Relative availability of inorganic N-pools shifts under land use change: An unexplored variable in soil carbon dynamics

Srivastava, Pratap; Singh, Praveen Kumar; Singh, Rishi Pal; Bhadouria, Rahul; Singh, Dharmendra Kumar; Singh, Sandhya; Afreen, Talat; Tripathi, S. N.; Singh, Pardeep; Singh, H. K.; Raghubanshi, A. S.

doi:10.1016/j.ecolind.2015.12.043

Cited by 52 publications

(19 citation statements)

References 76 publications

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“…In agreement, several authors have observed higher DOC content in natural wetlands compared with farmland [38,52]. The content of DOC in the fishponds was between those two cultivation types, which might be the result of the lack of vegetation residue input [53]. In our study, DOC content was significantly negatively correlated with soil pH and bulk density (Table 2).…”

Section: Effects Of Contemporary Land-use Types On Soil Organic Carbonsupporting

confidence: 91%

Effects of Contemporary Land Use Types and Conversions from Wetland to Paddy Field or Dry Land on Soil Organic Carbon Fractions

Zhao

Dong

et al. 2020

Sustainability

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Soil organic carbon (SOC) concentration is closely related to soil quality and climate change. The objectives of this study were to estimate the effects of contemporary land use on SOC concentrations at 0-20 cm depths, and to investigate the dynamics of SOC in paddy-field soil and dry-land soil after their conversion from natural wetlands (20 and 30 years ago). We investigated the dissolved organic carbon (DOC), light fraction organic carbon (LFOC), heavy fraction organic carbon (HFOC), and other soil properties (i.e., moisture content, bulk density, pH, clay, sand, silt, available phosphorous, light fraction nitrogen, and heavy fraction nitrogen) in natural wetlands, constructed wetlands, fishponds, paddy fields, and soybean fields. The results indicated that the content of DOC increased 17% in constructed wetland and decreased 39% in fishponds, and the content of HFOC in constructed wetland and fishponds increased 50% and 8%, respectively, compared with that in natural wetlands at 0-20 cm. After the conversion of a wetland, the content of HFOC increased 72% in the paddy fields and decreased 62% in the dry land, while the content of DOC and LFOC decreased in both types. In the paddy fields, LFOC and HFOC content in the topmost 0.2 m of the soil layer was significantly higher compared to the layer below (from 0.2 to 0.6 m), and there were no significant differences observed in the dry land. The findings suggest that the paddy fields can sequester organic carbon through the accumulation of HFOC. However, the HFOC content decreased 22% after 10 years of cultivation with the decrease of clay content, indicating that paddy fields need to favor clay accumulation for the purpose of enhancing carbon sequestration in the paddy fields.

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Section: Effects Of Contemporary Land-use Types On Soil Organic Carbonsupporting

confidence: 91%

Effects of Contemporary Land Use Types and Conversions from Wetland to Paddy Field or Dry Land on Soil Organic Carbon Fractions

Zhao

Dong

et al. 2020

Sustainability

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“…The maximum mean soil CO 2 efflux of 0.58+0.1 g/m 2 /h belonged to the cropland and was significantly higher than that of the forest (p = 0.002). The significantly lower soil CO 2 efflux, and the significantly higher SC-N contents and C/N ratio found in this study for the forest than for the cropland and grassland were consistent with the findings by Srivastava et al [21].…”

Section: Multiple Comparisons Of Land Uses In Terms Of Soil C-n Contesupporting

confidence: 82%

Modeling Impacts of Land Uses on Carbon and Nitrogen Contents, Carbon Dioxide and Water Effluxes of Mediterranean Soils

Erol¹,

Eki̇nci̇²,

Akbolat³

et al. 2016

Pol. J. Environ. Stud.

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“…The concentration of atmospheric CO 2 has increased from 280.0 to 398.6 ppm between 1750 and 2014 and is increasing currently at a rate of 2.11 ppm per year (CO 2 now.org; IPCC 2014). This anthropogenic increase in atmospheric CO 2 concentration led to a change in global climate which has been identified as one of the most important scientific and political challenges of the twenty-first century in addition to the closely associated problem of sustainable food production (Abhilash et al 2016;Saraswat and Kumar 2016;Srivastava et al 2016a) (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Soil carbon dynamics and climate change: current agro-environmental perspectives and future dimensions

Srivastava

Singh

Tripathi

et al. 2016

Energ. Ecol. Environ.

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The management of soil organic carbon (SOC) has now been identified as the most imperative dimension for managing the global climate change as well as soil fertility. In this respect, various agro-ecological approaches such as organic and integrated nutrient management system have been proposed worldwide, though accepted with limited enthusiasm. The understanding of the different soil C pools and processes are of vital importance before the implementation of these agro-ecological management practices, as it determines the success of SOC management. In the present study, we tried to encompass various SOC pools and processes governing the SOC dynamics in the agro-ecosystems. In this paper, dry tropical ecosystems having a unique ecological behaviour (such as strong nutrient conservation mechanisms and potential C sink nature) have been discussed especially due to its potential role in global climate change and mitigation, and linked soil fertility. It is proposed that a multi-factorial experimentation involving quantitative and qualitative change in soil available N, microbial and aggregate attributes, which has been recently found to be of crucial significance, is required for the proper mechanistic understanding of SOC dynamics. It may also help in the identification of some integrative functional indicators, which can be used to achieve a balanced SOC dynamics via suitable agromanagement.

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Relative availability of inorganic N-pools shifts under land use change: An unexplored variable in soil carbon dynamics

Cited by 52 publications

References 76 publications

Effects of Contemporary Land Use Types and Conversions from Wetland to Paddy Field or Dry Land on Soil Organic Carbon Fractions

Effects of Contemporary Land Use Types and Conversions from Wetland to Paddy Field or Dry Land on Soil Organic Carbon Fractions

Modeling Impacts of Land Uses on Carbon and Nitrogen Contents, Carbon Dioxide and Water Effluxes of Mediterranean Soils

Soil carbon dynamics and climate change: current agro-environmental perspectives and future dimensions

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