scholarly journals Tillage, Nitrogen, and Cropping System Effects on Soil Carbon Sequestration

2002 ◽  
Vol 66 (3) ◽  
pp. 906-912 ◽  
Author(s):  
Ardell D. Halvorson ◽  
Brian J. Wienhold ◽  
Alfred L. Black
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Cropping System ◽  
Soil Carbon Sequestration

Rice–wheat cropping system: tillage, mulch, and nitrogen effects on soil carbon sequestration and crop productivity

2015 ◽  
Vol 15 (4) ◽  
pp. 699-710 ◽  
Author(s):  
Keshav R. Adhikari ◽  
Khem R. Dahal ◽  
Zueng-Sang Chen ◽  
Yih-Chi Tan ◽  
Jihn-Sung Lai
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Cropping System ◽  
Crop Productivity ◽  
Soil Carbon Sequestration

scholarly journals Tillage, Nitrogen, and Cropping System Effects on Soil Carbon Sequestration

2002 ◽  
Vol 66 (3) ◽  
pp. 906 ◽  
Author(s):  
Ardell D. Halvorson ◽  
Brian J. Wienhold ◽  
Alfred L. Black
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Cropping System ◽  
Soil Carbon Sequestration

scholarly journals Water-saving ground cover rice production system reduces net greenhouse gas fluxes in an annual rice-based cropping system

2014 ◽  
Vol 11 (6) ◽  
pp. 8925-8967 ◽  
Author(s):  
Z. Yao ◽  
Y. Du ◽  
Y. Tao ◽  
X. Zheng ◽  
C. Liu ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Greenhouse Gas ◽  
Production System ◽  
Cropping System ◽  
Ground Cover ◽  
Water Saving ◽  
Soil Carbon Sequestration ◽  
Chicken Manure ◽  
Ch4 And N2o

Abstract. To safeguard food security and preserve precious water resources, the technology of water-saving ground cover rice production system (GCRPS) is being increasingly adopted for the rice cultivation. However, changes in soil water status and temperature under GCRPS may affect soil biogeochemical processes that control the biosphere–atmosphere exchanges of methane (CH4), nitrous oxide (N2O) and carbon dioxide (CO2). The overall goal of this study is to better understand how net ecosystem greenhouse gas exchanges (NEGE) and grain yields are affected by GCRPS in an annual rice-based cropping system. Our evaluation was based on measurements of the CH4 and N2O fluxes and soil heterotrophic respiration (CO2 emission) over a complete year, as well as the estimated soil carbon sequestration intensity for six different fertilizer treatments for conventional paddy and GCRPS. The fertilizer treatments included urea application and no N fertilization for both conventional paddy (CUN and CNN) and GCRPS (GUN and GNN), solely chicken manure (GCM) and combined urea and chicken manure applications (GUM) for GCRPS. Averaging across all the fertilizer treatments, GCRPS increased annual N2O emission and grain yield by 40% and 9%, respectively, and decreased annual CH4 emission by 69%, while GCRPS did not affect soil CO2 emissions relative to the conventional paddy. The annual direct emission factors of N2O were 4.01, 0.087 and 0.50% for GUN, GCM and GUM, respectively, and 1.52% for the conventional paddy (CUN). The annual soil carbon sequestration intensity under GCRPS was estimated to be an average of −1.33 Mg C ha−1 yr−1, which is approximately 44% higher than the conventional paddy. The annual NEGE were 10.80–11.02 Mg CO2-eq ha−1 yr−1 for the conventional paddy and 3.05–9.37 Mg CO2-eq ha−1 yr−1 for the GCRPS, suggesting the potential feasibility of GCRPS in reducing net greenhouse effect from rice cultivation. Using organic fertilizers for GCRPS considerably reduced annual emissions of CH4 and N2O and increased soil carbon sequestration, resulting in the lowest NEGE (3.05–5.00 Mg CO2-eq ha−1 yr−1). Accordingly, water-saving GCRPS with organic fertilizer amendments was considered the most promising management regime for simultaneously achieving relatively high grain yield and reduced net greenhouse gas emission.

scholarly journals Soil organic carbon dynamics under long-term fertilizations in arable land of northern China

2010 ◽  
Vol 7 (2) ◽  
pp. 409-425 ◽  
Author(s):  
W. J. Zhang ◽  
X. J. Wang ◽  
M. G. Xu ◽  
S. M. Huang ◽  
H. Liu ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Conversion Rate ◽  
Cropping Systems ◽  
Cropping System ◽  
Clay Content ◽  
Northern China ◽  
Soil Carbon Sequestration ◽  
Warm Temperate Zone

Abstract. Soil carbon sequestration is a complex process influenced by agricultural practices, climate and soil conditions. This paper reports a study of long-term fertilization impacts on soil organic carbon (SOC) dynamic from six long-term experiments. The experiment sites are located from warm-temperate zone with a double-cropping system of corn (Zea mays L.) – wheat (Triticum Aestivium L.) rotation, to mild-temperate zones with mono-cropping systems of continuous corn, or a three-year rotation of corn-wheat-wheat. Mineral fertilizer applications result in an increasing trend in SOC except in the arid and semi-arid areas with the mono-cropping systems. Additional manure application is important to maintain SOC level in the arid and semi-arid areas. Carbon conversion rate is significant lower in the warm-temperate zone with double cropping system (6.8%–7.7%) than that in the mild-temperate areas with mono-cropping systems (15.8%–31.0%). The conversion rate is significantly correlated with annual precipitation and active accumulative temperature, i.e., higher conversion rate under lower precipitation and/or temperature conditions. Moreover, soil high in clay content has higher conversion rate than soils low in clay content. Soil carbon sequestration rate ranges from 0.07 to 1.461 t ha−1 year−1 in the upland of northern China. There is significantly linear correlation between soil carbon sequestration and carbon input at most sites, indicating that these soils are not carbon-saturated thus have potential to migrate more CO2 from atmosphere.

