摘要:Regional Management Information System(RMIS) gives service to regional planning, management and decision-making. According to the investigation and system-design, the data of RMIS is classified as 7-8 levels that representing the attribute of the smallest pattern on a thematic map.. The highest 3 levels are the essential high-rank classification for each RMIS. The low-rank classification is the perfection of the 3rd high-rank in detail with moce professional knowledge. As it deals with a wide range of disciplines in which there are many different forms of every thematic class. 32-digital number is used to data classify and coding in RMIS. The classified and coded format for RMIS includes high-rank code, low-rank code, location code, time code, order code, and flexible code that each occupies 4,8,6,6,4 and 4-di-gital number respectively. Thus, it is convenient to share and exchange the data of all levels for RMIS.
摘要:A Microcomputer Solid Waste Remote Sensing Information System (MSWRSIS) was set up in microcomputer (IBM PC/XT) by using image data of aerial remote sensing in Shenyang area. The MSWRSIS, which could be used for waste information inquiring and synthetical statistics efficiently, rapidly and accuratly, may set a base for solid wastes management in urban area. On the basis of the system (MSWRSIS) and method of Scoring System, environmental impact assissment (EIA) of solid wastes in urban area could be done. The proper sites of priority solid wates for control were recommend d under the results of the EIA.
摘要:This paper expounds the method tor invesigation ana analysis on urban residential living conditions by using of color infrared ae ial photos. Basic approaches are: (1) by means of direct and indirect interpretation keys to nterpret and probe into the information of material & spiritual living conditions of the res dents; (2) choosing convenience degree and comfort degree as the evaluation index (include eight evaluation factors) to make spatial analysis and quantitative, comprehensive assessment; and (3) to propose some suggestions about improving the above-named conditions.
摘要:The object of this study was to use remotely sensed LANDSAT Thematic Mapper data, combined with the concurrent in situ water quality data, for the assessment and mapping of water pollution level in the area of Suzhou, .Jiangsu Province. The water quality parameters of interest included: (1) Dissolved oxygen (DO); (2) Biochemical oxygen demand (BOD); (3) Chemical oxygen demand (COD); and (4) Organic pollution index A. Based on the statistical analysis of the relationship between TM digital values and the water quality parameters of 9 sampling sites on the Southern Grand Canal, a series of regression models were developed and examined for validity. The most effective model was chosen and extended to the entire study area to map the water quality with signature from the 3 Thematic Mapper visible bands. The spatial distribution of water quality information in this study area was color-coded via digital image processing techniques and successfully verified by the local environmental monitoring station.
摘要:The paper describes the method and conclusion of soil erosion survey and mapping (scale-l:100,000), area measurement and regional planning in Yuqiao reservoir basin in Tian-jing Area based on pre-USSR ’Salyut’ Space Station remotely sensed image. The relationship between the soil erosion and whole nitrogen and phosphorous lost in typical sample area has been tantatively discussed, and this offered the scientific basis for the solution of eutrophica-tion of water quality in inhabitants living, industry and agriculture in Tianjing Area.
摘要:The overthrust had developed on the margin of the fault basin in the west of Liaoxi sag. In the paper, the characteristics of the fault are described by TM image. The fault zones are interpretated and classified too. The significance in searching coal according to the fault is shown. The prospect in searching coal is analysed concretly around Beipiao and Nanpiao mineral district and the dip angle of the overthrust is tried to classify by interpretating TM image.
摘要:This paper advances and analyses an algorithm converting 2DRE quadtree to. raster. The algorithm can be served as the inverse operation of raster to 2DRE quadtree, but it is not direct inversion, instead, it takes other simpler measur i.e. intersection of 2DRE quadtree and code transforming method in Raster to Quadtree conversion, to make the algorithm more effective. It can also avoid possible trouble of memory overflow caused by the operation on bigger images in smaller memory.
摘要:This paper is dealing with the teachnique of working up 318 orthophotoquads on the scale of 1:10,000 in area of high mountain and vally. We used the collected aerial photograph on the scale of 1:45,000 and 1:35,000, and the results of 1:50,000 scale topographical map for photogrammetric controlextension. In the course, we also used analytical mapping-orthophoto echnique concerning analyticalplotting by means of the directional points for block aerotrian-gulation. The result showed that mapping quality reach the planned standard and the accuracy of land resource survey mapping.