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1.
The use of intermediate-scale space imagery in the analysis of current and ancient deforestation is exemplified by a case study in the southwestern quarter of East Germany, an area heavily deforested as a result of mining and agricultural activities. More specifically a mosaic of 1:1,000,000-scale Landsat imagery was used to compile a series of maps (of modern landscapes, forests, land use), the comparison of which provided an inventory of the causes and extent of deforestation over the study area. This in turn permitted linkages between losses of forest cover and other environmental problems to be identified. Translated by Jay K. Mitchell, PlanEcon Inc., Washington, DC 20005 from: Geografiya i prirodnyye resursy, 1988, No. 1, pp. 165-173.  相似文献   

2.
The principles of systems mapping are employed in a model simulating the effects of human activity on the environment. The model takes the form of series of maps which are organized within three basic units or “blocks.” Block I contains general preliminary maps of land use and environmental change within an area which can serve as a basis for subsequent forecasting and proposals for improving land use. Block II contains maps that take stock of, evaluate, and predict human impacts on specific environmental components, and show the spatial distribution of measures proposed to ameliorate these impacts. Block III consists of maps synthesizing the component-related information of the preceding block for the purpose of providing summary assessments about the condition of the environment and land use conflicts in an area and targeting areas deserving the most comprehensive reclamation efforts. Methods of compiling the various maps are described in detail. Translated from: Izvestiya AN SSSR, seriya geograficheskaya, 1986, No. 2, pp. 114–127.  相似文献   

3.
The authors present the results of experiments in the use of remote sensing imagery for construction of maps depicting human modification of nature. Four diverse areas within the USSR were selected as mapping sites, providing a broad range of environmental and land-use characteristics for investigation. Human impacts were most effectively mapped for two desert sites. The authors recommend combining satellite imagery with terrestrial spectrometric observations or color-infrared photography in investigations of environmental change in steppeland and forested territory. Translated from: Vestnik Moskovskogo Universiteta, geografiya, 1984, No. 6, pp. 11-18.  相似文献   

4.
System corrected multispectral imagery of the Central Afar region in Ethiopia provided by the ERTS-1 satellite was evaluated for the purposes of natural resource inventory under the headings of geology, vegetation, soils and land use. The methods and results of image interpretation are discussed in detail and the following general conclusions may be drawn. The ERTS-1 imagery provides a synoptic view of the region that is very nearly orthographic. A colour composite print of multispectral bands 4, 5 and 7 is superior to any of the individual black and white bands for natural resource interpretation. Exploratory soil, vegetation and land use maps and reconnaissance geological maps can be constructed rapidly. The small percentage of forest and agricultural land in this particular area enhances the geological value of the image. Satellite imagery is a valuable addition to the more conventional forms of aerial photography for agricultural studies provided that the study area covers at least 10 000 km2. Ground control was acquired between October 1972 and May 1973.  相似文献   

5.
由于经济建设的发展和自然因素的影响,土地利用状况和农作物布局每年都在发生变化,耕 地在减少、农作物布局每年在调整、建设用地不断增加,为及时掌握土地利用和农作物布局的动态 变化,根据全国农业区划委员会的要求,利用TM磁带结合彩红外航片和地图,在北京地区进行 了动态监测研究试验。由1:10万地形图选取平面控制点对TM磁带进行精处理,平面定位精度为 半个象元,精度较高;利用微机多因子自动分类和目视解译对比分析,定性分类精度达94%;TM 图象的多光谱信息丰富,定位定性精度较高,适用于土地利用和农作物布局的动态监测,周期短、 效益好。  相似文献   

6.
This paper provides a broad overview of current Soviet applications of remote sensing in the performance of forest inventories and related valuational studies, and in the production of derivative thematic maps—in particular, the photostatistical method of forest inventory based on interactive computer-assisted interpretation of satellite imagery and large-scale air photos. The ultimate future objective is the formation of a unified remote sensing-geographic information system for forest management and inventory purposes that will encompass the entire forested area of the country. Advances in the use of satellite imagery in the monitoring of forest fires, insect infestations, and rangeland deterioration have also been made since the late 1970s. Translated from: Geodeziya i kartografiya, 1986, No. 4, pp. 30–36.  相似文献   

