9 research outputs found
Influence of precipitation on CO 2 soil emission in pine forests of the Central Siberia boreal zone
ΠΠΎΡΠ΅Π°Π»ΡΠ½ΡΠ΅ Π»Π΅ΡΠ° Π² Π‘ΠΈΠ±ΠΈΡΠΈ Π·Π°Π½ΠΈΠΌΠ°ΡΡ Π±ΠΎΠ»Π΅Π΅ 70% ΠΏΠ»ΠΎΡΠ°Π΄ΠΈ ΠΈΡΡΠ»Π΅Π΄ΡΠ΅ΠΌΠΎΠ³ΠΎ ΡΠ΅Π³ΠΈΠΎΠ½Π°. ΠΡΠΈ ΡΠΊΠΎΡΠΈΡΡΠ΅ΠΌΡ ΡΠ²Π»ΡΡΡΡΡ ΠΎΡΠ΅Π½Ρ ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΡΠΌΠΈ ΠΊ ΠΊΠ»ΠΈΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡΠΌ ΠΈ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»ΡΡΡ ΡΠΎΠ±ΠΎΠΉ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΡΠΉ ΠΈΡΡΠΎΡΠ½ΠΈΠΊ ΡΠ³Π»Π΅ΡΠΎΠ΄Π°. Π Π»Π΅ΡΠ½ΡΡ
ΡΠΊΠΎΡΠΈΡΡΠ΅ΠΌΠ°Ρ
, Π² ΠΎΠ±ΡΠ΅ΠΌ ΡΠΊΠΎΡΠΈΡΡΠ΅ΠΌΠ½ΠΎΠΌ Π΄ΡΡ
Π°Π½ΠΈΠΈ ΠΏΡΠ΅ΠΎΠ±Π»Π°Π΄Π°Π΅Ρ Π΄ΡΡ
Π°Π½ΠΈΠ΅ ΠΏΠΎΡΠ²Ρ, Π½Π° ΠΊΠΎΡΠΎΡΠΎΠ΅ ΠΏΡΠΈΡ
ΠΎΠ΄ΠΈΡΡΡ ΠΏΡΠΈΠΌΠ΅ΡΠ½ΠΎ 70% ΠΎΡ ΡΡΠΎΠ³ΠΎ ΠΏΠΎΡΠΎΠΊΠ°. ΠΠ»ΠΎΠ±Π°Π»ΡΠ½ΡΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΠΏΡΠ΅Π΄ΡΠΊΠ°Π·ΡΠ²Π°ΡΡ, ΡΡΠΎ Π΄ΡΡ
Π°Π½ΠΈΠ΅ ΠΏΠΎΡΠ²Ρ ΡΠ²Π΅Π»ΠΈΡΠΈΡΡΡ Π±ΠΎΠ»ΡΡΠ΅, ΡΠ΅ΠΌ ΠΎΠ±ΡΠ°Ρ ΡΠΈΡΡΠ°Ρ ΠΏΠ΅ΡΠ²ΠΈΡΠ½Π°Ρ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠ²Π½ΠΎΡΡΡ Π² ΠΎΡΠ²Π΅Ρ Π½Π° ΠΏΠΎΡΠ΅ΠΏΠ»Π΅Π½ΠΈΠ΅ ΠΊΠ»ΠΈΠΌΠ°ΡΠ° ΠΈ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π° ΠΎΡΠ°Π΄ΠΊΠΎΠ². ΠΠ°ΠΊ ΡΠ»Π΅Π΄ΡΡΠ²ΠΈΠ΅, ΠΎΠΆΠΈΠ΄Π°Π΅ΡΡΡ, ΡΡΠΎ ΡΠΌΠ΅Π½ΡΡΠΈΡΡΡ ΡΠ²ΡΠ·ΡΠ²Π°Π½ΠΈΠ΅ ΡΠ³Π»Π΅ΡΠΎΠ΄Π° Π½Π°Π·Π΅ΠΌΠ½ΡΠΌΠΈ ΡΠΊΠΎΡΠΈΡΡΠ΅ΠΌΠ°ΠΌΠΈ. ΠΠ΄Π½Π°ΠΊΠΎ Π² Π±ΠΎΡΠ΅Π°Π»ΡΠ½ΡΡ
Π»Π΅ΡΠ°Ρ
Π‘ΠΈΠ±ΠΈΡΠΈ Π²ΡΠ΅ Π΅ΡΠ΅ ΡΡΡΠ΅ΡΡΠ²ΡΠ΅Ρ ΠΏΡΠΎΠ±Π΅Π» Π² ΠΏΠΎΠ½ΠΈΠΌΠ°Π½ΠΈΠΈ Π±ΡΠ΄ΡΡΠ΅ΠΉ ΡΠ΅Π°ΠΊΡΠΈΠΈ ΠΏΠΎΡΠ²Π΅Π½Π½ΠΎΠΉ ΡΠΌΠΈΡΡΠΈΠΈ Π½Π° Π·Π°ΡΡΡ
Ρ ΠΈΠ»ΠΈ ΡΡΠ»ΠΎΠ²ΠΈΡ ΠΏΠ΅ΡΠ΅ΡΠ²Π»Π°ΠΆΠ½Π΅Π½ΠΈΡ. Π Π½Π°ΡΠ΅ΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΈ ΠΌΡ ΠΎΡΠ΅Π½ΠΈΠ»ΠΈ, ΠΊΠ°ΠΊ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠ΅ ΡΡΠ»ΠΎΠ²ΠΈΡ ΡΠ²Π»Π°ΠΆΠ½Π΅Π½ΠΈΡ ΠΌΠΎΠ³ΡΡ ΠΈΠ·ΠΌΠ΅Π½ΠΈΡΡ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΠΎΡΠ²Π΅Π½Π½ΠΎΠΉ ΡΠΌΠΈΡΡΠΈΠΈ Π² Π±ΠΎΡΠ΅Π°Π»ΡΠ½ΠΎΠΉ Π·ΠΎΠ½Π΅. ΠΠ· Π΄Π°Π½Π½ΡΡ
ΠΏΠΎΠ»Π΅Π²ΡΡ
Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΠΉ, ΠΌΡ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΠΈΠ»ΠΈ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ ΡΡΠ»ΠΎΠ²ΠΈΡ Π²Π»Π°ΠΆΠ½ΠΎΡΡΠΈ ΠΏΠΎΡΠ²Ρ. ΠΠ°ΠΈΠ±ΠΎΠ»ΡΡΠ°Ρ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΡ ΠΌΠ΅ΠΆΠ΄Ρ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠΎΠΉ ΠΏΠΎΡΠ²Ρ ΠΈ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎΡΡΡΡ ΠΏΠΎΡΠ²Π΅Π½Π½ΠΎΠΉ ΡΠΌΠΈΡΡΠΈΠΈ Π±ΡΠ»Π° ΠΏΠΎΠ»ΡΡΠ΅Π½Π° ΠΏΡΠΈ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΡΡ
