Principal Investigator: Ding Yanfeng
Funding Received: 21.96 Million RMB
Sponsored by: Ministry of Science and Technology, P. R. China
Project Period: July, 2017.7─ December, 2020
Brief Introduction:
The earth's climate is experiencing significant change characterized by global warming, which is directly and seriously affecting crop production and food security — two essential components of agriculture. Rice is a staple food for approximately half of the population of the world. Global climate changes have serious impacts on rice production. The emissions of CH4 and N2O in paddy fields, responsible for global greenhouse gas emissions, have drawn widespread attention. Climate change induces changes in air temperature, light and water resources and frequent occurrence of extreme heat. It is urgent to encourage research on the mechanisms of response and adaptation in rice production system to the global climate change, and to propose adaptive techniques for the rice production system to cope with climate change.
This study will focus on: (1) impacts and the likely effects of climate change on rice production using predicted climate change scenarios; (2) mechanisms of rice productivity in response to climate change and development of high-yield cultivation techniques; (3) mechanisms of rice quality in response to climate change and development of high-quality cultivation techniques; (4) mechanisms of carbon and nitrogen in paddy fields in response to climate change and development of carbon-enrichment cultivation techniques; (5) mechanisms of greenhouse gas emissions in response to climate change in paddy fields and development of cultivation techniques for reducing greenhouse gas emissions; (6) development of cultivation techniques for indica rice (double-cropping, single-cropping) and japonica rice (southern/northern varieties) adaptive to respective climate change.
The objectives are (1) to elucidate the change characteristics of climate factors such as temperature, light, precipitation and CO2 concentration in the middle and lower reaches of the Yangtze River, northeast China and along the Yellow River valley, as well as their relationships with productivity of the rice system, resource utilization and environmental cost; (2) to explore the effects of the key environmental factors of temperature and light on rice yield and quality, to study the mitigated effect of varieties, water and fertilizer and other cultivation factors on these abiotic stresses, and to propose cultivation techniques adaptive to the changed climates; (3) to reveal the relationship of conversions in carbon and nitrogen with greenhouse gas emission of CH4 and N2O in paddy soils, to explore the physiological and ecological basis and regulation mechanisms of greenhouse gas emissions, and to propose cultivation techniques for reducing greenhouse gas emissions; (4) to build a new cultivation model with both reduced emission and adaptive capability through integrating the existing typical rice systems with the rice cultivation techniques proposed in this research.
