↓
 

ISSN 1993-3916

Arid Ecosystems

The “Arid Ecosystems” journal was organized by the decision of General Biology Division of the Russian Academy of Sciences.

  •  Home
  • Preprint
  • Contacts
  • Open Access 
  • Archive
    • Issues 1990s
      • Issues for 1995
      • Issues for 1996
      • Issues for 1997
      • Issues for 1998
      • Issues for 1999
      • Issues for 2000
    • Issues 2000s
      • Issues for 2001
      • Issues for 2002
      • Issues for 2003
      • Issues for 2004
      • Issues for 2005
      • Issues for 2006
      • Issues for 2007
      • Issues for 2008
      • Issues for 2009
      • Issues for 2010
    • Issues 2010s
      • Issues for 2011
      • Issues for 2012
      • Issues for 2013
      • Issues for 2014
      • Issues for 2015
      • Issues for 2016
      • Issues for 2017
      • Issues for 2018
      • Issues for 2019
    • Issues 2020s
      • Issues for 2020
      • Issues for 2021
      • Issues for 2022

Архив метки: dendrochronology

ASSESSMENT OF SPATIAL – TEMPORAL VARIABILITY OF ARID ECOSYSTEMS IN THE REPUBLIC OF BURYATIA

Arid Ecosystems

Garmaev E.Zh.,  Ayurzhanaev A.A.,  Tsydypov B.Z.,  Alymbaeva Zh.B.,  Sodnomov B.V., Andreev S.G.,  Zharnikova M.A.,  Batomunkuev V.S.,  Mandakh N., Salikhov T.K.,  Tulohonov А.К.  ASSESSMENT  OF  SPATIAL – TEMPORAL VARIABILITY OF ARID ECOSYSTEMS IN THE REPUBLIC OF BURYATIA // Arid ecosystems. 2020. V. 26. № 2 (83). P. 34-42. | PDF

Climate change and human activity on the territory of the Republic of Buryatia intensify the processes of desertification and land degradation. Zoning of the territory of Buryatia was carried out according to the aridity index using ENVIREM high spatial resolution climatic data. Based on the correlation analysis of the time series of the NDVI AVHRR vegetation index, meteorological series of the NCEP / NCAR reanalysis and field studies, a quantitative assessment of the long-term changes in vegetation cover in arid and humid zones was carried out. Maps of the spatial distribution of linear trends of NDVI and precipitation for 1982-2015 with the separation of wet (1982-1999) and dry periods (2000-2015) were obtained. During the wet period, positive NDVI trends are observed for almost the entire territory of the Republic, while the dry period is characterized by a significant increase in the negative trends of the vegetation index. The positive correlation between the Selyaninov hydrothermal coefficient and NDVI is observed for intermountain steppificated hollows, negative for forest landscapes. The dynamics of NDVI of steppe vegetation largely depends on precipitation, the dynamics of NDVI of forests — on temperature. Reforestation, post-pyrogenic succession, shrubbing of abandoned fields, etc., cause the increase of NDVI. Negative NDVI trends are typical for steppe ecosystems under conditions of decreasing precipitation, and for forest vegetation prone to cuttings and fires.

Keywords: Buryatia, arid zones, vegetation, NDVI, Selyaninov hydrothermal coefficient, precipitation, trend, reanalysis, dendrochronology.

DOI: 10.24411/1993-3916-2020-10093

About the Journal

  • General Information
  • Open Access 
  • Preprint
  • Topics of the journal
  • Editoral Board
  • Editorial Policy
  • Editorial Ethics

Articles Supplying

  • Rules of Manuscripts Supplying
  • Articles Design
  • Article Structure
  • Guidens for Writing an Article
  • Articles Translation

Review of manuscripts

  • Review of manuscripts

Archive

  • 1990s editions
  • 2000s editions
  • 2010s editions
  • 2020s editions
    • Issues for 2020
    • Issues for 2021
    • Issues for 2022
  • Events

_______________________

©2023 - Arid Ecosystems - Weaver Xtreme Theme
↑