Effects of Biochar Application on Soil Organic Carbon Composition and Enzyme Activity in Paddy Soil under Water-Saving Irrigation
Bibliographic Data
| ID | 15510092 |
|---|---|
| Authors | Shihong Yang (0000-0001-7176-8648, Hohai University, corresponding author), Xi Chen (0000-0002-2058-0351, Hohai University), Zewei Jiang (0000-0001-6077-5244, Hohai University), Jie Ding (0000-0002-5637-228X, Hohai University), Xiao Sun (0000-0002-9606-9170, Hohai University), Junzeng Xu (0000-0003-1467-7883, Hohai University) |
| Year | 2020 |
| Volume | 17 |
| Issue | 1 |
| Pages | 333-333 |
| Publication date | 2020-01-03 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | International Journal of Environmental Research and Public Health (JOURNAL) |
| Journal identifiers | ISSN: 1661-7827 • E-ISSN: 1660-4601 |
| Publisher | Multidisciplinary Digital Publishing Institute (PUBLISHER • CH) |
| DOI | 10.3390/ijerph17010333 |
| PMID | 31947763 |
| OpenAlex | W2997823535 |
| Language | EN |
| Citations received | 1 |
| References cited | 4 |
Rice water-saving irrigation technology can remarkably reduce irrigation water input and maintain high yield; however, this technology can also accelerate the decomposition of soil organic matter in paddy fields. The spatial and temporal distributions of soil organic carbon (SOC), water-soluble organic carbon (WSOC), and soil microbial biomass carbon (SMBC) under different water-carbon regulation scenarios were analyzed on the basis of field experiments in the Taihu Lake region in China to explore the effects of biochar application on SOC and its components in water-saving irrigation paddy fields. The response of soil catalase (CAT) and invertase (INV) to biochar application in water-saving irrigated rice fields was clarified. The results showed that water-saving irrigation reduced the SOC content by 5.7% to 13.3% but increased WSOC and SMBC contents by 13.8% to 26.1% and 0.9% to 11.1%, respectively, as compared with flooding irrigation. Nonflooding management promoted the oxidative decomposition of soil organic matter. Two years after straw biochar was added, paddy soil SOC content under water-saving irrigation was increased by 4.0% to 26.7%. The WSOC and SMBC contents were also increased by 4.0% to 52.4% and 7.0% to 40.8%, respectively. The high straw biochar addition rate exhibited great impact on SOC. Remarkable correlations among SOC, WSOC, and SMBC were observed, indicating that the addition of straw biochar improved soil labile C, such as WSOC and SMBC, which promoted SOC transformation and stability in paddy soil under water-saving irrigation. Soil CAT and INV were related to SOC conversion. In conclusion, the combination of water-saving irrigation and straw biochar addition was beneficial to the improvement of soil properties and fertility of paddy fields
Agronomy · Biochar · Biomass (ecology · Irrigation · Organic matter · Paddy field · Pyrolysis · Soil carbon · Soil organic matter · Soil water · Straw · Total organic carbon · Chemistry · Clay minerals and soil interactions · Environmental Science · Soil and Unsaturated Flow · Soil Carbon and Nitrogen Dynamics · Environmental Chemistry · Soil Science
Soil Carbon Sequestration Impacts on Global Climate Change and Food Security
Total Carbon, Organic Carbon, and Organic Matter
Effects of Biochar Amendment on CO2 Emissions from Paddy Fields under Water-Saving Irrigation
Land use structure optimization based on carbon storage in several regional terrestrial ecosystems across China
| Unique citing works | 1 |
|---|---|
| Citations per year | 0,25 |
| Citation span | 2022 - 2022 (1) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 1 |