Fishery Modernization 

Abstract: Impacts on carbon cycle of Chlamys farreri by respiration,calcification and biodeposition in Sanggou Bay was researched by the method of laboratory experiment and mathematical stimulating.These were 1.22×104t and 7.57×102t carbon releasing each year by respiration and calcification of Chlamys farreri respectively;and these was 8.71×104t carbon sinking to the bottom of sea by biodepositon,most of which would been buried and leaving geochemical circulation.Though carbon was releasing by respiration and calcification,more carbon was buried by biodepositon.So Chlamys farreri should be considerd as carbon sink as a whole.

Abstract: Recirculating aquaculture system(RAS) is the important model in the global aquaculture industry,and also is the important way for harmonious development of aquaculture and environment,concerning its resource-saving,environment-friendly and product safetyThe paper reviews the actual state of recirculating aquaculture system's developing process in china,and its main problemsThen,discussing the opportunities,development and planning for marine industrialized aquaculture during the 12th Five Year Plan Period in chinaFinally,pointing out the development thoughts and key tasks for the future

Abstract: This paper analyzes parents and recruitment of hairtail fishery resources in East China Sea from 1995 to 2007 since the regulation of summer closed fishing has been put into practice,Ricker and Beverton-Holt models are used in fitting with the relation between parents and recruitment of hairtail.The results show that on status of summer closed fishing,the relativity between parents and recruitment of hairtail exists.The expression of Ricker model is R=6.934 7Pe-0.033 916P,of which the maximum recruitment is 75.21×108ind,parents for maximum recruitment is 29.48×108 ind,maximum maintainable yield is 50.44×108ind(about 70.08×104t),parents for maximum maintainable yield is 20.86×108ind,recruitment for maximum maintainable yield is 71.30×108ind.The expression of Beverton-Holt model is P/R=0.101 17+9.164 5×10-3P,of which the maximum maintainable yield is 50.74×108 ind(about 70.52×104 t),parents for maximum maintainable yield is 23.67×108 ind,recruitment for maximum maintainable yield is 74.41×108 ind.under current regulation of summer closed fishing,the fitting results of Ricker and Beverton-Holt parents-recruitment models of hairtail in East China Sea are similar.The available and reproduction fishery resources,recruitment of haritail are positively responded in East China Sea since the regulation of summer closed fishing was put into practice,whereas the spawning stock can't keep in sustainable and effective increase because of overfishing.At present,protecting parents as well as increasing spawning stock are the main targets for protecting hairtail recourses in East China Sea,and postponing the finishing time of summer closed fishing is an effective solution.

Abstract: This study report reviews and summarizes the main development course and current main features of China industrial recirculating aquaculture,analyses the main issues existing in this industry,and points out the weak points and the orientation of efforts from the point of techniqueThen,the report sets forth the need of recirculating aquaculture technology for promoting sustainable development of China aquaculture industry,and gives the suggestion and policy for the development of industrial recirculating aquaculture at the present stage