Satellite observed cooling effects from re-vegetation on the Mongolian Plateau

Jiang, Hou; Lu, Ning; Zhang, Xingxing; Yao, Ling; Bai, Yongqing

doi:10.1016/j.scitotenv.2021.146707

Cited by 8 publications

(7 citation statements)

References 34 publications

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“…Our results showed that the two dominant land-use conversions are from sparsely vegetation to grassland and cropland, respectively, across both Mongolia and Inner Mongolia from 1992 to 2018. This conclusion was consistent with previous studies of land use changes in this area [26,39,59]. Besides the land use changes, we also observed wide vegetation cover changes across the Mongolia Plateau, but with significant spatial heterogeneity.…”

Section: Land Surface Changes In Mongolia Plateausupporting

confidence: 93%

“…The datasets used in this paper include satellite-observed land surface data, reanalysis data, and meteorological data (Table 1). In the past 30 years, negative and positive socio-economic activities jointly affected the land surface of this area, with increasing human population, livestock overgrazing, coal and mineral mining, rapid urbanization, and ecological protection behavior [39,40]. Meanwhile, the climate has become warmer and drier since the mid-1990s [40,41].…”

Section: Data and Processingmentioning

confidence: 99%

“…These results indicated that grassland degradation in arid and semi-arid areas may lead to increased temperature and reduced precipitation. To restore damaged ecosystems, large-scale ecological protection programs such as the "Grain to Green Program" were established in China, and significant landscape greening is emerging in the Chinese side of the Mongolian Plateau since 2000 [37][38][39]. Meanwhile, vegetation degradation and vegetation restoration coexist currently over the Mongolian Plateau.…”

Section: Introductionmentioning

confidence: 99%

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Modeling Potential Impacts on Regional Climate Due to Land Surface Changes across Mongolia Plateau

Liu

et al. 2022

Remote Sensing

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Although desertification has greatly increased across the Mongolian Plateau during the last decades of the 20th century, recent satellite records documented increasing vegetation growth since the 21st century in some areas of the Mongolian Plateau. Compared to the study of desertification, the opposite characteristics of land use and vegetation cover changes and their different effects on regional land–atmosphere interaction factors still lack enough attention across this vulnerable region. Using long-term time-series multi-source satellite records and regional climate model, this study investigated the climate feedback to the observed land surface changes from the 1990s to the 2010s in the Mongolia Plateau. Model simulation suggests that vegetation greening induced a local cooling effect, while the warming effect is mainly located in the vegetation degradation area. For the typical vegetation greening area in the southeast of Inner Mongolia, latent heat flux increased over 2 W/m2 along with the decrease of sensible heat flux over 2 W/m2, resulting in a total evapotranspiration increase by 0.1~0.2 mm/d and soil moisture decreased by 0.01~0.03 mm/d. For the typical vegetation degradation area in the east of Mongolia and mid-east of Inner Mongolia, the latent heat flux decreased over 2 W/m2 along with the increase of sensible heat flux over 2 W/m2 obviously, while changes in moisture cycling were spatially more associated with variations of precipitation. It means that precipitation still plays an important role in soil moisture for most areas, and some areas would be at potential risk of drought with the asynchronous increase of evapotranspiration and precipitation.

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Section: Land Surface Changes In Mongolia Plateausupporting

confidence: 93%

Section: Data and Processingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modeling Potential Impacts on Regional Climate Due to Land Surface Changes across Mongolia Plateau

Liu

et al. 2022

Remote Sensing

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“…The dominant land-cover types exhibited a decreasing trend during the study period (-0.11 class -1 , p < 0.05), indicating an overall transition from desert to grassland and from grassland to forest. As shown in Figure 4d, the most remarkable changes have occurred near the transition regions between deserts and grasslands, which corroborates the findings reported by Jiang et al [34].…”

Section: Changes In Atmospheric Co2 Concentration and Land Coversupporting

confidence: 92%

“…Affected by the Siberia-Mongolia High in winter, the East Asian Monsoon in summer, and the westerly circulation, the MP is extremely fragile and ecologically sensitive to climate variations [30,31]. Under the competing effects of climate change and human activity, the MP has experienced drastic ecosystem shifts over the past several decades including grassland degradation [32], forest decline [33], cooling effects from re-vegetation [34], and the rapid loss of lakes [35]. Nevertheless, evidence of GPP variability in this region remains limited.…”

Section: Introductionmentioning

confidence: 99%

Distribution and Attribution of Gross Primary Productivity Increase Over the Mongolian Plateau, 2001-2018

2022

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Gross primary productivity (GPP) over the Mongolian Plateau (MP) is a vital component of the global terrestrial carbon cycle. Using the latest satellite-based GPP estimates at the best achievable spatial resolution along with several ancillary datasets, we investigated GPP variations in the MP region during 2001-2018 and attributed these changes to land-surface temperature (Ts), total precipitation (Pt), land-cover change (LCC), and atmospheric carbon dioxide (CO2) concentrations. The 18-year-averaged annual cumulative GPP in the MP region was 357.02 ± 24.76 gC m -2 yr -1 during the study period, ranging from 60.51 ± 6.10 gC m -2 yr -1 in deserts to 596.41 ± 35.49 gC m -2 yr -1 in forests. A linear regression analysis indicated a significant overall increase in GPP, at a rate of 3.91 gC m -2 yr -1 (p < 0.01). In comparison, GPP increased at a rate of 0.79 gC m -2 yr -1 in deserts (p < 0.01), 4.79 gC m -2 yr -1 in forests (p < 0.01), and 5.76 gC m -2 yr -1 in grasslands (p < 0.01). Our detailed attribution analysis indicates that GPP is positively sensitive to surface air temperature (0.15 gC °C-1 ) and total precipitation (0.25 gC mm -1 ) but negatively sensitive to atmospheric CO2 concentrations (-0.20 gC mol -1 ) and LCC (-0.93 gC class -1 ). Furthermore, we reported large differences in the spatial patterns and magnitudes among individual variables in the GPP attribution analysis, with LCC proving to be the dominant factor followed by CO2 fertilization effects; climatic factors had comparatively little influence on GPP variations during the study period. Overall, the findings of this study contribute to our understanding of the responses of sensitive ecosystems to the competing effects of climate change and human disturbance at regional scales.

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Impacts of climate change and human activities on vegetation dynamics on the Mongolian Plateau, East Asia from 2000 to 2023

Yan,

Cheng,

Xin

et al. 2024

J. Arid Land

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Satellite observed cooling effects from re-vegetation on the Mongolian Plateau

Cited by 8 publications

References 34 publications

Modeling Potential Impacts on Regional Climate Due to Land Surface Changes across Mongolia Plateau

Modeling Potential Impacts on Regional Climate Due to Land Surface Changes across Mongolia Plateau

Distribution and Attribution of Gross Primary Productivity Increase Over the Mongolian Plateau, 2001-2018

Impacts of climate change and human activities on vegetation dynamics on the Mongolian Plateau, East Asia from 2000 to 2023

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