Evaluation of organic carbon stocks and СО2 fluxes in grasslands of Western Transbaikalia

Lavrentyeva, I. N.; Merkusheva, M. G.; Убугунов, Л. Л.

doi:10.1134/s1064229317040056

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…As noted by Beck, et al [51], estimating the NDVI of high-latitude vegetation is problematic during winter due to the effects of snow. In this study, the NDVI was analyzed during the growing seasons from May to September according to Lavrentyeva, et al [52]; therefore, the influence of snow was negligible.…”

Section: Ndvi Datamentioning

confidence: 99%

“…As shown in Figure 6b, this basin showed various trends in NDVI from 1982 to 2015. A total of 21.74% of the region showed a significant increasing trend, while 14.35% of the area exhibited a The mean NDVI in the growing season (from May to September according to Lavrentyeva, Merkusheva and Ubugunov [52]) exhibited a spatially heterogeneous pattern from 1982 to 2015 (Figure 6a). As expected, the NDVI generally followed the spatial pattern of the vegetation types identified in this area with higher values in forested areas to the north and lower values in the grassland.…”

Section: Vegetation Changementioning

confidence: 99%

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Contrasting Changes in Vegetation Growth due to Different Climate Forcings over the Last Three Decades in the Selenga-Baikal Basin

Wang

et al. 2019

Remote Sensing

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The Selenga-Baikal Basin, a transboundary river basin between Mongolia and Russia, warmed at nearly twice the global rate and experienced enhanced human activities in recent decades. To understand the vegetation response to climate change, the dynamic spatial-temporal characteristics of the vegetation and the relationships between the vegetation dynamics and climate variability in the Selenga-Baikal Basin were investigated using the Normalized Difference Vegetation Index (NDVI) and gridded temperature and precipitation data for the period of 1982 to 2015. Our results indicated that precipitation played a key role in vegetation growth across regions that presented multiyear mean annual precipitation lower than 350 mm, although its importance became less apparent over regions with precipitation exceeding 350 mm. Because of the overall temperature-limited conditions, temperature had a more substantial impact on vegetation growth than precipitation. Generally, an increasing trend was observed in the growth of forest vegetation, which is heavily dependent on temperature, whereas a decreasing trend was detected for grassland, for which the predominant growth-limiting factor is precipitation. Additionally, human activities, such as urbanization, mining, increased wildfires, illegal logging, and livestock overgrazing are important factors driving vegetation change.

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Section: Ndvi Datamentioning

confidence: 99%

Section: Vegetation Changementioning

confidence: 99%

Contrasting Changes in Vegetation Growth due to Different Climate Forcings over the Last Three Decades in the Selenga-Baikal Basin

Wang

et al. 2019

Remote Sensing

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Dynamics of soil organic carbon in the steppes of Russia and Kazakhstan under past and future climate and land use

et al. 2021

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Changes in land use and climate are the main drivers of change in soil organic matter contents. We investigated the impact of the largest policy-induced land conversion to arable land, the Virgin Lands Campaign (VLC), from 1954 to 1963, of the massive cropland abandonment after 1990 and of climate change on soil organic carbon (SOC) stocks in steppes of Russia and Kazakhstan. We simulated carbon budgets from the pre-VLC period (1900) until 2100 using a dynamic vegetation model to assess the impacts of observed land-use change as well as future climate and land-use change scenarios. The simulations suggest for the entire VLC region (266 million hectares) that the historic cropland expansion resulted in emissions of 1.6⋅ 1015 g (= 1.6 Pg) carbon between 1950 and 1965 compared to 0.6 Pg in a scenario without the expansion. From 1990 to 2100, climate change alone is projected to cause emissions of about 1.8 (± 1.1) Pg carbon. Hypothetical recultivation of the cropland that has been abandoned after the fall of the Soviet Union until 2050 may cause emissions of 3.5 (± 0.9) Pg carbon until 2100, whereas the abandonment of all cropland until 2050 would lead to sequestration of 1.8 (± 1.2) Pg carbon. For the climate scenarios based on SRES (Special Report on Emission Scenarios) emission pathways, SOC declined only moderately for constant land use but substantially with further cropland expansion. The variation of SOC in response to the climate scenarios was smaller than that in response to the land-use scenarios. This suggests that the effects of land-use change on SOC dynamics may become as relevant as those of future climate change in the Eurasian steppes.

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Lipid Components of Soils in Dry-Steppe Landscapes of the Selenga Mountains

et al. 2022

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Evaluation of organic carbon stocks and СО2 fluxes in grasslands of Western Transbaikalia

Cited by 4 publications

References 26 publications

Contrasting Changes in Vegetation Growth due to Different Climate Forcings over the Last Three Decades in the Selenga-Baikal Basin

Contrasting Changes in Vegetation Growth due to Different Climate Forcings over the Last Three Decades in the Selenga-Baikal Basin

Dynamics of soil organic carbon in the steppes of Russia and Kazakhstan under past and future climate and land use

Lipid Components of Soils in Dry-Steppe Landscapes of the Selenga Mountains

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