A Study On The Approach Of Remote Sensing Dynamic Monitoring Of Canopy State Changes

Along with the forest environment in the important influence awareness of environmentalprotection, and the growing attention and concern, In particular, in recent years, thedeterioration of the environment, the greenhouse effect and climate anomalies, make peopleunderstand the value of the forest has been further improved. Therefore, how large forestcanopy on the state effectively, scientific monitoring, as forest protection top priority totackling one of the topics.This paper around the national science and technology infrastructure platforms focus onthe project, "forest disaster monitoring, early warning and management system platform(2003DIA6N007)" as part of its research, make full use of different years in a similarLandSat5 TM imaging data, supplemented by detailed GIS data Combined with the fieldsurvey data to study the DaXing'AnLin region, Research and summed up the state of thecanopy remote monitoring of the changes in technology and work processes, for the remotemonitoring of forest disaster model for the establishment of an ideaYielded the following key findings:(1) Research and summed up a canopy changes in thestate's remote monitoring technology processes and methodologies;(2) In the process ofmonitoring data preprocessing step, the relative radiometric calibration do an in-depth study.Made use of images margin and quality control of the combination of the same characteristicsof selected points (PIF), Remote sensing dynamic multiphase monitoring of remote sensingimages to a radiation; (3) The use of the composition of the band, Extraction of woodland;Based on the platform constructed by the GIS images, DEM comprised of multiple spatialdatabases, Data Mining will be introduced in the forest-type remote sensing classification; (4)for a variety of vegetation index model analysis, screened canopy can reflect the state ofremote sensing to monitor changes in the model, the rating change information extraction;formulated and implemented a field investigation program. (5) In response to the actual needsof production units, research and the development of a "state of the canopy changes remotemonitoring system," Dynamic monitoring as a useful supplement.