scholarly journals Combined Fertilization Could Increase Crop Productivity and Reduce Greenhouse Gas Intensity through Carbon Sequestration under Rice-Wheat Rotation

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2540
Author(s):  
Tengfei Guo ◽  
Haoan Luan ◽  
Dali Song ◽  
Shuiqing Zhang ◽  
Wei Zhou ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Greenhouse Gas ◽  
Wheat Yield ◽  
Cropping System ◽  
C Sequestration ◽  
Crop Productivity ◽  
Soil Carbon Sequestration ◽  
Rotation System ◽  
Greenhouse Gas Intensity

Quantifying greenhouse gas intensity (GHGI) and soil carbon sequestration is a method to assess the mitigation potential of agricultural activities. However, the effects of different fertilizer amendments on soil carbon sequestration and net GHGI in a rice-wheat cropping system are poorly understood. Here, fertilizer treatments including PK (P and K fertilizers); NPK (N, P and K fertilizers), NPK + OM (NPK plus manure), NPK + SR (NPK plus straw returning), and NPK + CR (NPK plus controlled-release fertilizer) with equal N input were conducted to gain insight into the change of soil organic carbon (SOC) derived from the net ecosystem carbon budget (NECB), net global warming potential (GWP), and GHGI under rice-wheat rotation. Results showed that compared with NPK treatment, NPK + OM significantly increased wheat yield and NPK + SR caused significant increase in rice yield. Meanwhile, NPK + SR and NPK + CR treatments reduced net GWP by 30.80% and 21.83%, GHGI by 36.84% and 28.07%, respectively, which suggested that improved grain production could be achieved without sacrificing the environment. With the greatest C sequestration, lowest GHGI, the NPK plus straw returning practices (NPK + SR) might be the best strategy to mitigate net GWP and improve grain yield and NUE in the current rice-wheat rotation system.

scholarly journals Water-saving ground cover rice production system reduces net greenhouse gas fluxes in an annual rice-based cropping system

2014 ◽  
Vol 11 (22) ◽  
pp. 6221-6236 ◽  
Author(s):  
Z. Yao ◽  
Y. Du ◽  
Y. Tao ◽  
X. Zheng ◽  
C. Liu ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Greenhouse Gas ◽  
Production System ◽  
Cropping System ◽  
Ground Cover ◽  
Water Saving ◽  
Soil Carbon Sequestration ◽  
Chicken Manure ◽  
Ch4 And N2o

Abstract. To safeguard food security and preserve precious water resources, the technology of water-saving ground cover rice production system (GCRPS) is being increasingly adopted for rice cultivation. However, changes in soil water status and temperature under GCRPS may affect soil biogeochemical processes that control the biosphere–atmosphere exchanges of methane (CH4), nitrous oxide (N2O) and carbon dioxide (CO2). The overall goal of this study is to better understand how net ecosystem greenhouse gas exchanges (NEGE) and grain yields are affected by GCRPS in an annual rice-based cropping system. Our evaluation was based on measurements of the CH4 and N2O fluxes and soil heterotrophic respiration (CO2 emissions) over a complete year, and the estimated soil carbon sequestration intensity for six different fertilizer treatments for conventional paddy and GCRPS. The fertilizer treatments included urea application and no N fertilization for both conventional paddy (CUN and CNN) and GCRPS (GUN and GNN), and solely chicken manure (GCM) and combined urea and chicken manure applications (GUM) for GCRPS. Averaging across all the fertilizer treatments, GCRPS increased annual N2O emission and grain yield by 40 and 9%, respectively, and decreased annual CH4 emission by 69%, while GCRPS did not affect soil CO2 emissions relative to the conventional paddy. The annual direct emission factors of N2O were 4.01, 0.09 and 0.50% for GUN, GCM and GUM, respectively, and 1.52% for the conventional paddy (CUN). The annual soil carbon sequestration intensity under GCRPS was estimated to be an average of −1.33 Mg C ha−1 yr−1, which is approximately 44% higher than the conventional paddy. The annual NEGE were 10.80–11.02 Mg CO2-eq ha−1 yr−1 for the conventional paddy and 3.05–9.37 Mg CO2-eq ha−1 yr−1 for the GCRPS, suggesting the potential feasibility of GCRPS in reducing net greenhouse effects from rice cultivation. Using organic fertilizers for GCRPS considerably reduced annual emissions of CH4 and N2O and increased soil carbon sequestration, resulting in the lowest NEGE (3.05–5.00 Mg CO2-eq ha−1 yr−1). Accordingly, water-saving GCRPS with organic fertilizer amendments was considered the most promising management regime for simultaneously achieving relatively high grain yield and reduced net greenhouse gas emission.

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