Vegetation and soil covariation, not grazing exclusion, control soil organic carbon and nitrogen in density fractions of alpine meadows in a Tibetan permafrost region

CATENA ◽  
2021 ◽  
Vol 196 ◽  
pp. 104832
Author(s):  
Zi-Qiang Yuan ◽  
Xiao-Jin Jiang
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Permafrost Region ◽  
Control Soil ◽  
Alpine Meadows ◽  
Density Fractions ◽  
Carbon And Nitrogen ◽  
Grazing Exclusion

Effects of land-use change on soil organic carbon and nitrogen in density fractions and soil δ13C and δ15N in semiarid grasslands

2015 ◽  
Vol 390 (1-2) ◽  
pp. 419-430 ◽  
Author(s):  
Liping Qiu ◽  
Xiaorong Wei ◽  
Tiane Ma ◽  
Yanchun Wei ◽  
Robert Horton ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Land Use Change ◽  
Soil Organic Carbon ◽  
Δ13c And Δ15n ◽  
Density Fractions ◽  
Carbon And Nitrogen ◽  
Effects Of Land Use

Influence of grazing exclusion on soil organic carbon and nitrogen mineralization in semiarid grasslands of the Loess Plateau

2017 ◽  
Vol 37 (2) ◽  
Author(s):  
王玉红 WANG Yuhong ◽  
马天娥 MA Tian'e ◽  
魏艳春 WEI Yanchun ◽  
魏孝荣 WEI Xiaorong ◽  
邵明安 SHAO Ming'an ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Loess Plateau ◽  
Nitrogen Mineralization ◽  
The Loess Plateau ◽  
Carbon And Nitrogen ◽  
Grazing Exclusion

Soil Organic Carbon and Nitrogen Variations with Vegetation Succession in Passively Restored Freshwater Wetlands

Wetlands ◽  
2021 ◽  
Vol 41 (1) ◽  
Author(s):  
Yu An ◽  
Yang Gao ◽  
Xiaohui Liu ◽  
Shouzheng Tong ◽  
Bo Liu ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Vegetation Succession ◽  
Freshwater Wetlands ◽  
Carbon And Nitrogen

scholarly journals Spatial heterogeneity and environmental predictors of permafrost region soil organic carbon stocks

2021 ◽  
Vol 7 (9) ◽  
pp. eaaz5236 ◽  
Author(s):  
Umakant Mishra ◽  
Gustaf Hugelius ◽  
Eitan Shelef ◽  
Yuanhe Yang ◽  
Jens Strauss ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Spatial Heterogeneity ◽  
Surface Air Temperature ◽  
Spatially Explicit ◽  
Soil Profiles ◽  
Permafrost Region ◽  
Environmental Predictors ◽  
Soil Organic Carbon Stocks ◽  
Soc Stocks

Large stocks of soil organic carbon (SOC) have accumulated in the Northern Hemisphere permafrost region, but their current amounts and future fate remain uncertain. By analyzing dataset combining >2700 soil profiles with environmental variables in a geospatial framework, we generated spatially explicit estimates of permafrost-region SOC stocks, quantified spatial heterogeneity, and identified key environmental predictors. We estimated that 1014−175+194 Pg C are stored in the top 3 m of permafrost region soils. The greatest uncertainties occurred in circumpolar toe-slope positions and in flat areas of the Tibetan region. We found that soil wetness index and elevation are the dominant topographic controllers and surface air temperature (circumpolar region) and precipitation (Tibetan region) are significant climatic controllers of SOC stocks. Our results provide first high-resolution geospatial assessment of permafrost region SOC stocks and their relationships with environmental factors, which are crucial for modeling the response of permafrost affected soils to changing climate.

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