ΡΡΠ»ΠΎΠ²ΠΈΡΡ
Π²Π»Π°ΠΆΠ½ΠΎΡΡΠΈ ΠΏΠΎΡΠ²Ρ
Influence of precipitation on Π‘Π2 soil emission in pine forests of the Central Siberia boreal zone
Dynamics of the CO2 Fluxes from the Soil Surface in Pine Forests in Central Siberia
Π Π»Π΅ΡΠ½ΡΡ
ΡΠΊΠΎΡΠΈΡΡΠ΅ΠΌΠ°Ρ
Π½Π° ΠΏΠΎΡΠΎΠΊ Π‘Π2 ΠΈΠ· ΠΏΠΎΡΠ²Ρ ΠΌΠΎΠΆΠ΅Ρ ΠΏΡΠΈΡ
ΠΎΠ΄ΠΈΡΡΡΡ 40β80 % ΠΎΡ ΡΡΠΌΠΌΠ°ΡΠ½ΠΎΠ³ΠΎ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π° Π²ΡΡΠ²ΠΎΠ±ΠΎΠΆΠ΄Π΅Π½Π½ΠΎΠ³ΠΎ Π‘Π2. ΠΠΎΠΌΠΈΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΠΎΡΠ΅ΡΡ ΡΠ³Π»Π΅ΡΠΎΠ΄Π° Π½Π° Π΄ΡΡ
Π°Π½ΠΈΠ΅ Π½Π°Π΄ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠ²Π½ΠΎΡΡΡΡ ΠΌΠΎΠΆΠ΅Ρ ΠΈΠ·ΠΌΠ΅Π½ΠΈΡΡ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ ΡΠΎΠ»Ρ ΡΠΊΠΎΡΠΈΡΡΠ΅ΠΌΡ ΠΈ ΠΏΡΠ΅Π²ΡΠ°ΡΠΈΡΡ Π΅Π΅ ΠΈΠ· ΡΡΠΎΠΊΠ° Π² ΠΈΡΡΠΎΡΠ½ΠΈΠΊ ΡΠ³Π»Π΅ΡΠΎΠ΄Π°. ΠΠ΄Π½ΠΈΠΌ ΠΈΠ· Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ Π²Π°ΠΆΠ½ΡΡ
Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΠΉ ΠΏΠΎ ΠΈΠ·ΡΡΠ΅Π½ΠΈΡ Π΄ΡΡ
Π°Π½ΠΈΡ ΠΏΠΎΡΠ²Ρ ΡΡΠΈΡΠ°Π΅ΡΡΡ Π²ΡΡΠ²Π»Π΅Π½ΠΈΠ΅ Π΅Π΄ΠΈΠ½ΠΎΠΉ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΡ ΠΏΠΎΡΠΎΠΊΠΎΠ² Π‘Π2 Ρ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΏΠΎΡΠ²Ρ ΠΈ Π΅Π΅ ΡΡΠ°Π½Π΄Π°ΡΡΠΈΠ·Π°ΡΠΈΡ. Π Π½Π°ΡΠ΅ΠΉ ΡΠ°Π±ΠΎΡΠ΅ Π±ΡΠ»ΠΎ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ΅Π·ΠΎΠ½Π½ΠΎΠΉ ΠΈ ΡΡΡΠΎΡΠ½ΠΎΠΉ Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ ΡΠΌΠΈΡΡΠΈΠΈ Π‘Π2 Π΄Π»Ρ ΡΠ°Π·Π½ΡΡ
ΡΠΈΠΏΠΎΠ² ΠΏΠΎΠ΄ΡΡΠΈΠ»Π°ΡΡΠ΅ΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΌΠ΅ΡΠΎΠ΄Π° Π·Π°ΠΊΡΡΡΡΡ
ΠΊΠ°ΠΌΠ΅Ρ Π΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΈΠΏΠ° (DC-ΠΌΠ΅ΡΠΎΠ΄) Π² ΠΏΡΠ΅Π΄Π΅Π»Π°Ρ
ΡΡΠ΅Π΄Π½Π΅ΡΠ°Π΅ΠΆΠ½ΡΡ
Π»Π΅ΡΠΎΠ² Π‘ΠΈΠ±ΠΈΡΠΈ. ΠΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΡ ΠΏΠΎΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ Π΄ΡΡ
Π°Π½ΠΈΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡ Π² ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ Π²Π΅Π³Π΅ΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π° Ρ ΠΈΡΠ½Ρ Π΄ΠΎ ΠΎΠΊΡΡΠ±ΡΡ 2013 Π³. ΠΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ Π²Π΅Π»ΠΈΡΠΈΠ½Ρ ΡΠΌΠΈΡΡΠΈΠΈ Π‘Π2 ΠΏΡΠΈΡ
