| Title |
Enhanced rice production but greatly reduced carbon emission following biochar amendment in a metal-polluted rice paddy
|
|---|---|
| Published in |
Environmental Science and Pollution Research, July 2015
|
| DOI | 10.1007/s11356-015-4967-8 |
| Pubmed ID | |
| Authors |
Afeng Zhang, Rongjun Bian, Lianqing Li, Xudong Wang, Ying Zhao, Qaiser Hussain, Genxing Pan |
| Abstract |
Soil amendment of biochar (BSA) had been shown effective for mitigating greenhouse gas (GHG) emission and alleviating metal stress to plants and microbes in soil. It has not yet been addressed if biochar exerts synergy effects on crop production, GHG emission, and microbial activity in metal-polluted soils. In a field experiment, biochar was amended at sequential rates at 0, 10, 20, and 40 t ha(-1), respectively, in a cadmium- and lead-contaminated rice paddy from the Tai lake Plain, China, before rice cropping in 2010. Fluxes of soil carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) were monitored using a static chamber method during the whole rice growing season (WRGS) of 2011. BSA significantly reduced soil CaCl2 extractable pool of Cd, and DTPA extractable pool of Cd and Pb. As compared to control, soil CO2 emission under BSA was observed to have no change at 10 t ha(-1) but decreased by 16-24 % at 20 and 40 t ha(-1). In a similar trend, BSA at 20 and 40 t ha(-1) increased rice yield by 25-26 % and thus enhanced ecosystem CO2 sequestration by 47-55 % over the control. Seasonal total N2O emission was reduced by 7.1, 30.7, and 48.6 % under BSA at 10, 20, and 40 t ha(-1), respectively. Overall, a net reduction in greenhouse gas balance (NGHGB) by 53.9-62.8 % and in greenhouse gas intensity (GHGI) by 14.3-28.6 % was observed following BSA at 20 and 40 t ha(-1). The present study suggested a great potential of biochar to enhancing grain yield while reducing carbon emission in metal-polluted rice paddies. |
X Demographics
The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 93 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Italy | 1 | 1% |
| Unknown | 92 | 99% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 21 | 23% |
| Student > Master | 11 | 12% |
| Researcher | 9 | 10% |
| Student > Doctoral Student | 5 | 5% |
| Student > Bachelor | 4 | 4% |
| Other | 10 | 11% |
| Unknown | 33 | 35% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 26 | 28% |
| Environmental Science | 15 | 16% |
| Engineering | 4 | 4% |
| Medicine and Dentistry | 3 | 3% |
| Social Sciences | 3 | 3% |
| Other | 8 | 9% |
| Unknown | 34 | 37% |
Attention Score in Context
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#21,420,714
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#7,000
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Outputs of similar age from Environmental Science and Pollution Research
#97
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