首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献，搜索用时 15 毫秒
1.
A report on the use of air photos to monitor rangeland conditions in mountainous areas of Azerbaijan demonstrates the variety of their applications in the inventory and classification of mountain pastures, evaluation of their condition, and the assessment of prospects for expanding the livestock industry. Specific procedures are outlined for ascertaining the carrying capacity of alpine and subalpine pastures, as well as for monitoring changes in their conditions. Translated by Edward Torrey, Alexandria, VA 22308 from: Geografiya i prirodnyye resursy, 1988, No. 3, pp. 131-134.  相似文献   

2.
The author outlines, in diagrammatic form, a procedure for the joint use of old maps (topographic, land survey, etc.) and current space imagery to compile maps of environmental change. The ancient maps reveal land use and physical conditions which serve as a benchmark for evaluation of subsequent change. Space imagery is useful both in updating the current state of the environment and providing a cartographic base for the preparation of final maps. Selected areas of Moscow Oblast are used as test sites. Translated from: Izvestiya vuzov, Geodeziya i aerofotos' yem-ka, 1985, No. 1, pp. 104-109.  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.
A Russian geographer describes a methodology whereby data on slopes contained within a geographic information system are employed in the compilation of geomorphological maps. More specifically, the author proposes and tests a technology for the automated compilation of electronic maps of mean slope for the territory of Altay Kray, West Siberia, Russia. Translated by Edward Torrey, Alexandria, Virginia from: Geografiya i prirodnyye resursy, 2002, No. 2, pp. 142-146.  相似文献   

5.
《测量评论》2013,45(25):140-151
Abstract

The subject of the training of European surveyors has received a great deal of attention in the course of the last two Empire Conferences, but little or no mention has been made of the native surveyor, his education, work, and prospects. The subject is very important, however, and the account of the training of Africans for the N. Rhodesia Survey, which appeared in vol. iii, no. 21 of the Empire Survey Review, was read with considerable interest. It may not be out of place, therefore, to introduce this paper on the means adopted in Malaya to recruit and train an efficient staff of subordinates or “Technical Assistants” as they are termed locally.  相似文献   

6.
The authors describe a method of applying the cartographic method of research to the study of air and water pollution. More specifically, the paper outlines a program of mapping air, water, and soil pollution in the Donets Basin, which is an integral part of four different stages in the formulation of an environmental protection plan. Emphasis is placed on the visual interpretation of maps depicting the spatial distribution of physical parameters at pollution sources, of concentrations of particular pollutants over the entire study area, and of their direct and cumulative impacts on the environment. Translated from: Geograflya i prirodnyye resursy, 1986, No. 2, pp. 92–94.  相似文献   

7.
A second paper on floodplain and channel mapping describes how the “cartographic method” (the use of maps to derive information about the world not readily available through other means of investigation) is applied through the use of special maps depicting the sizes and types of river channels, the character of floodplains and of channel deformation, and the general conditions responsible for channel evolution. The uses, strengths, and limitations of channel maps at small, intermediate, and large scales are discussed, as well as methods of cartographic presentation that have proven most effective. Translated from: Geografiya i prirodnyye resursy, 1986, No. 3, pp. 99-108.  相似文献   

8.
An experiment is described in which multiscalar remote sensing imagery is sequentially employed in the detection of various rankings of soil types endemic to the taiga natural zone in the northern USSR. Relief features, vegetation associations, extent of surface water, and drainage patterns visible on imagery at scales from 1:12,000,000 to 1:5,000, also examined at low altitude and in the field at a series of test sites, served as indicators of various soil cover types. Considerable attention is given to an explanation of why these features can be considered valid indicators of taiga soil types as well as to the appearance of the indicators on band-specific (black-and-white) and color composite imagery. Translated from: Izvestiya Akademii Nauk SSSR, seriya geograficheskaya, 1987, No. 3, pp. 87-99.  相似文献   

9.
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   

10.
The author outlines a method for extrapolating reference spectral data describing the condition of certain crops obtained for a particular point in time to periods for which reliable remote sensing data are not available. Examination of the correspondence between crop “condition classes,” identified through visual interpretation of aerial imagery, and actual yields/biomass for a number of phases of crop development of winter wheat for several crop years provides basic information for a probability matrix of the condition of a crop at times B, C, and D based on previous conditions at times A, B, and C. Translated from: Vestnik Moskovskogo Universiteta, geografiya, 1988, No. 4, pp. 73-79.  相似文献   

11.
《测量评论》2013,45(52):254-257
Abstract

Whenever the Government wants to receive new students to be trained as surveyors for the Government Service it is usual for the public to be informed by means of a Gazette Notice outlining the conditions of entry into the Survey School which is attached to the Land and Survey Department. Nowadays students are admitted through the Government Higher College at Yaba by means of the Entrance Examination of that college. It is one of the conditions that before a candidate applies to take this Entrance Examination he must have passed his Cambridge School Certificate Examination, the Matriculation Examination of any British University, or its local equivalent, and must possess also a certificate of character.  相似文献   