ΠΎΠ΄ΠΈΠ»ΠΈΡΡ Π½Π° Π²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠΉ ΠΏΡΠΎΠΌΠ΅ΠΆΡΡΠΎΠΊ ΡΠΎ Π²ΡΠΎΡΠΎΠΉ ΠΏΠΎΠ»ΠΎΠ²ΠΈΠ½Ρ ΠΈΡΠ»Ρ ΠΏΠΎ ΠΊΠΎΠ½Π΅Ρ Π°Π²Π³ΡΡΡΠ° 2013 Π³. ΠΠ°Π»ΠΈΡΠΈΠ΅ Π½Π°ΠΏΠΎΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΠΎΠ²Π° ΡΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎ Π²Π»ΠΈΡΠ΅Ρ Π½Π° Π²Π΅Π»ΠΈΡΠΈΠ½Ρ ΠΏΠΎΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ Π΄ΡΡ
Π°Π½ΠΈΡ. ΠΠ° ΡΡΠ°ΡΡΠΊΠ΅ Π±Π΅Π· Π½Π°ΠΏΠΎΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΠΎΠ²Π° ΡΠ»ΡΠΊΡΡΠ°ΡΠΈΠΈ ΠΏΠΎΡΠΎΠΊΠΎΠ² ΠΌΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ (0.11 β 1.24 ΞΌΠΌΠΎΠ»Ρ CO2 ΠΌ-2 Ρ-1), Π° ΠΈΡ
Π²Π΅Π»ΠΈΡΠΈΠ½Π° Π² ΡΡΠ΅Π΄Π½Π΅ΠΌ Π² 8 ΡΠ°Π· Π½ΠΈΠΆΠ΅, ΡΠ΅ΠΌ Π½Π° Π»Π΅ΡΠΎΠΏΠΎΠΊΡΡΡΡΡ
ΡΡΠ°ΡΡΠΊΠ°Ρ
. ΠΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ ΠΏΠΎΡΠΎΠΊΠΈ Π‘Π2 Ρ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΏΠΎΡΠ²Ρ Π½Π°Π±Π»ΡΠ΄Π°ΡΡΡΡ Π² ΡΠΌΠ΅ΡΠ°Π½Π½ΠΎΠΌ Π»Π΅ΡΡ ΠΈ Π²Π°ΡΡΠΈΡΡΡΡ ΠΎΡ 2.31 Π΄ΠΎ 8.41 ΞΌΠΌΠΎΠ»Ρ CO2 ΠΌ-2 Ρ-1. ΠΠ°ΠΆΠ½ΡΠΌ ΡΡΠ»ΠΎΠ²ΠΈΠ΅ΠΌ Π΄Π»Ρ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ Π΄ΠΎΡΡΠΎΠ²Π΅ΡΠ½ΡΡ
ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ°ΡΡΠΎΡΠ° ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΠΉ. Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΏΡΠΈ ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΡΡ
Ρ ΡΠ°ΡΡΠΎΡΠΎΠΉ ΠΏΡΡΡ ΠΈ Π±ΠΎΠ»Π΅Π΅ ΡΠ°Π· Π² ΠΌΠ΅ΡΡΡ ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½Ρ Π²Π°ΡΠΈΠ°ΡΠΈΠΈ Π½Π΅ ΠΏΡΠ΅Π²ΡΡΠ°Π΅Ρ 10 %, ΡΡΠΎ ΡΠ²ΠΈΠ΄Π΅ΡΠ΅Π»ΡΡΡΠ²ΡΠ΅Ρ ΠΎ Π²ΡΡΠΎΠΊΠΎΠΉ Π΄ΠΎΡΡΠΎΠ²Π΅ΡΠ½ΠΎΡΡΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
Π·Π½Π°ΡΠ΅Π½ΠΈΠΉIn forest ecosystems, the CO2 efflux from the soil may account for 40β80 % of the total amount of released CO2. Domination carbon breath losses over productivity may change the functional role of the ecosystem and transform it from a carbon sink to source. One of the most important field of study in soil respiration research is to identify a uniform methodology for measuring CO2 fluxes from the soil surface and its standardization. In our study, we assessed the investigation of the temporal and spatial dynamics of CO2 flux from the soil surface using the method based on the dynamic closed chambers in the middle taiga forests of Central Siberia. Soil respiration measurements were carried out during the growing season from June to October 2013. The