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Three-dimensional structure of tundra vegetation cover dominated by sedges. P. 132–140

Версия для печати

Section: Geosciences

UDC

528.855+581.526.533:[58.009+58.087]

DOI

10.17238/issn2541-8416.2018.18.4.132

Authors

IV Matelenok1, VV Melentyev1
1 St Petersburg State University of Aerospace
Instrumentation (Saint Petersburg, Russian Federation)
Corresponding author: Igor Matelenok (igor_matelenok@mail.ru)

Abstract

Modelling of radiation transfer through natural multilayer media is relevant for many climatological, hydrological and ecological issues. The possibility of using the models is determined by the comprehensiveness of the information on the properties and structure of certain layers: ground, vegetation, atmosphere. Three-dimensional spatial organisation of tundra vegetation cover is understudied compared to vegetation structure of the boreal zone. In the scope of the research, the structure of sedge-tundra vegetation cover in the Nenets Autonomous Area and the Murmansk Region was investigated using specialised hardware-software system which allows to take photos of the cover from different angles, construct virtual three-dimensional models and obtain the values of parameters characterising the structure. The field survey of the sites was carried out in August 2016 and 2017. Phytoelement angle distributions obtained differ from standard erectophile distribution frequently used for modelling orientation of phytoelements in cover formed by grasses/sedges. The shape of phytoelement angle distribution varies from site to site depending on the dominant species. Experiments on fitting real distributions by different functions established that the generalised shape of the distribution in the studied cover is best described by a rotated-ellipsoidal function with a parameter equal to 2.69. Information obtained on the structure of the vegetation cover can be used in modelling microwaves and solar radiation propagation.

Keywords

Arctic, leaf angle distribution, radiation transfer, remote sensing, three-dimensional structure, tundra ecosystems, vegetation cover
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References

  1. Annual Data (1989–2015) Annual data concerning the regime and resources of surface water of the land – Part 1, Rivers and channels (Issue 8, Vol. 9, Edition 7). Gidrometeoizdat, Leningrad, 240 pp. https://doi.org/10.1016/0022-1694(94)90033-7
  2. Burn DH (1994) Hydrologic effects of climatic change in west-central Canada. Journal of Hydrology 160(1/4): 53–62.
  3. Ershov D (1989) Geocryology in the USSR. Eastern Siberia and the Far East. Nedra, Moscow, 515 pp.
  4. GOST (1973) GOST Standard 19179-73 – Hydrology of the land. Terms and definitions.
  5. Horton RE (1945) Erosional development of streams and their drainage basins: hydro-physical approach to quantitative morphology. Geological Society of America Bulletin 56(3): 275–370. https://doi.org/10.1130/0016-7606(1945)56[275:EDOSAT] 2.0.CO;2
  6. Ippolitov II (2004) Contemporary environmental and climate measurements in Siberia – Variation in annual average ground temperatures and air pressure. In: Ippolitov II, Kabanov MV, Komarov AI (Eds). Meteorology and Hydrology 8: 90–96.
  7. Mikhailov VM (1993) The correlation between the thermal regime of thawed lenses in river valleys and open water courses. In: Mikhailov VM (Ed.) Abstract from CSc (Geography) thesis. Yakutsk, 19 pp.
  8. Mikhailov VM (1999) The specifics of permafrost-induced hydrogeological behaviour of a large lateral thawed lens in the basin of the Omolon River and related landscape features. In: Mikhailov VM, Ukhov NV. The Earth’s Cryosphere 3(3): 50–58.
  9. Pestereva NM (1998) Current changes in the climate of the Okhotsk Sea region. In: Pestereva NM, Pushkina EG (Eds) Works of the Arctic Regional Centre 1: 11–30.
  10. Rokhmistrov VL (2004) Small rivers of the Yaroslavl Region in the Volga River basin. VVO Publishers, Yaroslavl, 54 pp.
  11. Strahler AN (1952) Hypsometric (area-altitude) analysis of erosional topology. Geological Society of America Bulletin 63(11): 1117–1142. https://doi.org/10.1130/0016-7606(1952) 63[1117:HAAOET]2.0.CO;2
  12. Strahler AN (1957) Quantitative analysis of watershed geomorphology. Transactions of the American Geophysical Union 38(6): 913–920. https://doi.org/10.1029/ TR038i006p00913
  13. The geology of alluvial deposits (1979) The geology of alluvial deposits of gold in the North-East of the USSR. Magadan Book Publishing, Magadan, 120 pp.
  14. Ukhov NV (1999) Geoecological aspects of land improvement in the North-East of Russia. In: Ukhov NV, Pugachev AA (Eds) Geodynamics and Geoecology. Proceeds of the International Conference. Arkhangelsk, 386–388.
  15. Vakulenko NV (2015) Aspects of global climate change. In: Vakulenko NV, Nigmatulin RI, Sonechkin DM (Eds) Meteorology and Hydrology 40(9): 629–634.
  16. Woo M (1990) Consequences of climatic change for hydrology in permafrost zones. Journal of Cold Regions Engineering 4(1): 15–20. https://doi.org/10.1061/(ASCE) 0887-381X(1990)4:1(15)
  17. Zasypkina IA (2016) Hydrological and thermal conditions of the Talok Stream (Upper Kolyma River) and their correlation with climate changes. In: Zasypkina IA, Samokhvalov VL, Ukhov NV (Eds) Achievements of Modern Science and Education (Vol. 7, No. 11). 118–120.