Section

Physical geography and biogeography, soil geography and landscape geochemistry

Title

FORECAST EVALUATION OF RECOVERY RATE OF ABANDONED CHERNOZEMS IN THE TRANS-URAL STEPPE AT THE INTRODUCTION OF THE PROTECTED MODE

Сontributors

A. V. Prokhorova, Ph. D. (Biology), Institute of physicochemical and biological problems in soil science RAS,

L. N. Plekhanova, Ph. D. (Biology), Associate Professor, Senior Researcher, Institute of physicochemical and biological problems in soil science of the Russian Academy of Sciences, This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract

The dynamics of cellulose decomposition activity of chernozems in the steppe zone of the Transural Plateau are investigated (a case study of reserve “Arkaim” in the Chelyabinsk Region). The cellulose rate of de-composition of soil biota depends on the nature of the plant cenosis. Peaks of activity of cellulolytic microorganisms are identified in the spring-summer and early- autumn periods. The soils with natural vegetation as well as fallow soils were objects of studies. The observations carried out during the last 10 years after the introduction of the reserved mode. The purpose of the observations was to study natural recovery of soil microbial properties after stopping the agricultural treatment. According to the forecast the integral indicator of soil biological activity, i.e. cellulase activity, will approach the virgin state by 2045, 57 years after the cessation of agricultural use in the form of plowing.

Keywords

cellulose decomposition, natural reconstruction, agricultural treatment, unploughed soils, cellulase activity of the soil.

References

1.  Plekhanova L. N. Nekotoryerezul’tatyrabotposozdanijuKrasnojknigipochvCheljabinskojoblasti. [Some results of the development of the Red Data Book of soils of the Chelyabinsk Region]. VestnikChelGU, 2010. No. 8. P. 29—35. (in Russian)

2.  Plekhanova L. N. Drevnienarushenija v pochvah. [Ancient disturbances in soils]. Priroda 3/2010. pp. 37—43 (in Russian)

3.  Plekhanova L. N. Prirodno-antropogennajajevoljucijapochvrechnyhdolinstepnogoZaural’javovtorojpolovinegolo- cena. [Natural and Anthropogenic Evolution of River Valley Soils in Steppes of the Transural Region in the Second Half of the Holocene]. Ph.D. thesis. Lomonosov Moscow State University, 2004. 24 p. (in Russian)

4.  Mishustin E. N.,Petrova A. N. Opredeleniebiologicheskojaktivnostipochvy. [Identification of the biological activity of the soil]. Mikrobiologija [Microbiology], 1963. Vol. 32. No. 3. pp. 479—483. (in Russian)

5.  Pochvennyjibioticheskij monitoring zapovednyhjekosistem. [Soil and biotic monitoring of protected ecosystems]. Moscow: KMK Scientific Press LTD, 1996. 105 p. (in Russian)

6.  Mironycheva-Tokareva N. P. Sukcessiistepnyhjekosistempripolnomzapovedanii (naprimerezapovednika “Arkaim”). [The succession of steppe ecosystems in full protected mode (the reserve “Arkaim”)]. StepiilesostepiZauralja: mate- rialy k issledovanijam: Trudy muzeja-zapovednika “Arkaim”. [Steppe and forest steppe Trans-Urals: materials for research: Proceedings of Museum “Arkaim.”]. Chelyabinsk: Crocus, 2006. pp. 31—43. (in Russian)

7.  Mendelssohn Irving A., Sorrell Brian K., Brix Hans, Schierup Hans-Henrik, Lorenzen Bent, Maltby Edward. Controls on soil cellulose decomposition along a salinity gradient in a Phragmitesaustralis wetland in Denmark. Aquatic Botany, 1999. Vol. 64. No. 3—4. P. 381—398.

8.  Rabotnov T. A. Jekologijalugovyh trav. [Ecology of meadow grasses]. Moscow: Lomonosov Moscow State University, 1985. 176 p. (in Russian)

9.  Rusanov A. M., Milyakova E. A. Rol’ landshaftnojasimmetrii v formirovaniipochvipochvennogopokrovaPredural’ja. [The role of landscape in the form of asymmetry of soils and soil cover in the Cis-Urals]. Vestnik OGU, 2005. No. 4. P. 108—113. (in Russian)

10.       Smirnova O. V., Zaugolnova L. B., Ermakova I. M. and others. Cenopopuljaciirastenij. Osnovnyeponjatijaistruktura. [Cenopopulations plants. Basic concepts and structure]. Moscow: Nauka, 1976. 217 p. (inRussian)

11.       Prikhod’ko V. E., • Manakhova E. V.,’ Manakhov D. V.,’ L. N. Plekhanova,’ Zakharova Y. V. Izmeneniesostojanijagu- musapochvstepnogoZaural’ja v zapovednomrezhime. [Changes of the humus status of soils in the nature reserve of the Trans-Ural steppe zone]. VestnikMoskovskogouniversiteta. Serija 17: Pochvoved, Mar 2006. P. 10—17. (inRussian)