period, when the soil respiration reached to maximum development β the second half of July to the end of August 2013. The ground cover substantially affected the value of soil respiration. The smallest value observed at the site without any plant cover β pp_sand (0.11β1.24 ΞΌmol CO2 m-2 s-1), which is 8 times lower than in the forested areas. The greatest values were attended at the site with mixed forest ranged from 2.31 to 8.41 ΞΌmol CO2 m-2 s-1. An important condition to obtain reliable results is the frequency of measurements. It was found that the measurements with a frequency of 5 or more times per month does not exceed the variation coefficient of 10 %, which indicates high reliability of the obtained value
PHYTOMASS STOCK AND STRUCTURE IN DERIVATIVE FOREST STAND OF CENTRAL SIBERIA
Π’Π΅ΠΊΡΡ ΡΡΠ°ΡΡΠΈ Π½Π΅ ΠΏΡΠ±Π»ΠΈΠΊΡΠ΅ΡΡΡ Π² ΠΎΡΠΊΡΡΡΠΎΠΌ Π΄ΠΎΡΡΡΠΏΠ΅ Π² ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΈΠΈ Ρ ΠΏΠΎΠ»ΠΈΡΠΈΠΊΠΎΠΉ ΠΆΡΡΠ½Π°Π»Π°
The Pulses of Soil CO<sub>2</sub> Emission in Response to Rainfall Events in Central Siberia: Revisiting the Overall Frost-Free Season CO<sub>2</sub> Flux
Boreal forests nowadays act as a sink for atmospheric carbon dioxide; however, their sequestration capacity is highly sensitive to weather conditions and, specifically to ongoing climate warming. Extreme weather events such as heavy rainfalls or, conversely, heat waves during the growing season might perturb the ecosystem carbon balance and convert them to an additional CO2 source. Thus, there is an urgent need to revise ecosystem carbon fluxes in vast Siberian taiga ecosystems as influenced by extreme weather events. In this study, we focused on the soil CO2 pulses appearing after the rainfall events and quantification of their input to the seasonal cumulative CO2 efflux in the boreal forests in Central Siberia. Seasonal measurements of soil CO2 fluxes (both soil respiration and net soil exchange) were conducted during three consecutive frost-free seasons using the dynamic chamber method. Seasonal dynamics of net soil exchange fluxes demonstrated positive values, reflecting that soil respiration rates exceeded CO2 uptake in the forest floor vegetation layer. Moreover, the heavy rains caused a rapid pulse of soil emissions