April 2016, № 4 (192)

Pavleychik V.M., Mjachina K.V. FEATURES OF SURFACE THERMAL REGIME AFTER STEPPE FIRES BASED ON LANDSAT IMAGESFires are an integral events of the steppe regions. At the same time, a lot of diverse geo-systemic consequences of grass fires still are not studied. Such studies are especially relevant in the conditions of fire events revitalization that observed in the last 15—20 years. The analysis of microclimatic characteristics steppe ecosystems exposed to fires and are in the process of restoration succession is proposed in the article. The main estimated parameter is the surface temperature; its data obtained as a result of "thermal" Landsat bands satellite imagery interpretation. To get any information about the peculiarities of the temperature regime for the burnt areas and the duration of the recovery processes used a series of satellite images that covering the period before and after fires of 2009 and 2014 that was happened in the key area between the Ural and Ilek rivers. Our results that obtained on the basis of post-fire satellite images show the temperature differences usually do not more than 4 °C in the adjacent (burnt and not burnt) areas in the warm seasons of the year and have been declining by the end of the second vegetation year. In addition, it found that the increased thermal background of burnt areas (especially late-autumn fires) in combination with the lack of dense vegetation leads to a drastic reduction in capacity and duration of snow cover, and, respectively, leads to the deterioration of spring moisture conditions. Analysis of the landscape and the territory of habitat structure revealed the main factor determining the duration of recovery processes is a constant high hydration. The proposed studies show the thermal regime of the Earth's surface is one of the indicators that might use as the basis to formulate indirect conclusions about the condition and dynamics of vegetation.Key words: steppe fires, burned area, temperature, recovery processes, Landsat satellite images.

Download

References:

1. Tishkov A.A. Pozhary v stepjah i savannah // Voprosy stepevedenija. Vyp. VII. Orenburg, 2009.  — S. 79-83.

2. Stepnye pozhary i upravlenie pozharnoj situaciej v stepnyh OOPT: jekologicheskie i prirodoohrannye aspekty. Analiticheskij obzor.  — M.: Izd-vo Centra ohrany dikoj prirody, 2015.  — 144 s.

3. Rodin L.E. Pirogennyj faktor i rastitel'nost' aridnoj zony // Botanicheskij zhurnal, 1981.  — Vyp. 66.  — S.1673-1684.

4. Oparin M.L., Oparina O.S. Vlijanie palov na dinamiku stepnoj rastitel'nosti // Povolzhskij jekologicheskij zhurnal, 2003.  — №2.  — C.158-171.

5. Il'ina V.N. Pirogennnoe vozdejstvie na rastitel'nyj pokrov // Samarskaja Luka: problemy regional'noj i global'noj jekologii.  — Samara, 2011.  — T.20, №2.  — S.4-30

6. Bartalev S.A. i dr. Issledovanie vozmozhnostej ocenki sostojanija povrezhdennyh pozharami lesov po dannym mnogospektral'nyh sputnikovyh izmerenij // Sovremennye problemy distancionnogo zondirovanija Zemli iz kosmosa.  — 2010.  — T. 7.  — №. 3.  — S. 215-225.

7. Kuular H.B. Ocenka garej Ujukskogo hrebta na osnove dannyh Landsat // Sovremennye problemy distancionnogo zondirovanija Zemli iz kosmosa.  — 2013.  — T. 10.  — №. 4.  — S. 239-244.

8. Ukrainskij P.A. Dinamika spektral'nyh svojstv zarastajushhih travjanyh garej // Sovremennye problemy distancionnogo zondirovanija Zemli iz kosmosa. —2013.  — T. 10.  — №4.  — S. 229-238

9. Wimberly M.C., Reilly M.J. Assessment of fire severity and species diversity in the southern Appalachians using Landsat TM and ETM+ imagery // Remote Sensing of Environment.  — 2007.  — Т. 108.  — №. 2.  — С. 189-197.

10. Veraverbeke S. Lhermitte, S., Verstraeten, W.W., & Goossens, R. The temporal dimension of differenced Normalized Burn Ratio (dNBR) fire/burn severity studies: the case of the large 2007 Peloponnese wildfires in Greece // Remote Sensing of Environment.  — 2010.  — Т. 114.  — №. 11.  — P. 2548-2563.

11. Zhang Y., Balzter, H., Zou, C., Xu, H., & Tang, F. Characterizing bi-temporal patterns of land surface temperature using landscape metrics based on sub-pixel classifications from Landsat TM/ETM+ // International Journal of Applied Earth Observation and Geoinformation.  — 2015.  — Т. 42.  — P. 87-96.

12. Vlassova L., Pйrez-Cabello F. Effects of post-fire wood management strategies on vegetation recovery and land surface temperature (LST) estimated from Landsat images // International Journal of Applied Earth Observation and Geoinformation.  — 2016.  — Т. 44.  — P. 171-183.

13. Pavlejchik V.M. Prostranstvenno-vremennaja struktura pozharov na zapovednom uchastke "Burtinskaja step'" // Bjulleten' Orenburgskogo nauchnogo centra UrO RAN, 2015.  — Vyp. 4.  — P.1-11 [Jelektronnyj resurs] (URL: http://elmag.uran.ru:9673/magazine/ Numbers/2015-4/Articles/ PVM-2015-4.pdf)

14. Dubinin M.Ju., Lushhekina A.A., Radelof F.K. Ocenka sovremennoj dinamiki pozharov v aridnyh jekosistemah po materialam kosmicheskoj semki (na primere Chernyh Zemel') // Aridnye ekosistemy, 2010.  — T.16, №3 (43).  — S.5-16

15. Weng Q., Fu P., Gao F. Generating daily land surface temperature at Landsat resolution by fusing Landsat and MODIS data // Remote Sensing of Environment.  — 2014.  — Т. 145.  — P. 55-67.

16. Ivanov V.V. Stepi Zapadnogo Kazahstana v svjazi s dinamikoj ih pokrova.  — M.-L.: AN SSSR, 1958.  — 228 s.

17. Analiz otechestvennogo i zarubezhnogo opyta upravlenija pozharami v stepjah i svjazannyh s nimi jekosistemah, v chastnosti, v uslovijah OOPT / Bujvolov Ju.A, Bykova E.P. i dr. // [Jelektronnyj resurs] (URL: http://www.biodiversity.ru/programs/steppe/docs/pozhar/fires-in-steppe_review 21012012.pdf)

About this article

Authors: Myachina K.V., Pavleychik V.M.

Year: 2016

Editor-in-chief

Sergey Aleksandrovich
MIROSHNIKOV

© Электронное периодическое издание: ВЕСТНИК ОГУ on-line (VESTNIK OSU on-line), ISSN on-line 1814-6465
Зарегистрировано в Федеральной службе по надзору в сфере связи, информационных технологий и массовых коммуникаций
Свидетельство о регистрации СМИ: Эл № ФС77-37678 от 29 сентября 2009 г.
Учредитель: Оренбургский государственный университет (ОГУ)
Главный редактор: С.А. Мирошников
Адрес редакции: 460018, г. Оренбург, проспект Победы, д. 13, к. 2335
Тел./факс: (3532)37-27-78 E-mail: vestnik@mail.osu.ru