海门沿江地区开发适宜性分区研究

区域不合理开发将会引发大量的生态环境问题。要建立开发与保护兼容的空间秩序，区域开发适宜性分区具有十分重要的意义。以海门沿江地区作为研究案例区，借助GIS空间分析技术，通过确定符合区域要求的格网评价单元，利用约束型和引导型指标叠合判断的方法，将案例区划分为鼓励开发、适度开发、适度保护和优先保护区域。结果表明，鼓励开发区域主要集中在城区、港区这类自然基础较好、发展潜力较大而生态约束较低的地区；适度开发区域主要分布在重点中心镇以及一般镇的镇区；适度保护区域主要分布在生态敏感性较高、发展基础和条件一般的地区；优先保护区域则主要为具有重要生态服务功能的地区。并依据开发适宜性分区提出开发建设强度和时序的建议，可为合理布局沿江城镇和产业发展提供科学引导。

REGIONALIZATION OF FEASIBLE DEVELOPMENT IN THE AREA OF HAIMEN ALONG THE YANGTZE RIVER

Irrational exploitation leads to a number of environmental problems,therefore, the feasible devel- opment regionalization of land use is important for setting up a rational spatial order of development and protection. This study takes the area along the Yangtze River in Haimen as a case. The comprehensive car- rying capacity of comparatively exploitation intensity of every grid units in the region is evaluated by analy- zing the elements of regional nature, resources, ecology and economy based on the GIS platform. The region is divided into four parts through the assessment which includes hortative development region, feasible de- velopment region,moderate conservation region and preferential conservation region. The results of the e- valuation can offer scientific reference value for the arrangement of development sequence and the lead of the spatial distribution. It is indicated that most parts of the hortative development areas are located in the city zone and harbor area, large parts of the feasible development areas in the major center-town and the township of ecumenical towns, the main parts of moderate conservation areas include the high ecological sensitivity zone or common development condition zones,and the areas with a role of ecosystem service be- long to the preferential conservation area. At last,the authors propose the suggestion of exploitation inten- sity and sequence based on the rationalization,which may be used in the town and industry spatial distribu- tion of areas along the Yangtze River.