and, as a consequence, the release of additional amounts of CO2 from the soil into the atmosphere. A single rain event may cause a 5β11-fold increase of the NSE flux compared to the pre-rainfall values. The input of CO2 pulses to the seasonal cumulative efflux varied from near zero to 39% depending on precipitation patterns of a particular season. These findings emphasize the critical need for more frequent measurements of soil CO2 fluxes throughout the growing season which capture the CO2 pulses induced by rain events. This approach has inevitable importance for the accurate assessment of seasonal CO2 soil emissions and adequate predictions of response of boreal pine forests to climatic changes
The Impact of Climatic Factors on CΠ2 Emissions from Soils of Middle-Taiga Forests in Central Siberia: Emission as a Function of Soil Temperature and Moisture
Π’Π΅ΠΊΡΡ ΡΡΠ°ΡΡΠΈ Π½Π΅ ΠΏΡΠ±Π»ΠΈΠΊΡΠ΅ΡΡΡ Π² ΠΎΡΠΊΡΡΡΠΎΠΌ Π΄ΠΎΡΡΡΠΏΠ΅ Π² ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΈΠΈ Ρ ΠΏΠΎΠ»ΠΈΡΠΈΠΊΠΎΠΉ ΠΆΡΡΠ½Π°Π»Π°.Soil CO2 emission is one of the most important components of the global carbon cycle. This study analyzes the seasonal dynamics of soil emission for various land cover types in the middle taiga subzone of central Siberia during five growing seasons. It is shown that, throughout a vast area covered by pine forests and their derivatives formed on sandy soils, seasonal CO2 emission values are determined primarily by the moisture conditions and only secondarily by the temperature regime and ecosystem type. The effect of the forest type is manifested only under the most favorable moisture conditions. A new approach is proposed: divide the growing season into dry and moist periods depending on the threshold soil moisture for areas with different vegetation types
Dynamics of the CO2 Fluxes from the Soil Surface in Pine Forests in Central Siberia
Π Π»Π΅ΡΠ½ΡΡ
ΡΠΊΠΎΡΠΈΡΡΠ΅ΠΌΠ°Ρ
Π½Π° ΠΏΠΎΡΠΎΠΊ Π‘Π2 ΠΈΠ· ΠΏΠΎΡΠ²Ρ ΠΌΠΎΠΆΠ΅Ρ ΠΏΡΠΈΡ
ΠΎΠ΄ΠΈΡΡΡΡ 40β80 % ΠΎΡ ΡΡΠΌΠΌΠ°ΡΠ½ΠΎΠ³ΠΎ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π° Π²ΡΡΠ²ΠΎΠ±ΠΎΠΆΠ΄Π΅Π½Π½ΠΎΠ³ΠΎ Π‘Π2. ΠΠΎΠΌΠΈΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΠΎΡΠ΅ΡΡ ΡΠ³Π»Π΅ΡΠΎΠ΄Π° Π½Π° Π΄ΡΡ
