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China's convenience food industry is developing rapidly. In recent years, the development of new product standards for convenience food has been continuously strengthened. Besides the approved industry standards such as “convenience dishes”, there are a number of industry standards currently being approved for development plan, which will effectively guide and standardize the industry's high-quality and healthy development. But on the whole, the product standard in this field needs to be revised and the product standard system needs to be further improved. By analyzing and interpreting the current standards and the standard system and the main contents of the newly formulated standards, this paper sorts out the main problems in the formulation and implementation of the standards, and puts forward the direction and suggestions for the construction of the standard system and its future revision, to facilitate the food industry’s product research and development, production and supervision to provide a technical basis.

By using static chamber/ gas chromatography, the CO2 fluxes in a Carex cinerascen-domi- nated wetland in the Poyang Lake Nanji Wetland National Nature Reserve were measured in non- flooded period (from September 2009 to April 2010). Two treatments were installed, i. e. , soil-plant system (TC) and aboveground plant removal (TJ), representing ecosystem respiration and soil respi- ration, respectively. There was an obvious seasonal variation in the ecosystem respiration and soil res- piration. The respiration rate in treatment TC ranged from 89.57 to 1243.99 mg CO2•m-2•h-1, and that in TJ was from 75.30 to 960.94 mg CO2•m-2•h-1. Soil respiration accounted for 39% -84% of ecosystem respiration, with an average of 64%. Soil temperature was the main factor controlling the ecosystem respiration and soil respiration, explaining more than 80% of the respiration vari- ance. The temperature coefficient (Q10 ), an index of temperature sensitivity for respiration, was 3.31 for ecosystem respiration and 2.75 for soil respiration. The Q10 value was higher in winter than in autumn and spring. No significant correlation was observed between soil moisture and CO2 flu- xes. In non-flooded period, the C. cinerascens-dominated wetland acted as a carbon sink of atmos- pheric CO2, with a carbon uptake of 1717.72 g C•m-2. [ABSTRACT FROM AUTHOR]

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