地理科学 ›› 2004, Vol. 24 ›› Issue (5): 610-615.doi: 10.13249/j.cnki.sgs.2004.05.610

• 论文 • 上一篇    下一篇

苏北盐城海岸带景观格局时空变化及驱动力分析

欧维新1,2, 杨桂山1, 李恒鹏1, 于兴修1,2   

  1. 1. 中国科学院南京地理与湖泊研究所, 江苏 南京 210008;
    2. 中国科学院研究生院, 北京 100039
  • 收稿日期:2003-09-29 修回日期:2004-02-08 出版日期:2004-09-20 发布日期:2004-09-20
  • 基金资助:
    中国科学院全国优秀博士论文基金与江苏省"333工程"基金联合资助.

Spatio-temporal Variation and Driving Forces of Landscape Patterns in the Coastal Zone of Yancheng, Jiangsu

OU Wei-Xin1,2, YANG Gui-Shan1, LI Heng-Peng1, YU Xing-Xiu1,2   

  1. 1. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, Jiangsu 210008;
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100039
  • Received:2003-09-29 Revised:2004-02-08 Online:2004-09-20 Published:2004-09-20

摘要: 利用RS、GIS手段研究分析了盐城海岸带景观格局的时空变化及其驱动力因子。结果表明:在1983~2000年间,景观斑块数量倍增,平均斑块面积大幅度减小,景观基质构成由比重势均的人工、自然景观变成了以耕地、水域为主的人工景观;海岸带景观异质性整体上有减弱的趋势,主要表现为多样性指数降低、破碎化指数增大、分维数减小,而在空间和类型上又有异于整体的表现;自然地理条件、人口增长、经济收益差异、政府政策是导致盐城海岸带景观格局变化及其区域差异的主要驱动力;随着滩涂围垦利用等人类干扰的不断增加,海岸带景观生态环境保护与经济开发之间的矛盾将愈发突出。

Abstract: Variation of landscape pattern can provide key information of human activity effects on landscape and consequently has received much attention in recent years. Most of the past works mainly focused on the whole landscape pattern rather than the inner variation of landscape, and on urban area, watershed, forest and wetland rather than coast as objects. In China, the analyses of landscape change in the Liaohe River delta, the Yellow River delta and the Zhujiang River delta have been conducted at a spatial scale of county although some works have been done concerning the features of coastal landscape at a spatial scale of nation. The study area in this paper, the coastal zone of Yancheng (CZY), lies in the middle of Chinese coastal zone, where shoal area of 4 570 km2 can be found. CZY is one of the best-preserved land resources in Jiangsu Province and also in china. Moreover, it is a base of biodiversity conservation. With the population growth, there has been increasingly serious conflict between reclamation and biodiversity conservation in this region. In order to analyse the changes of landscape pattern, four sections in CZY have been selected from north to south and they are the section of salt industry and aquatic production in the abandoned Yellow River delta; the section of breed aquatics and rare bird conservation in Sheyang County; the section of agricultural and elk conservation in Dafeng City; and the section of integrated agricultural development in Dongtai City. The paper mainly deals with the spatial-temporal variation and driving force of the landscape pattern of CZY with the technique of remote sensing and GIS employed. The results indicate: (1) In the 17 years (1983-2000), the number of patches increased significantly but the average area of patch decreased remarkably. The landscape matrix had changed from the station that the natural landscape and the artificial landscape were on an equality to just the latter were dominant. (2) Coastal landscape heterogeneity degraded, resulting in the decrease of diversity index and increase of fractal dimension index, dominance index and fragmentation index. As far as the landscape heterogeneity in the different regions and different landscape types concerned, there was another condition different from the whole coast landscape. (3) It was by the main driving forces of natural geographical condition, population increase, and economic income and government policy that the variation and regional discrepancy of coastal landscape patterns in Yancheng were induced. (4) With the increasing disturbances, such as inning and reclamation of the coastal shoal, the conflict between exploitation and ecological environment protection would be more and more serious. That means a deeply study on the sustainable land use in the coast zone is in need.

中图分类号: 

  • P748