Π°Π½ΠΈΠ΅ Π½Π°Π΄ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠ²Π½ΠΎΡΡΡΡ ΠΌΠΎΠΆΠ΅Ρ ΠΈΠ·ΠΌΠ΅Π½ΠΈΡΡ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ ΡΠΎΠ»Ρ ΡΠΊΠΎΡΠΈΡΡΠ΅ΠΌΡ ΠΈ ΠΏΡΠ΅Π²ΡΠ°ΡΠΈΡΡ Π΅Π΅ ΠΈΠ· ΡΡΠΎΠΊΠ° Π² ΠΈΡΡΠΎΡΠ½ΠΈΠΊ ΡΠ³Π»Π΅ΡΠΎΠ΄Π°. ΠΠ΄Π½ΠΈΠΌ ΠΈΠ· Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ Π²Π°ΠΆΠ½ΡΡ
Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΠΉ ΠΏΠΎ ΠΈΠ·ΡΡΠ΅Π½ΠΈΡ Π΄ΡΡ
Π°Π½ΠΈΡ ΠΏΠΎΡΠ²Ρ ΡΡΠΈΡΠ°Π΅ΡΡΡ Π²ΡΡΠ²Π»Π΅Π½ΠΈΠ΅ Π΅Π΄ΠΈΠ½ΠΎΠΉ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΡ ΠΏΠΎΡΠΎΠΊΠΎΠ² Π‘Π2 Ρ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΏΠΎΡΠ²Ρ ΠΈ Π΅Π΅ ΡΡΠ°Π½Π΄Π°ΡΡΠΈΠ·Π°ΡΠΈΡ. Π Π½Π°ΡΠ΅ΠΉ ΡΠ°Π±ΠΎΡΠ΅ Π±ΡΠ»ΠΎ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ΅Π·ΠΎΠ½Π½ΠΎΠΉ ΠΈ ΡΡΡΠΎΡΠ½ΠΎΠΉ Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ ΡΠΌΠΈΡΡΠΈΠΈ Π‘Π2 Π΄Π»Ρ ΡΠ°Π·Π½ΡΡ
ΡΠΈΠΏΠΎΠ² ΠΏΠΎΠ΄ΡΡΠΈΠ»Π°ΡΡΠ΅ΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΌΠ΅ΡΠΎΠ΄Π° Π·Π°ΠΊΡΡΡΡΡ
ΠΊΠ°ΠΌΠ΅Ρ Π΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΈΠΏΠ° (DC-ΠΌΠ΅ΡΠΎΠ΄) Π² ΠΏΡΠ΅Π΄Π΅Π»Π°Ρ
ΡΡΠ΅Π΄Π½Π΅ΡΠ°Π΅ΠΆΠ½ΡΡ
Π»Π΅ΡΠΎΠ² Π‘ΠΈΠ±ΠΈΡΠΈ. ΠΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΡ ΠΏΠΎΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ Π΄ΡΡ
Π°Π½ΠΈΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡ Π² ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ Π²Π΅Π³Π΅ΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π° Ρ ΠΈΡΠ½Ρ Π΄ΠΎ ΠΎΠΊΡΡΠ±ΡΡ 2013 Π³. ΠΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ Π²Π΅Π»ΠΈΡΠΈΠ½Ρ ΡΠΌΠΈΡΡΠΈΠΈ Π‘Π2 ΠΏΡΠΈΡ
ΠΎΠ΄ΠΈΠ»ΠΈΡΡ Π½Π° Π²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠΉ ΠΏΡΠΎΠΌΠ΅ΠΆΡΡΠΎΠΊ ΡΠΎ Π²ΡΠΎΡΠΎΠΉ ΠΏΠΎΠ»ΠΎΠ²ΠΈΠ½Ρ ΠΈΡΠ»Ρ ΠΏΠΎ ΠΊΠΎΠ½Π΅Ρ Π°Π²Π³ΡΡΡΠ° 2013 Π³. ΠΠ°Π»ΠΈΡΠΈΠ΅ Π½Π°ΠΏΠΎΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΠΎΠ²Π° ΡΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎ Π²Π»ΠΈΡΠ΅Ρ Π½Π° Π²Π΅Π»ΠΈΡΠΈΠ½Ρ ΠΏΠΎΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ Π΄ΡΡ
Π°Π½ΠΈΡ. ΠΠ° ΡΡΠ°ΡΡΠΊΠ΅ Π±Π΅Π· Π½Π°ΠΏΠΎΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΠΎΠ²Π° ΡΠ»ΡΠΊΡΡΠ°ΡΠΈΠΈ ΠΏΠΎΡΠΎΠΊΠΎΠ² ΠΌΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ (0.11 β 1.24 ΞΌΠΌΠΎΠ»Ρ CO2 ΠΌ-2 Ρ-1), Π° ΠΈΡ
Π²Π΅Π»ΠΈΡΠΈΠ½Π° Π² ΡΡΠ΅Π΄Π½Π΅ΠΌ Π² 8 ΡΠ°Π· Π½ΠΈΠΆΠ΅, ΡΠ΅ΠΌ Π½Π° Π»Π΅ΡΠΎΠΏΠΎΠΊΡΡΡΡΡ
ΡΡΠ°ΡΡΠΊΠ°Ρ
. ΠΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ ΠΏΠΎΡΠΎΠΊΠΈ Π‘Π2 Ρ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΏΠΎΡΠ²Ρ Π½Π°Π±Π»ΡΠ΄Π°ΡΡΡΡ Π² ΡΠΌΠ΅ΡΠ°Π½Π½ΠΎΠΌ Π»Π΅ΡΡ ΠΈ Π²Π°ΡΡΠΈΡΡΡΡ ΠΎΡ 2.31 Π΄ΠΎ 8.41 ΞΌΠΌΠΎΠ»Ρ CO2 ΠΌ-2 Ρ-1. ΠΠ°ΠΆΠ½ΡΠΌ ΡΡΠ»ΠΎΠ²ΠΈΠ΅ΠΌ Π΄Π»Ρ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ Π΄ΠΎΡΡΠΎΠ²Π΅ΡΠ½ΡΡ
ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ°ΡΡΠΎΡΠ° ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΠΉ. Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΏΡΠΈ ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΡΡ
Ρ ΡΠ°ΡΡΠΎΡΠΎΠΉ ΠΏΡΡΡ ΠΈ Π±ΠΎΠ»Π΅Π΅ ΡΠ°Π· Π² ΠΌΠ΅ΡΡΡ ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½Ρ Π²Π°ΡΠΈΠ°ΡΠΈΠΈ Π½Π΅ ΠΏΡΠ΅Π²ΡΡΠ°Π΅Ρ 10 %, ΡΡΠΎ ΡΠ²ΠΈΠ΄Π΅ΡΠ΅Π»ΡΡΡΠ²ΡΠ΅Ρ ΠΎ Π²ΡΡΠΎΠΊΠΎΠΉ Π΄ΠΎΡΡΠΎΠ²Π΅ΡΠ½ΠΎΡΡΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
Π·Π½Π°ΡΠ΅Π½ΠΈΠΉIn forest ecosystems, the CO2 efflux from the soil may account for 40β80 % of the total amount of released CO2. Domination carbon breath losses over productivity may change the functional role of the ecosystem and transform it from a carbon sink to source. One of the most important field of study in soil respiration research is to identify a uniform methodology for measuring CO2 fluxes from the soil surface and its standardization. In our study, we assessed the investigation of the temporal and spatial dynamics of CO2 flux from the soil surface using the method based on the dynamic closed chambers in the middle taiga forests of Central Siberia. Soil respiration measurements were carried out during the growing season from June to October 2013. The period, when the soil respiration reached to maximum development β the second half of July to the end of August 2013. The ground cover substantially affected the value of soil respiration. The smallest value observed at the site without any plant cover β pp_sand (0.11β1.24 ΞΌmol CO2 m-2 s-1), which is 8 times lower than in the forested areas. The greatest values were attended at the site with mixed forest ranged from 2.31 to 8.41 ΞΌmol CO2 m-2 s-1. An important condition to obtain reliable results is the frequency of measurements. It was found that the measurements with a frequency of 5 or more times per month does not exceed the variation coefficient of 10 %, which indicates high reliability of the obtained value