7.
The role of remote sensing in one aspect of the World Climate Research Program is summarized. More specifically, unresolved theoretical and methodological problems are outlined for the use of remote sensing imagery (in conjunction with the International Land Surface Climatology Project) to derive quantitative parameters of land (and ice) surface characteristics. These parameters are raw data for models of the overall circulation of the atmosphere, which can be used to generate maps of albedo, surface roughness, hydrology, etc. A list of preliminary standards for satellite monitoring of land surface characteristics is included. Translated from: Izvestiya Vsesoyuznogo Geograficheskogo Obshchestva, 1988, No. 2, pp. 161-165.  相似文献   

8.
Feature classification maps derived from visual and automated methods of interpreting band-specific and composite imagery from the “Fragment” multispectral scanning system are compared in the study of vegetation and related features along the Gulf of Riga. The automated method, featuring a two-stage unsupervised/supervised classification algorithm developed at Moscow University (see MSRS, 1984, No. 3, pp. 255-261) provided for enhanced discrimination of wetland areas, farm land, and settlements, as well as for the elimination of extraneous components (especially the above) visually classified as deciduous forest. Translated from: Vestnilk Moskovskogo Universiteta, geografiya, 1988, No. 3, pp. 49-57 by Jay K. Mitchell, PlanEcon, Inc., Washington, DC 20005.  相似文献   

9.
The use of multitemporal space imagery in the study of vegetation change in a mountainous section of the Azerbaijan SSR is described. Maps depicting both the character and intensity of change are presented, and methods of their compilation described. Translated from: Geografiya i prirodnyye resursy, 1987, No. 4, pp. 174-176.  相似文献   

10.
The authors describe a procedure for the compilation of maps of the avalanche hazard in high-mountain regions of Afghanistan. The basic sources of information include space imagery (photographs and scanner imagery), weather station data, and other geographic information on relief, elevation, location of moisture sources, etc. The methodology features the compilation of series of increasingly more specific and informative maps and graphs regarding the avalanche hazard: terrain types, snow cover depth and seasonal extent, duration of snow cover and its elevational zonation, snow as a factor in avalanche formation, and summary map of avalanche hazard. Translated by Elliott B. Urdang, Providence, RI 02906 from: Materialy glyatsiologicheskikh issledovaniy, 1991, No. 71, pp. 86–93.  相似文献   

11.
A team of Russian geographers describes the development of a program for mapping land use/resource development and the condition of the environment in Russia's Buryat Republic. Three ecological maps recently compiled in the Republic, using a single cartographic base and employing standardized methods, are described. The last such map is a map of environmental use that reflects both a resource-development and an environmental-protection perspective. The article includes detailed examples of the legend of the latter map. Translated by Edward Torrey, Alexandria, VA from: Geografiya i prirodnyye resursy, 1998, No. 3, pp. 23-29.  相似文献   

12.
广州市土地利用与NDVI变化的关联分析   总被引:6,自引:0,他引:6  
利用6S模型对1990年、1995年、2000年及2005年的TM影像进行大气较正,获取4期NDVI和土地利用信息,选择3种土地利用指标与NDVI变化进行相关性分析。结果表明:广州市NDVI平均值具有在1990年~2000年间下降,2000年后略为上升的趋势,NDVI的空间变化趋势与城市发展格局相一致;土地利用程度较高,变化率较大,城市用地扩展强度近期明显增强;将土地利用指标与NDVI进行耦合分析,得到土地利用程度综合指数和NDVI变化的定量关系模型,修正判定系数达0.88以上,较好地反映了两者的关系,且土地利用程度变化率对NDVI的影响程度大于城市用地扩展程度对NDVI变化的影响程度。  相似文献   

13.
The development of a new instructional aid in geography in the USSR is described–an exhibit featuring wall-map sized space imagery of major natural regions. Each station in the exhibit (prepared jointly by the Moscow University Laboratory of Remote Sensing Methods and the Main Administration of Geodesy and Cartography) includes a color image of a site representing one of seven major natural zones, a series of thematic maps based on results of image interpretation, a map showing the location of the imaged area within the USSR, and a series of ground photographs of typical landscapes and land uses. Translated from: Vestnik Moskovskogo Universiteta, geografiya, 1988, No. 2, pp. 36-41 by Natalia B. Barbash, Brooklyn, NY 11209.  相似文献   