12.
Basic exogenic dynamic processes are analysed and discussed. Such processes are actively developed and intensively utilized in mountainous regions of the Baikal-Amur Mainline. Investigation of these regions, which call for reliance on aerospace methods is of considerable economic significance. Translated from: Kosmicheskiye Issledovaniya Prirodnykh Kompleksov Sibiri i Dal'nego Vostoka, Novosibirik, 1983, pp. 57-63.  相似文献   

13.
The author surveys the use of remote sensing imagery in the study of mass exchange in glaciers, i.e., glacier dynamics resulting from phase changes in the water which they contain. A program of research now underway at the Institute of Geography (USSR Academy of Sciences) in conjunction with the “Priroda” Remote Sensing Center (Moscow) focuses on improving methods of data collection and mapping of glacier dynamics from space imagery, and particularly on identifying natural glacioclimatic zones believed to represent specific mass exchange conditions or regimes. The boundary of glacier nourishment separating areas of accumulation and ablation represents a key glacioclimatic indicator of mass exchange on satellite imagery and aerial photography. Translated from: Geodeziya i kartografiya, 1986, No. 5, pp. 26–31.  相似文献   

14.
The activities of the Pacific Institute of Geography, USSR Academy of Sciences in the creation of a series of standardized computer (line printer) atlases of sown areas and yields of basic agricultural crops at 1:8,000,000 scale are described. Contributions by Institute researchers in the development or refinement of greytone scales for alphanumeric areal symbols, computer mapping programs in general, and applications of line-printer maps in planning and nature management are also mentioned. Translated from: Izvestiya Akademiya Nauk SSSR, seriya geografi-cheskaya, No. 3, 1986, pp. 128-130.  相似文献   

15.
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   

16.
The findings of a program monitoring the growth of an enormous man-made lake, created by the flooding of a low-lying area by irrigation water drainage, are described. Black-and-white space images for the period 1973-1985 are used to determine rates of shoreline displacement, map the growth in the lake's water area, and to determine probable areas of future flooding as a basis for prediction of future lake levels and shoreline positions. Translated from: Geodeziya i kartografiya, 1988, No. 7, pp. 44-46.  相似文献   

17.
The study reports the impact of migratory livestock in the buffer area of Kedarnath Wildlife Sanctuary. The cumulative impacts of livestock grazing, fuel wood extraction and other anthropogenic pressures on forest cover in and around camping sites have been analyzed using satellite data and field observations. Multi-date satellite data were used to map the forest cover around 16 seasonal livestock camps. An annual loss of about 7.25 ha of forest covers during 1976–1990, 13.57 ha during 1990–1999 and 11.46 ha during 1999–2005 are recorded. A loss of 108.53 ha of forestland has been estimated during 1976–1990, about 122.16 ha during 1990–1999 and 68.78 ha during 1999–2005. It is also observed that many of the isolated camping sites are now connected due to loss of vegetation. Phytosociological analysis indicates that the number of seedlings and saplings in three species of Quercus (Q. leucotrichophora, Q. floribunda and Q. semecarpifolia) as compared to mature tress is very less around cattle camping sites. The ratio of number of sapling with seedling and trees indicates that the status of sapling is nil to very poor, an indication of loss of saplings due to either trampling or grazing.  相似文献   

18.
《测量评论》2013,45(81):138-140
Abstract

1. In a paper on “Some Recent Developments in Photogrammetry” which he read recently at the Royal Institution of Chartered Surveyors and which has now been published in the Institution's Journal, Lieut.-Col. E. H. Thompson, R.E., expounded the advantages of using a reseau ruled on the glass pressure plate of the camera in order to obtain a calibrated grid on each photograph.  相似文献   

19.
A method is proposed for analyzing properties of solar radiation at the earth's surface based on satellite observations of cloud cover. It is shown that the amount of incident solar radiation is clearly governed by type of weather conditions and, more specifically, by the quantity and types of clouds. This affords a basis for predicting solar radiation receipt at the earth's surface. Translated by Edward Torrey, Alexandria, VA 22308 from: Vestnik Moskovskogo Universiteta, geografiya, 1989, No. 2, pp. 83–85.  相似文献   

20.
This study is devoted to testing the general applicability of radar imagery in vegetation analysis, and, in particular, to determining the potential of radar images obtained for different seasons. In plains areas intermediate-scale radar images are used to discriminate forests differing in age and stand productivity and to identify sectors where the tree stand has been partially destroyed. They also can be used as supplementary material in studying forest resources and in geological research in forested plains areas. Translated by Edward Torrey, Alexandria, VA 22308 from: Geografiya i prirodnyye resursy, 1989, No. 3, pp. 130–134.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号