scholarly journals The Potential Benefits and Trade-Offs of Using Sub-surface Water Retention Technology on Coarse-Textured Soils: Impacts of Water and Nutrient Saving on Maize Production and Soil Carbon Sequestration

2019 ◽  
Vol 3 ◽  
Author(s):  
Libère Nkurunziza ◽  
Ngonidzashe Chirinda ◽  
Marcos Lana ◽  
Rolf Sommer ◽  
Stanley Karanja ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Surface Water ◽  
Soil Carbon ◽  
Water Retention ◽  
Soil Carbon Sequestration ◽  
Maize Production ◽  
Trade Offs ◽  
Potential Benefits

scholarly journals Towards a global-scale soil climate mitigation strategy

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
W. Amelung ◽  
D. Bossio ◽  
W. de Vries ◽  
I. Kögel-Knabner ◽  
J. Lehmann ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Global Scale ◽  
Soil Carbon Sequestration ◽  
Soil Conditions ◽  
Climate Mitigation ◽  
Management Options ◽  
Trade Offs ◽  
Local Soil ◽  
Carbon Losses

Abstract Sustainable soil carbon sequestration practices need to be rapidly scaled up and implemented to contribute to climate change mitigation. We highlight that the major potential for carbon sequestration is in cropland soils, especially those with large yield gaps and/or large historic soil organic carbon losses. The implementation of soil carbon sequestration measures requires a diverse set of options, each adapted to local soil conditions and management opportunities, and accounting for site-specific trade-offs. We propose the establishment of a soil information system containing localised information on soil group, degradation status, crop yield gap, and the associated carbon-sequestration potentials, as well as the provision of incentives and policies to translate management options into region- and soil-specific practices.

scholarly journals Trade-offs between soil carbon sequestration and reactive nitrogen losses under straw return in global agroecosystems

2018 ◽  
Vol 24 (12) ◽  
pp. 5919-5932 ◽  
Author(s):  
Longlong Xia ◽  
Shu Kee Lam ◽  
Benjamin Wolf ◽  
Ralf Kiese ◽  
Deli Chen ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Soil Carbon Sequestration ◽  
Nitrogen Losses ◽  
Reactive Nitrogen ◽  
Trade Offs ◽  
Straw Return

Vegetation restoration stimulates soil carbon sequestration and stabilization in a subtropical area of southern China

CATENA ◽  
2019 ◽  
Vol 181 ◽  
pp. 104098 ◽  
Author(s):  
Xiang Gu ◽  
Xi Fang ◽  
Wenhua Xiang ◽  
Yelin Zeng ◽  
Shiji Zhang ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Southern China ◽  
Vegetation Restoration ◽  
Soil Carbon Sequestration ◽  
Subtropical Area

Eucalyptus and Pinus stand density effects on soil carbon sequestration

2016 ◽  
Vol 368 ◽  
pp. 28-38 ◽  
Author(s):  
Jorge Hernández ◽  
Amabelia del Pino ◽  
Eric D. Vance ◽  
Álvaro Califra ◽  
Fabián Del Giorgio ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Stand Density ◽  
Soil Carbon Sequestration ◽  
Density Effects

scholarly journals Challenges of soil carbon sequestration in NENA Region

2018 ◽  
Author(s):  
Talal Darwish ◽  
Therese Atallah ◽  
Ali Fadel
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Agricultural Practices ◽  
Conservation Agriculture ◽  
Belowground Biomass ◽  
Soil Carbon Sequestration ◽  
Nitrogen Fertilizers ◽  
Land Capability ◽  
North East ◽  
Modest Contribution

Abstract. North East North Africa (NENA) region spans over 14 % of the total surface of the Earth and hosts 10 % of its population. Soils of the NENA region are mostly highly vulnerable to degradation, and food security will depend much on sustainable agricultural measures. Weather variability, drought and depleting vegetation are dominant causes of the decline in soil organic carbon (SOC). In this work the situation of SOC was studied, using a land capability model and soil mapping. The land capability model showed that most NENA countries (17 out of 20), suffer from low productive lands (> 80 %). Stocks of SOC were mapped (1 : 5 Million) in topsoils (0–30 cm) and subsoils (30–100 cm). The maps showed that 69 % of soil resources present a stock of SOC below the threshold of 30 t ha−1. The stocks varied between ≈ 10 t ha−1 in shrublands and 60 t ha−1 for evergreen forests. Highest stocks were found in forests, irrigated crops, mixed orchards and saline flooded vegetation. The stocks of SIC were higher than those of SOC. In subsoils, the SIC ranged between 25 and 450 t ha−1, against 20 to 45 t ha−1 for SOC. This paper also highlights the modest contribution of NENA region to global SOC stock in the topsoil not exceeding 4.1 %. The paper also discusses agricultural practices that are favorable to carbon sequestration. Practices of conservation agriculture could be effective, as the presence of soil cover reduces the evaporation, water and wind erosions. Further, the introduction of legumes, as part of a cereal-legume rotation, and the application of nitrogen fertilizers to the cereal, caused a notable increase of SOC after 10 years. The effects of crop rotations on SOC are related to the amounts of above and belowground biomass produced and retained in the system. Some knowledge gaps exist especially in aspects related to the effect of irrigation on SOC, and on SIC at the level of soil profile and soil landscape. Still, major constraints facing soil carbon sequestration are policy relevant and socio-economic in nature, rather than scientific.

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