scholarly journals Uso de fotografias digitais no mapeamento florestal

2001 ◽  
Vol 23 (23) ◽  
pp. 127
Author(s):  
Daniela Catelan ◽  
Renato Malcorra Prates ◽  
Roberto Cassol

With the advent of the new technologies in the area of the remote sensing, the survey of the natural resources started if to use of sophisticated techniques that aim at a more adequate mapping in terms of representative and necessary information of the phenomena and superficial objects, allowing to study the dynamics, to lead, to handling adequately and to monitor. The use of digital photographic pictures is very promising, beyond the easy acquisition supplies important information on changes in the use of the land. The digital cameras, possess potential and application in the monitoring of the natural features. They also present the advantage in the reduction of costs due not to need the process revelation and magnifying because it excuses to the use of the film and scanering of the photograph and, makes possible that the result is seen in the monitor of the computer, besides presenting resolution better. This work has as objective to present a quarrel on the acquired digital photograph use from digital cameras high resolution in the mapping of the forest features.

Author(s):  
V.M. Dubyanskiy ◽  
N.V. Tsapko ◽  
L.I. Shaposhnikova ◽  
D.Yu. Degtyarev ◽  
N.A. Davydova ◽  
...  

New technologies based on remote sensing, has been actively developing now for the increasing the effectiveness of nature plague foci monitoring. The unmanned aerial vehicle (UAV) «GeoScan–101» was used for monitoring and for orthophoto creating. The monitoring was carried out at Caspian nature plague focus on a stationary square 4 ha. The accounting of rodents’ holes had been implemented previously. Gerbils Meriones tamariscinus is the host of plague microbe in the Caspian natural plague focus. The monitoring using UAV allows identifying 78,26 % of Meriones tamariscinus holes as well as Microtus socialis and Ellobius talpinus. The comprehensive using remote sensing from space and data from drone (a high-resolution picture in real time) for elaboration data of remote sensing allows increasing the effectiveness of nature plague foci survey, where the hosts have the holes small diameter: the gerbils' genus Meriones and the voles’ genus Microtus.


2002 ◽  
Vol 8 (1) ◽  
pp. 15-22
Author(s):  
V.N. Astapenko ◽  
◽  
Ye.I. Bushuev ◽  
V.P. Zubko ◽  
V.I. Ivanov ◽  
...  

The concept of exposome has received increasing discussion, including the recent Special Issue of Science –"Chemistry for Tomorrow's Earth,” about the feasibility of using high-resolution mass spectrometry to measure exposome in the body, and tracking the chemicals in the environment and assess their biological effect. We discuss the challenges of measuring and interpreting the exposome and suggest the survey on the life course history, built and ecological environment to characterize the sample of study, and in combination with remote sensing. They should be part of exposomics and provide insights into the study of exposome and health.


1994 ◽  
Vol 29 (1-2) ◽  
pp. 135-144 ◽  
Author(s):  
C. Deguchi ◽  
S. Sugio

This study aims to evaluate the applicability of satellite imagery in estimating the percentage of impervious area in urbanized areas. Two methods of estimation are proposed and applied to a small urbanized watershed in Japan. The area is considered under two different cases of subdivision; i.e., 14 zones and 17 zones. The satellite imageries of LANDSAT-MSS (Multi-Spectral Scanner) in 1984, MOS-MESSR(Multi-spectral Electronic Self-Scanning Radiometer) in 1988 and SPOT-HRV(High Resolution Visible) in 1988 are classified. The percentage of imperviousness in 17 zones is estimated by using these classification results. These values are compared with the ones obtained from the aerial photographs. The percent imperviousness derived from the imagery agrees well with those derived from aerial photographs. The estimation errors evaluated are less than 10%, the same as those obtained from aerial photographs.


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