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Основные исследовательские задачи

  • Формирование наборов данных для континентального картографирования лесного покрова Сибири с использованием спутниковых изображений низкого разрешения, включая:
    • сбор и архивирование данных полного покрытия России изображениями AVHRR/NOAA за вегетационные периоды 1998-1999 годов
    • обработку и подготовку ограниченных, но репрезентативных наборов данных AVHRR и/или VEGETATION по лесным регионам Сибири
    • исследование возможностей обновления существующей лесной карты России (масштаба 1:2,500,000) на основе спутниковых данных низкого разрешения
  • Оценка возможностей использования российских спутниковых данных среднего разрешения в оптическом диапазоне спектра (РЕСУРС/МСУ-СК) для регионального мониторинга изменений лесного покрова, включая:
    • сбор и архивирование исторических и современных данных РЕСУРС/МСУ-СК на выбранный тестовый регион
    • предварительное исследование возможностей картографирования лесов на региональном уровне с использованием данных РЕСУРС/МСУ-СК
    • предварительное исследование возможностей выявления изменений в лесах с использованием данных РЕСУРС/МСУ-СК
  • Разработка начальных этапов проектирования Информационной Системы по Лесам Сибири (SFIS):
    • разработка структуры SFIS
    • включение начальных наборов данных GIS в SFIS
    • разработка прототипа интерфейса Информационной системы.

Description of the tasks to be carried out by the IFI

Оценка методов континентального картирования лесов Сибири с помощью изображений низкого разрешения

The project will contribute to generate data sets from a few NOAA receiving stations to cover the whole Russia during the vegetative periods of 1998 - 1999, thereby securing the availability of recent multi-temporal AVHRR data.
  • Collection and archiving of NOAA-AVHRR data covering the whole Russia during the 1998 and 1999 vegetative periods

    In the framework of this project, the following activities will be undertaken:
    • Technical interface/linkage with JRC in particular for issues related to the detailed requirements for -AVHRR data sets (archiving format; data transfer between partners, ..)
    • reception and collection of new NOAA-AVHRR data in Level 1B standard format for the 1999 vegetative period period (from April to October) covering the whole of Russia through a ground station network
    • quality control of NOAA-AVHRR data collected during the 1998 (archive) and 1999 (from the gound stations) for the whole Russia
  • NOAA AVHRR data pre-processing for the 1998 and 1999 vegetative periods and derivation of initial products.

    Data pre-processing will be carried out for the data from both the 1998 and 1999 vegetative periods. Data pre-processing will include:
    • Elimination of redundancy due to overlapping areas from different acquisition stations
    • Fisrt image screening (cloud cover, missing lines, …) to remove noisy areas
    • Copying data sets on external media
    • Creation of a data catalogue
    • Second image screening to select the best quality images for the mapping exercise
    • Processing of data for fire detection and mapping or vegetation indices products
    • Data quality/completeness control

    A selected number of NOAA-AVHRR images acquired during the vegetative period in 1999 will be processed. The data sets should cover a variety of forest types and vegetative conditions (multi-temporal data), thereby providing an opportunity for SAI/GVM to evaluate the potential of NOAA AVHRR data for boreal forest mapping at small scale.
  • Assistance in creating World Fire Web node (s) on the Russian territory.

    The IFI will assist GVM in implementing one or two World Fire Web nodes in the acquisition stations of Irkutsk (first priority) and Moscow or Yakutsk (second priority). These nodes will allow to process the AVHRR data for creating active fires products and transfering these products to GVM and other external partners through the WFW network.

    The IFI will provide the input data formats and Internet connectivity for the World Fire Web nodes. (Rq: GVM has already made successful tests on a limited AVHRR dataset acquired at Irkutsk into the WFW sofware).

    Fire detection and mapping will concentrate on the Summer 1998 period, over the Far East Russian region which experienced an extremely high fire activity

    The specifications for further continuous operation of the World Fire Web nodes are not covered by this study.
  • Pre-feasibility study for updating the existing forest map (1:2,500,000) of Russia using the coarse resolution satellite data (AVHRR and VEGETATION)
    • Selection of the test region according to the existed needs for map updating, to the diversity of forest types, and to the availability of data for validation;
    • Preparation and processing of the test data set (extraction and geometric co-registration of the existing digital forest map, coarse resolution imagery and ancillary data for validation);
    • Analysis of the test data set in collaboration with GVM;
    • Validation of the results using the recent forest inventory data and high resolution imagery.
Contribution to the regional mapping and monitoring of forest using medium-resolution optical data
  • Collection and archiving of RESOURS/MSU-SK (medium resolution images) historical and recent data set for selected fast-changing regions of Russia ;
    • selection of several regions of Siberia for testing the forest mapping and change detection methodology according to availability of data for validation;
    • screening phase using existing catalogues of data and collection of selected RESOURS/MSU-SK data (if any available for the selected regions).
    • preprocessing of the imagery and preparation of initial derived products
  • Pre-feasibility study for regional forest mapping using RESOURS/MSU-SK data
    • litterature review for the thematic legend and interpretation scheme of RESOURS/MSU-SK data for regional forest mapping;
    • data analysis and validation of forest mapping results;
  • Pre-feasibility study for forest change detection using medium resolution satellite data
    • testing different change detection techniques and indicators over the selected region;
    • validation of results using ancillary data and high resolution satellite imagery.

Initial steps for the development of the Siberian Forest Information System (SFIS)
  • Developing the structure of the SFIS
    • general description of the existing GIS data base at the projector's site;
    • assessment of availability of digital data base from Russian organizations ;
    • design of the structure of a new Siberian Forest information system including:
      • structure of the spatial data base
      • structure of the meta data base
      • software and harware selection
  • Integration of initial GIS data sets in the SFIS
    • Inclusion of the forest map of Russia: at 1:2,500,000;
    • Inclusion of the forest fires data base for the 1998 and 1999 periods.
  • Development of a prototype of the information system interface
    • design of an interface between Russian and European nodes
    • creation of a project Web-site with initial examples of products.