Rice paddy soils are a quantitatively important carbon store according ...
2021年8月6日 · Rice paddies account for ~9% or the world’s cropland area and are characterized by environmental conditions promoting soil organic carbon storage, methane emissions and to a lesser extent...
Greenhouse gas emissions and mitigation in rice agriculture
2023年9月26日 · Rice paddies supply half the global population with staple food, but also account for ~48% of greenhouse gas (GHG) emissions from croplands. In this Review, we outline the characteristics of GHG...
Does rice paddy management increase soil organic carbon in the …
2024年3月1日 · Factors controlling SOC storage in the paddy include soil management (e.g., duration under paddy, fertilizer application, rice straw addition), cropping system (e.g., single rice, double rice, triple rice), and initial SOC stock level, based on long-term field studies and meta-analyses that covered both temperate and warm temperate regions ...
Double paddy rice conversion to maize–paddy rice reduces carbon ...
2020年6月10日 · Increasing water scarcity and demand for biofuels and fodder has resulted in a change to traditional farming cropping system from double paddy rice (early rice–late rice, sign as ERLR) to maize–paddy rice (spring maize–late rice, sign as SMLR) in Asia.
Carbon input and allocation by rice into paddy soils: A review
2019年6月1日 · Our main objectives are to derive generalizations on (1) partitioning of C assimilated by rice with special focus on belowground allocated C, (2) estimating the amount of C input by rice plants into paddy soils, and (3) the pathways of photosynthesized C allocation in the rice–soil–microbiota system during rice growth.
Global Change Biology | Environmental Change Journal - Wiley …
2024年3月4日 · Using 104 rice paddy sampling sites that have been in continuous cultivation since the 1980s across China, we studied the changes in topsoil (0–20 cm) labile organic C (LOC I), semi-labile organic C (LOC II), recalcitrant organic C (ROC), and total SOC.
Quantifying differences in water and carbon cycling between paddy …
2018年4月6日 · We compared water and carbon fluxes of paddy and rainfed rice by canopy scale gas exchange measurements, crop growth, daily evapotranspiration, transpiration and carbon flux modeling.
Elevated CO2 concentrations increase carbon sinks in paddy …
2023年9月8日 · Rice paddies play a crucial role in the global carbon cycle by sequestering or releasing carbon dioxide (CO 2) into the atmosphere. However, the effects of net CO 2 exchange in paddy fields under elevated CO 2 concentrations (e [CO 2]) have rarely been assessed in previous literature.
Carbon and nitrogen availability in paddy soil affects rice
2018年11月10日 · The study was focused on interactions between C and N availability and consequences for rhizodeposition and microbial community structure in paddy soil. Rice continuously labeled in a 13CO2 atmosphere was fertilized with either carboxymethyl cellulose (CMC) (+C), ammonium sulfate (+N), or their combination (+CN), and unfertilized soil was used ...
Carbon sequestration in paddy soil as influenced by organic and ...
2020年3月19日 · Rice plants mediate carbon (C) emission from paddy soils but also absorb it as carbon dioxide (CO 2) during photosynthesis. This means that net C emission could vary depending on rice cultivation techniques, which is not well documented in Asian regions.