Remote sensing for resources development and environmental management: Remote sensing for resources development and environmental management

damen, m. c. j.

Bibliographic data

Multivolume work

Persistent identifier:: 856342815

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856342815

Language:: English

Additional Notes:: Volume 1-3 erschienen von 1986-1988

Editor:: Damen, M. C. J.

Document type:: Multivolume work

Volume

Persistent identifier:: 856641294

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Scope:: IX Seiten, Seiten 551-956

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A,. A. Balkema

Identifier (digital):: 856641294

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,2)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Damen, M. C. J.

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: 5 Non-renewable resources: Geology, geomorphology and engineering projects. Chairman: J. V. Taranik, Liaison: B. N. Koopmans

Write comment:: Wegen zu enger Bindung kommt es teilweise im Original zu Textverlust.

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Small scale erosion hazard mapping using landsat information in the northwest of Argentina. Jose Manuel Sayago

Document type:: Multivolume work

Structure type:: Chapter

Symposium on Remote Sensing for Resources Development and Environmental Management / Enschede / August 1986 669 Small scale erosion hazard mapping using landsat information in the northwest of Argentina Jose Manuel Sayago San Miguel de Tucumân, Argentina raphy with scale of ABSTRACT : a survey cond i t i on fluctuât A methodology for the erosion hazard carry out in an extensive region of mapping at s ma Î f the no r thwe s t of scales is Argentine described through with climatic ing from semi arid to wet sub-trop i ca1 . interpretation of mu 1ti-tempora1 landsat images and conventional aerial photo - i nterpretat i on permit delineation of mapping units characterized by the recurrence of landform and land use pattern. Field measurement of the USLE factors-rainfall erosivity, soil erodibility, slope steepnes and lenght and coverage- potential rates of soil loss following the allow to criteria st ¡mate the erosion hazard expressed suggested by S.A. El-Swaify (1977). I NTRODUCTI ON In developing countries small scale erosion maps might be an important tool in order of the regional development. They contribute to detect areas seriously affected by erosion processes where application of conservation measures is prioritary. In areas of natural vegetation ready to be transform in cultivated lands through deforestation they allow to stablish the potential risk of degradation. Finally, they identify those regions that for the complexity of its erosive features and the variety of the environmental influences must be studied with more detail. The region under study, representative of the northwest of Argentine for its climatic and geomorpho1og i ca 1 conditions, appears severely affected by differents erosive processes, although there are areas still not disturbed. The objectif of this work is to carry out an erosion hazard survey in order to stablish methodological criteria for the mapping of extensive regions at scales rang ing between 1:250.000 to 1:1.000.000. For the purpose of this work the geomorpho- logical units defined by the recurrence of internal landscape characteristic represent the basic information for the mapping of erosion. In that sense, the use of satelite info rma_ tion assures acceptable planimetric base, a multidisciplinary perspective and an object ive pursuit of the environmental changes. For the evaluation of erosion by water the application of parametric criteria contribu tes more objectivity particulary through the use of methods as for example the Universal Soil Loss Equation. THE GE0M0RPH0L0G I CAL SECTOR I ZAT I 0N Based on the ideas of Verstappen H. Th. (1983) , ZonneveId J. I .S. (1983) and Tricart J. (1982) , a relief classification for the study areas has been established. In this classification relief and climate appear as independent factors acting as the "substratum" for the other landscape factors (soil, vegetation, hidrology, fauna, etc.). The classification includes five levels of complexity or scale: geomorpho1og i ca 1 province, geomorpho1og i ca1 region, geomorpho1og i ca1 association, geo- morphological unit and relief element. Each category correspond to a determined scale interval that represents a hierarchical leve'l of relief sector i zat i on. At each hierarchical level, information on landscape factors such as for example hydrology, vegetation, soils or fauna, with similar levels of complexity are to be integrated (Sayago J.M.1982). At the scale of this work seven geomorpho1ogica1 associations, (FIGURE ]) f Q ] lowing partly the concepts of Van Zuidam ( 1 9 8 3 ) > wfere character^ ized on the basis of the regional meso-climate conditions and the geomorpho1ogica1 features of major recurrence. A1 - Dry-cool mountainous terrain A2 - Humid subtropical steep hilly terrain A3 - Humid subtropical piedmont plain A4 - Dry-wet subtropical alluvial plain A5 - Dry-wet subtropical alluvial overflow plain G1 - Arid steep rolling terrain G2 - Semi arid sloping terrain FIGURE 1 Geomorpho1ogica1 characterized by relief pattern. 25 Km ■ 1 associations meso-climate and a typical TH F EVALUATION OF EROSION HAZARD Erosion hazard can be described as the chance that acelerated erosion will start in the near future. In cases where accelerated ero sion is already in progress the erosion hazard would be the degree of further erosion that can be expected in the near future. Ero sion hazard can decrease when effective

Access restriction

Copyright

fullscreen: Remote sensing for resources development and environmental management (Volume 2)

Multivolume work

Volume

Chapter

Chapter

Table of contents

Cite and reuse

Volume

Chapter

Image

Image fragment

Citation links

Citation recommendation