基本概念界定填海造地范围在现代海岸带平均高潮位以下。基于多期遥感影像,利用单波段影像提取及影像二值化处理辨识深圳填海造地的动态变化数据。根据1978-1985年、1986-1994年、1995-1998年、1999-2004年4个时间段的填海数据解析结果,分析了在深圳这一典型的快速城市化地区城镇化进程中填海造地的起始阶段、快速阶段、增速阶段到理性阶段的阶段性过程。在此基础上,对深圳填海造陆的驱动力进行分析,建立了填海造地的综合驱动框架模型;归纳了区位因素、政策因素、社会经济因素和自然生态因素四大填海驱动力,并结合深圳的城市发展进程与深圳填海的不同阶段对每一因素的驱动作用进行了剖析。
In this paper, the scope of land reclamation is defined to be below the mean high tide level of the coastal zone. The dynamic changes of reclamation in Shenzhen have been analyzed by extracting single-band images and converting binary Images, on the basis of a series of remote sensing images（MSS,1978）, Landsat TM（1986）, Landsat TM（1995）, Landsat TM（1999）, Spot（2004）. The reclamation rate of 1978-1985 is 146.31 hm^2/a, that of 1986-1994 is 304.55 hm^2/a, 1995- 1998 is 337.16 hm^2/a, and 1999-2004 is 273.59 hm^2/a. The reclamation rate in Shenzhen was fast, ecperiencing a faster to the fastest period, but it became slowed down recently. This paper not only shows the different rates and distributions, but also discusses the different roles of the four periods of land reclamation in Shenzhen. As the reclamation may induce great changes to the coast zone, it requires serious considerations. Therefore, the driving forces of the dynamic change are analyzed combining with the progress of urbanization of Shenzhen city in the period of 1979- 2004. This paper establishes a comprehensive driving forces system of reclamation, including four aspects of change： location, policy, socioeconomy and coastal natural conditions （environmental problems）. Shenzhen is near Hong Kong, which is the key factor to improve the reclamation projects of Shenzhen and also the driving force for the development of Shenzhen city in the early years. The changes of the policy and laws of land use in China since 1979 make great profit of reclamation, but the laws of protecting against destroying coastal zone limit the projects of reclamation. In the regression of relationship between the reclamation and the economic factors, it is found that the growth of population improves the reclamation, but the growth of infrastructure investment decreases the reclamation. The coastal natural conditions limit reclamation project. The reclamation has affected the environment of Shenzhen and Hong Kong, limited by the problems of reclamation, the growth of reclamation in Shenzhen has decreased. The system of Shenzhen reclamation is complex but evolves to a more scientific direction.
出处
《地理科学进展》
CSCD
北大核心
2009年第4期584-590,共7页
Progress in Geography
基金
深圳国土资源调查项目
关键词
深圳
填海造地
动态变化
驱动力
Shenzhen
reclamation
dynamic change
driving force
