Socio-economic factors influencing the adoption of low carbon technologies under rice production systems in China.

Background: Rice (Oryza sativa L.) production, such as farmers' livelihood and the soil quality, has been identified to be strong influenced by climate change in China. However, the benefits of low carbon technologies (LCTs) are still debatable in rice production for farmers, which have been identified to tackle agricultural challenges.

[Dynamic of carbon footprint and its composition for double rice production in Southern China during 2004-2014].

The area of rice production in Southern China is one of the most important farming regions in China, due to its great contribution to national food security. To assess the differences in carbon footprints (CF) of double rice production will benefit the achievement of low carbon agriculture. Base on the statistical data of crop yield and farmland investment of double rice production from 2004 to 2014, the spatiotemporal dynamics of CF and its composition of double rice in Southern China was estimated using the theory of CF and life cycle assessment method.

[Effects of long-term tillage and rice straw returning on soil nutrient pools and Cd concentration].

The objective of this study was to assess the effects of tillage and straw returning on soil nutrient and its pools, and soil Cd concentration, and to identify the strategies for rational tillage and remediation of Cd contaminated paddy fields. The experiment was established with no-tillage with straw retention (NTS) , rotary tillage with straw incorporation (RTS) , conventional plow tillage with straw incorporation (CTS), conventional plow tillage with straw removed ( CT) from 2005 to 2013. The results indicated that tillage and rice straw retention had a great impact on soil properties at 0-10 cm soil depth.

[Carbon efficiency of double-rice production system in Hunan Province, China].

Improving the carbon efficiency of crop production systems is one of the important ways to realize low-carbon agriculture. A life cycle assessment approach and input-output calculation method was applied for a double-rice production system in the Hunan Province. Based on statistical data of crop yield and investment in the production system in the period from 2004 to 2012, carbon emission, carbon absorption, carbon efficiency and their dynamic changes of the double rice production systems were estimated.

Emissions of CH4 and N2O under different tillage systems from double-cropped paddy fields in Southern China.

Understanding greenhouse gases (GHG) emissions is becoming increasingly important with the climate change. Most previous studies have focused on the assessment of soil organic carbon (SOC) sequestration potential and GHG emissions from agriculture. However, specific experiments assessing tillage impacts on GHG emission from double-cropped paddy fields in Southern China are relatively scarce.