地理学报 ›› 2013, Vol. 68 ›› Issue (5): 651-660.doi: 10.11821/xb201305007

• 地貌与第四纪 • 上一篇    下一篇

2000-2012年中国北方海岸线时空变化分析

徐进勇, 张增祥, 赵晓丽, 温庆可, 左丽君, 汪潇, 易玲   

  1. 中国科学院遥感与数字地球研究所, 北京 100101
  • 收稿日期:2012-12-14 修回日期:2013-03-14 出版日期:2013-05-20 发布日期:2013-07-22
  • 作者简介:徐进勇(1982- ), 男, 中国科学院遥感与数字地球研究所, 博士生。主要从事土地利用变化及其生态环境影响研究。E-mail: xu_jy@irsa.ac.cn
  • 基金资助:

    国家“973”项目(2010CB95090102)

Spatial-temporal analysis of coastline changes in northern China from 2000 to 2012

XU Jinyong, ZHANG Zengxiang, ZHAO Xiaoli, WEN Qingke, ZUO Lijun, WANG Xiao, YI Ling   

  1. Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China
  • Received:2012-12-14 Revised:2013-03-14 Online:2013-05-20 Published:2013-07-22
  • Supported by:

    National Project 973, No.2010CB95090102

摘要: 利用遥感和GIS 技术获取了中国北方“三省一市”2000 年、2005 年、2008 年、2010年、2011 年与2012 年共6 期大陆海岸线的时空分布情况;采用网格法计算了各个时期海岸线的分形维数;分析了海岸线时空变化特征、海岸线长度变化与分形维数变化之间的关系,以及海岸线动态变化的原因。2000-2012 年,研究区海岸线长度持续增加,总共增加了637.95km,年均增加53.16 km。从区域上看,以天津市与河北省所在的渤海湾区域海岸线变化最强烈;从时间过程上看,2008 年后海岸线长度进入快速增长时期,其中2010-2011 年是海岸线长度变化最剧烈的时期,变化强度为2.49%。2000-2012 年研究区海岸线的分形维数不断增大,其中渤海湾区域海岸线分形维数变化最剧烈;历史海岸线的长度与分形维数之间存在较好的线性关系,相关系数为0.9962;通过对大量海岸线动态引起的整体海岸线长度变化与分形维数变化的统计分析研究表明,在大多数情况下,局部海岸线长度增大(或缩减) 会导致整体海岸线分形维数增大(或减小),并且呈正比例变化。从2000-2012 年各时段海岸线动态对应的各类沿海工程的面积汇总情况来看,港口建设、渔业设施建设以及盐场建设分别占前三位,人类工程建设是中国北方海岸线变化最主要原因;与人类活动影响相比,自然变化如河口淤积与侵蚀对海岸线影响比较小。

关键词: 海岸线, 分形维数, 遥感, 时空变化

Abstract: This study examined the spatial distribution of the continent coastline in northern China using remote sensing and GIS techniques, and calculated the fractal dimension of the coastline by box-counting method, with a time span from 2000 to 2012. Moreover, we analyzed the characteristics of spatial-temporal changes in the coastline's length and fractal dimension, the relationship between the length change and fractal dimension change, and the driving forces of coastline changes in northern China. During the research period, the coastline of the study area increased by 637.95 km, at an annual rate of 53.16 km. On the regional level, the most significant change of coastline length was observed in Tianjin and Hebei. Temporally, the northern China coastline extended faster after 2008. The most dramatic growth was found between 2010 and 2011, with an annual rate of 2.49%. The fractal dimension of the coastline in northern China was increasing during the research period, and the most dramatic increase occurred in the Bohai Rim. There is a strong positive linear relationship between the historical coastline length and fractal dimension, with the correlation coefficient being 0.9962. Through statistical analysis of a large number of local coastline changes, it can be found that the increase (or decrease) of local coastline length will, in most cases, lead to the increase (or decrease) of the whole coastline fractal dimension. Civil-coastal engineering construction was the most important factor driving the coastline change in northern China.

Key words: coastline, fractal dimension, remote sensing, spatial-temporal change, northern China