期刊名称：Archiwum Fotogrametrii, Kartografii i Teledetekcji
印刷版ISSN：2083-2214
出版年度：2009
卷号：20
语种：English
出版社：Main Board of Association of Polish Surveyors
摘要：The article presents a way of applying the attributes resulting from the Digital Terrain Model (DTM) for determining the borders of high altitude vegetation zones. The research was part of a project commissioned by the State Forests National Forest Holding under the title “ Specification of borders of high altitude vegetation zones for mountain forests with a division into forest inspectorates and forest areas in southern Poland”,and was implemented in the years 2007/2008 by a team of researchers from the Forest Faculty at the Agricultural University and a Chair (Institute) of Geomatics at the Faculty of Mining Surveying and Environmental Engineering at the University of Science and Technology. The range of field work and indoor work necessary to determine the borders for a large area characterized by a considerable variation prompted us to look for solutions based on geo-processing. Methods based on the analysis of data are characterized by their repeatability,the fact that they can be verified,and the necessary field measurements can be minimized. The area selected for tests connected with the use of DTM attributes covers the forests of Piwniczna Forest Inspectorate. The basic source of data used in the project was the elevation data in TIN format which came from WODGiK. On the basis of the elevation model the following parameters have been determined: aspect,slopes,as well as attributes describing the orography of the area,where the most interesting is Topographic Position Index (TPI). In a given area,following the criteria of dendrology,forest site type and phytosociology,border points were determined between the upper subalpine forest,mountain forests and sub mountain forests. The studies used the fact that a high correlation exists between the borders of the high altitude vegetation zones and the isotherms of average temperature. The method adopted here consisted of determining the formula to calculate the approximate value of the average temperature on the basis of data that it is possible to specify using a DTM. To do this,data from 139 meteorological stations were used,for which the following spatial parameters were specified: longitude,latitude,altitude above sea level,slope,aspect,the Topographic Position Index for various scales,as well as classifications of the area’s topography determined from TPI values. Having a pattern combining the above mentioned attributes with an average temperature,the next step was to determine the isotherms of average temperatures for a test area. Currently some tests are being done to perfect the method suggested and to introduce new attributes of DTM. The solution proposed enables one to supplement and update the Information System for the National Forests.
其他摘要：Artykuł przedstawia sposób wykorzystania atrybutów Numerycznego Modelu Terenu (NMT) dla wyznaczenia przebiegu granic wysokościowych pięter roślinnych. Zakres prac terenowych i kameralnych koniecznych w celu wykreślenia tych granic dla znacznego obszaru ch
关键词：Automatic analysis;spatial analysis;boundaries of altitudinal vegetation zones; TPI;NMT
