A Review on Application of Rice Straw in Soil Carbon Sequestration and Greenhouse Gases Emission in Paddy Ecosystems
Rice straw application is a common measure in rice production,which has some ecological functions,such as carbon (C) sequestration,nutrient cycling promotion and fertilizer reduction etc.,however,it also exists the problem of greenhouse gases emission.Considering the dual effects of rice-straw application on C sequestration and greenhouse gas emissions increasing in paddy ecosystem,this paper summarized the current utilization of rice straw resources in rice ecosystem,explored the effects of rice straw incorporation on soil C sequestration,and summarized the greenhouse gas (CO2,N2O,and CH4)emission process and its microbial mechanisms under rice straw incorporation.We suggested that it should be strengthened in the coupling mechanism of the physico-chemical processes and microbial processes during the C sequestration process by rice straw incorporation and its roles in C sequestration,as well as the greenhouse gas emission mechanism in paddy ecosystem and its control measures for the purpose of seeking a win-win solution of soil C sequestration,greenhouse emission reduction and rice productivity enhancement in paddy ecosystem in the future.
Soil carbon sequestrationGreenhouse gas emissionRice straw incorporationPaddy soil
国家科技期刊平台
NSTL
万方数据
维普
