Protocols for Determination and Evaluation of Organic Carbon Pools in Soils Developed Under Contrasting Pedogenic Processes and Subjected to Varying Management Situations

2020 ◽  
pp. 87-105 ◽  
Author(s):  
Rakesh S ◽  
Deepranjan Sarkar ◽  
Shikha ◽  
Ardith Sankar ◽  
Abhas Kumar Sinha ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Pools ◽  
Pedogenic Processes

Maize root-induced change in soil organic carbon pools

2002 ◽  
Vol 66 (3) ◽  
pp. 845 ◽  
Author(s):  
B. C. Liang ◽  
X. L. Wang ◽  
B. L. Ma
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Maize Root ◽  
Carbon Pools ◽  
Soil Organic Carbon Pools

scholarly journals Effect of Long-Term Soil Management Practices on Tree Growth, Yield and Soil Biodiversity in a High-Density Olive Agro-Ecosystem

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1036
Author(s):  
Sauro Simoni ◽  
Giovanni Caruso ◽  
Nadia Vignozzi ◽  
Riccardo Gucci ◽  
Giuseppe Valboa ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Structure ◽  
Soil Management ◽  
Carbon Pools ◽  
Grass Cover ◽  
Soil Biodiversity ◽  
Canopy Effect ◽  
Soil Organic Carbon Pools

Edaphic arthropod communities provide valuable information about the prevailing status of soil quality to improve the functionality and long-term sustainability of soil management. The study aimed at evaluating the effect of plant and grass cover on the functional biodiversity and soil characteristics in a mature olive orchard (Olea europaea L.) managed for ten years by two conservation soil managements: natural grass cover (NC) and conservation tillage (CT). The trees under CT grew and yielded more than those under NC during the period of increasing yields (years 4–7) but not when they reached full production. Soil management did not affect the tree root density. Collecting samples underneath the canopy (UC) and in the inter-row space (IR), the edaphic environment was characterized by soil structure, hydrological properties, the concentration and storage of soil organic carbon pools and the distribution of microarthropod communities. The soil organic carbon pools (total and humified) were negatively affected by minimum tillage in IR, but not UC, without a loss in fruit and oil yield. The assemblages of microarthropods benefited, firstly, from the grass cover, secondly, from the canopy effect, and thirdly, from a soil structure ensuring a high air capacity and water storage. Feeding functional groups—hemiedaphic macrosaprophages, polyphages and predators—resulted in selecting the ecotonal microenvironment between the surface and edaphic habitat.

scholarly journals Uncertainties in dissolved organic carbon load estimation in a small stream

2013 ◽  
Vol 61 (1) ◽  
pp. 81-83 ◽  
Author(s):  
Olaf Büttner ◽  
Jörg Tittel
Keyword(s):  
Organic Carbon ◽  
Absorption Coefficient ◽  
Dissolved Organic Carbon ◽  
Additional Data ◽  
Sampling Frequency ◽  
Carbon Pools ◽  
Load Estimation ◽  
Small Stream ◽  
High Discharge ◽  
Carbon Load

Abstract Dissolved organic carbon (DOC) transported by rivers represents an important link between carbon pools of terrestrial and oceanic ecosystems. However, it is unclear how frequent DOC must be sampled to obtain reasonable load estimates. Here, we used continuous records of the specific UV absorption coefficient (SAC) and discharge from a headwater stream at the Ore Mountains (Germany) to calculate load errors depending on DOC sampling frequency. SAC was used as a proxy for DOC. The results show that the load was underestimated by 13-19% with monthly, 10-13% with bi-weekly and 7-9% with weekly DOC samplings, respectively. We conclude that collecting additional data from high discharge events decrease the error significantly.

Impact of Long-Term Organic Fertilizer Application on Lignin in Mollisol

2010 ◽  
Vol 113-116 ◽  
pp. 1332-1335 ◽  
Author(s):  
Ning Liu ◽  
Hong Bo He ◽  
Hong Tu Xie ◽  
Zhen Bai ◽  
Xu Dong Zhang
Keyword(s):  
Organic Carbon ◽  
Organic Fertilizer ◽  
Fertilizer Application ◽  
Carbon Pools ◽  
Organic Fertilization ◽  
Degradation Degree ◽  
Northeast Of China ◽  
The Impact ◽  
Cuo Oxidation

Fertilization is one of the essential managements to maintain and increase soil organic carbon (SOC) level in agroecosystems. It has been realized that fertilizer applications influenced the turnover of labile and refractory organic carbon pools in arable soil markedly. However, the dynamic of relatively refractory lignin in response to fertilization is still kept unclear. Therefore, the impact of long-term organic fertilization on the content and degradation degree of lignin in Mollisol was investigated. Lignin monomers were released by alkaline CuO oxidation method and quantified by gas chromatography (GC). At the time scale of decades, lignin was clearly accumulated in soil and the relative accumulation of lignin in SOC was evident after long-term organic fertilizer application. Compared with the unfertilized soil, lower acid to aldehyde ratios of vanillyl and syringyl units induced by organic fertilization suggested a lower degradation degree of lignin incorporated into soil to some extent. It could be concluded that long-term organic fertilization was an effective fertilizer practice for lignin accumulation in soil and SOC sequestration in Mollisol in northeast of China.

Changes in soil organic carbon pools in a long-term trial with perennial fodder crops in acid soils of north-east India

2017 ◽  
Vol 73 (2) ◽  
pp. 473-481 ◽  
Author(s):  
D. Sarkar ◽  
Ch. B. Meitei ◽  
A. Das ◽  
P. K. Ghosh ◽  
B. Mandal
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Acid Soils ◽  
Carbon Pools ◽  
North East India ◽  
North East ◽  
Fodder Crops ◽  
Term Trial ◽  
Soil Organic Carbon Pools
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