【摘要】 南麂列岛国家级海洋自然保护区管理信息系统是采用集成技术开发的专用信息系统。该系统建立了可科学管理南麂列岛自然保护区的地理空间数据、贝藻类数据、水文气象数据、文本数据、多媒体数据等数据库系统，具有空间数据和属性数据的管理、更新、查询及其扩展等功能。介绍了南麂列岛土地覆盖状况分析的应用实例。系统对提高南麂列岛自然保护区管理，同时建设海洋类型的自然保护区信息系统具有重要的示范作用。更多还原

【Abstract】 This paper describes the Nanji Islands Marine Natural Reserves Information System(NMNRIS)ofChina.The system is developed specially for Nanji Islands using RS,GIS and Database techniques.In NMNRIS,spatial database,remote sensing information database,shellfish and alga database and so on are established,andthe system has the functions of managing,updating and querying.In the paper,four sections are included as fol-lowing.(1)The first section describes the framework of the system,which is designed based on the analysis of theusers and their requirements.The system includes two sub-systems of spatial data and property data respective-ly.(2)In the second section,the data of the system are introduced.There are seven sub-databases in the sys-tem such as geo-database,remote sensing database,shellfish and alga database,document database,multimediadatabase and so on.(3)The functions of the system are discussed in detail from two aspects in the third section.The first func-tion is to manage spatial data and to do spatial analysis,and the other one is to manage property data.(4)Finally,the land covers analysis based on the system is discussed as an application of NMNRIS.Theresults obtained from the present investigation are as follows:(a)The main land cover types in the Nanji Islandare meadow,shrubbery,farmland,village,water body and sands.Meadow and shrubbery are the dominant types,being 89.6% of the island’s total area.(b)The patch number,fractal dimension of the patch and patch perimeterare related to patch areas.The patch number decreases with the increase of the patch area whereas the fractaldimension increases with the increase of the patch area.The patch perimeter has the linear relation with thepatch area.(c)The fractal dimensions of the meadow,shrubbery,farmland and village calculated by the perime-ter-area method are 1.3433,1.3728,1.2563 and 1.2156 respectively.On the other hand,the fractal dimensionsof the meadow,shrubbery,farmland,village,water body and sands computed by the measure-perimeter-areamethod are 1.096,1.102,1.05,1.062,1.002 and 1.047 respectively.Thus,it is concluded that the meadow andshrubbery have higher dimensions compared with those of the farmland and village.It is indicated that patchstructures of the meadow and shrubbery are more complex than those of the farmland and village.Studies alsoshow that the fractal characteristics of land covers are related to the human activities.(d)The test of significanceof fractal characteristics shows that the differences between the meadow and shrubbery and the farmland andvillage are significant whereas the difference between the meadow and shrubbery and the difference betweenfarmland and village are insignificant.In a word,NMNRIS will improve the management level of the Nanji Islands Marine Natural Reserves.Atthe same time,the experiences and techniques of the project will lead the way for other similar projects,afterall,NMNRIS is the first application of RS,GIS and database techniques for Marine Natural Reserves.更多还原