14.
The authors outline the general policy governing the use of remote sensing in Siberian mineral exploration—as a tool in the structural-geomorphologic mapping of potential mineral-bearing locations. Such maps are used to infer geologic structure (and endogenous conditions for mineral formation) and the character of contemporary exogenous processes (and conditions of transport and concentration of mineral residues) from geoindicators in surface terrain visible from space. Uses of space imagery in the study of seismic activity and engineering geomorphology are also described. Translated from: Kompleksnyye aerokosmicheskiye Issledovaniya Sibiri, A. L. Yanshin and L. K. Zyat'kova, eds. Novosibirsk: Nauka, 1984, pp. 5-14.  相似文献   

15.
A brief review paper focuses on Soviet strategies for the use of space imagery, particularly photographic products (1:2,000,000 to 1:4,200,000 scale) from manned spaceflights, in the revision of small-scale general reference maps. Principles for the interpretation and mapping of basic map elements appearing on space photographs are outlined. Space photographs provide for reduction in time spent in map editing and the more correct analysis of the reliability of information and its generalization. A technology of map revision based on the joint use of original photographs and photomaps, with the transfer of revisions from photomaps to map originals, is proposed. Translated from: Geodeziya i kartografiya, 1986, No. 8, pp. 29-33.  相似文献   

16.
The effectiveness of utilizing the remote sensing signatures of various vegetation associations along the Volga delta region as indicators of specific water availability/flooding conditions is explored. Considerable attention first is devoted to elucidating relationships between higher aquatic vegetation and hydraulic regimes on the basis of field and laboratory studies, before the focus shifts to how remote sensing imagery can provide insights into these relationships. An output of the process was a series of maps depicting environmental change and suggesting sites where reclamation and public health measures were necessary. Translated from: L. N. Vasil'yev, ed., Kosmicheskiye metody izucheniya biosfery [Remote Sensing Methods in the Study of the Biosphere]. Moscow: Nauka, 1990, pp. 88–93.  相似文献   

17.
This paper discusses the development and implementation of a method that can be used with multi-decadal Landsat data for computing general coastal US land use and land cover (LULC) maps consisting of seven classes. With Mobile Bay, Alabama as the study region, the method that was applied to derive LULC products for nine dates across a 34-year time span. Classifications were computed and refined using decision rules in conjunction with unsupervised classification of Landsat data and Coastal Change and Analysis Program value-added products. Each classification’s overall accuracy was assessed by comparing stratified random locations to available high spatial resolution satellite and aerial imagery, field survey data and raw Landsat RGBs. Overall classification accuracies ranged from 83 to 91% with overall κ statistics ranging from 0.78 to 0.89. Accurate classifications were computed for all nine dates, yielding effective results regardless of season and Landsat sensor. This classification method provided useful map inputs for computing LULC change products.  相似文献   

18.
A study was conducted in south Texas to determine the feasibility of using airborne multispectral digital imagery for differentiating the invasive plant Brazilian pepper (Schinus terebinthifolius) from other cover types. Imagery obtained in the visible, near-infrared, and mid-infrared regions of the light spectrum and a supervised classification approach were employed to develop thematic maps of two areas infested with Brazilian pepper. Map accuracies ranged from 84.2 to 100% for the Brazilian pepper class. Findings support using airborne multispectral digital imagery as a tool for separating Brazilian pepper from associated land cover types and further encourage exploration of airborne multispectral digital imagery and image processing techniques for developing maps of Brazilian pepper infestation in Texas and abroad.  相似文献   

19.
Heterochronous multispectral imagery from the “Fragment” scanner is used to identify and map a series of “natural-agricultural complexes,” or agricultural landscapes, of southern European Russia. Interpretation is based on imagery in the green, orange, red, and near-infrared zones of the spectrum (0.5-1.1 μm). Interpretation keys and other information designed to facilitate feature discrimination (optimal wavelengths, best seasons for imagining) are provided in many instances. Natural landscape and soil erosion maps are also compiled from the imagery, which supply information (an optimal crop rotation scheme and needed reclamation measures) used on the agricultural landscape map. Translated from: Vestnik Moskovs-kogo Unlversiteta, geografiya, 1985, No. 2, pp. 34-41.  相似文献   

20.
基于多波段统计检验的土地利用变化检测   总被引:2,自引:1,他引:1  
在将历史土地利用矢量图与新时期遥感影像结合研究的基础上,提出多波段统计检验差异法进行土地利用变化检测,有效避免了传统方法中阈值的不确定性.在黑龙江省佳木斯市开展的试验及精度分析表明,本方法可以在无人工干预的情况下较好地检测出土地利用变化,总体检测精度达到86.2%.  相似文献   

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