Driving factors of soil carbon accumulation in Oxisols in long-term no-till systems of South Brazil

2018 ◽  
Vol 622-623 ◽  
pp. 735-742 ◽  
Author(s):  
Ademir de Oliveira Ferreira ◽  
Telmo Jorge Carneiro Amado ◽  
Charles W. Rice ◽  
Dorivar A. Ruiz Diaz ◽  
Clever Briedis ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Driving Factors ◽  
Carbon Accumulation ◽  
No Till ◽  
Soil Carbon Accumulation ◽  
South Brazil

Microbial community variation and its relationship with soil carbon accumulation during long-term oasis formation

2021 ◽  
Vol 168 ◽  
pp. 104126
Author(s):  
Chenhua Li ◽  
Yan Li ◽  
Jie Ma ◽  
Yugang Wang ◽  
Zhifang Wang ◽  
...  
Keyword(s):  
Microbial Community ◽  
Soil Carbon ◽  
Carbon Accumulation ◽  
Soil Carbon Accumulation ◽  
Community Variation

scholarly journals Long-term Fertilization Enhances Soil Carbon Stability by Increase the Ratio of Passive Carbon: Evidence From Four Typical Croplands

2021 ◽  
Author(s):  
Wei Zhou ◽  
Shilin Wen ◽  
Yunlong Zhang ◽  
Andrew S. Gregory ◽  
Minggang Xu ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Carbon ◽  
Active Carbon ◽  
Large Scale ◽  
Carbon Accumulation ◽  
Response Ratio ◽  
Soil Carbon Accumulation ◽  
The Stability

Abstract Aims Soil organic carbon (SOC) plays an important role in improving soil quality, however how long-term fertilization influences SOC and contrasting active carbon (AC) and passive C (PC) pools at large scale remains unclear. The aim of this study was to examine the effect of long-term fertilization on SOC, including AC and PC, across four typical croplands in China and to explore the potential relationships and mechanism. Methods We assessed the effect of different fertilization (standard and 1.5 × standard of inorganic fertilizer (NPK) with or without manure (M), with a control for comparison) at soil depths (0-20 cm, 20-40 cm, 40-60 cm) on SOC, AC and PC. Results We found that SOC, AC and PC increased in the order Control < NPK < NPKM < 1.5NPKM. 1.5NPKM resulted in a significant increase in SOC, AC and PC, of 76.3%, 53.0% and 108.5% respectively across the soil profile (0-60 cm) compared with Control. The response ratio of PC to long-term fertilization was 2.1 times greater than that of AC across four sites on average. In addition, Clay was identified as the most important factor in explaining the response of AC and PC to different fertilization application, respectively. Conclusions Long-term fertilization enhanced both AC and PC, but the greater response of PC suggests that fertilization application could enhance the stability of carbon and thus the potential of cropland for soil carbon accumulation.

scholarly journals Soil Carbon Accumulation and CO2Flux in Experimental Restoration Plots, Southern Iceland: Comparing Soil Treatment Strategies

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Lawrence H. Tanner ◽  
Morgan Nivison ◽  
Olafur Arnalds ◽  
Kristin Svavarsdóttir
Keyword(s):  
Carbon Sequestration ◽  
Carbon Content ◽  
Soil Carbon ◽  
Treatment Strategies ◽  
Carbon Accumulation ◽  
Vegetative Cover ◽  
Soil Carbon Accumulation ◽  
Land Surfaces ◽  
Carbon Accumulation Rates

Experimental plots were established on severely eroded land surfaces in Iceland in 1999 to study the rates and limits of soil carbon sequestration during restoration and succession. The carbon content in the upper 10 cm of soils increased substantially during the initial eight years in all plots for which the treatments included both fertilizer and seeding with grasses, concomitant with the increase in vegetative cover. In the following five years, however, the soil carbon accumulation rates declined to negligible for most treatments and the carbon content in soils mainly remained relatively constant. We suggest that burial of vegetated surfaces by aeolian drift and nutrient limitation inhibited productivity and carbon sequestration in most plots. Only plots seeded with lupine demonstrated continued long-term soil carbon accumulation and soil CO2flux rates significantly higher than background levels. This demonstrates that lupine was the sole treatment that resulted in vegetation capable of sustained growth independent of nutrient availability and resistant to disruption by aeolian processes.

scholarly journals The dominant microorganisms vary with aggregates sizes in promoting soil carbon accumulation under straw application

2021 ◽  
pp. 1-17
Author(s):  
Jinjing Lu ◽  
Shengping Li ◽  
Xueping Wu ◽  
Guopeng Liang ◽  
Chunhua Gao ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Carbon Accumulation ◽  
Soil Carbon Accumulation ◽  
Straw Application

Climatic controls on soil carbon accumulation and loss in a dryland ecosystem

2021 ◽  
Author(s):  
Bonnie G. Waring ◽  
Kenneth R. Smith ◽  
Edmund E. Grote ◽  
Armin Howell ◽  
Robin Reibold ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Carbon Accumulation ◽  
Soil Carbon Accumulation
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