scholarly journals Soil properties and carbon sequestration in Persian oak (Quercus brantii var. persica) forests, Iran

2019 ◽  
Vol 65 (No. 7) ◽  
pp. 247-255
Author(s):  
Ali Mahdavi ◽  
Azadeh Maleki ◽  
Masoud Bazgir
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Forest Degradation ◽  
Soil Carbon Sequestration ◽  
Forest Stands ◽  
Surface Layers ◽  
Ecosystem Research ◽  
Oak Trees ◽  
Quercus Brantii ◽  
Coppice Forest

One of the important issues both in the political discussion about climate change and in forest ecosystem research is carbon sequestration. In this paper, we estimated soil carbon sequestration (SCS) in two Persian oak forest stands of different origin (seed and coppice). Soil samples were taken at two soil depths (0–15 and 15–30 cm) and locations (under the tree crown and open area) in each oak stand. Results showed that surface layers (0–15 cm) had the highest soil carbon sequestration ranging from 41.2 t·ha–1 to 47.9 t·ha–1 for both oak forests. The total SCS was higher (between 79.5 and 89.07 t·ha–1) in open areas of the two forest stands than under the crowns of oak trees. Finally, the amount of total SCS in seed originated forest (SOF) (86.52 t·ha–1) was significantly greater (P < 0.05) than in coppice forest (CF) (77.70 t·ha–1). The results indicate that a relatively large proportion of C loss in CF is due to overgrazing, forest degradation and conversion to coppice forests in the study area.

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.

What can we learn from ancient fertile anthropic soil (Amazonian Dark Earths, shell mounds, Plaggen soil) for soil carbon sequestration?

CATENA ◽  
2019 ◽  
Vol 172 ◽  
pp. 104-112 ◽  
Author(s):  
Jürgen Kern ◽  
Luise Giani ◽  
Wenceslau Teixeira ◽  
Giacomo Lanza ◽  
Bruno Glaser
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Soil Carbon Sequestration ◽  
Amazonian Dark Earths ◽  
Shell Mounds

Bad News for Soil Carbon Sequestration?

Science ◽  
2012 ◽  
Vol 337 (6098) ◽  
pp. 1049-1050 ◽  
Author(s):  
G. A. Kowalchuk
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Soil Carbon Sequestration ◽  
Bad News
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