Present Situation And Foreground Analysis Of Fishery Resources In Shandong

Based on the survey results of fishery resources in Shandong Province in August 2015 and August 2016,this paper analyzed the situation of fishery resources in Shandong Province,analyzed the types,quantity,catches,community characteristics.Finally,a comprehensive analysis of the situation of two years of resources,the results show that the situation of fishery resources have improved,the amount of resources show a recovery trend.The main results are as follows:(1)In August 2015 and August 1916,Shandong coastal fishing resources were investigated.In the past two years,there were 81 species of fishery resources,including 53 species of fish,22 species of crustaceans and 6 cephalopods.The dominant species are Engraulis japonicus、Loligo japonica、Metapenaeopsis dalei and Oratosquilla oratoria.The important species are Scomber japonicus、Trachypenaeus curvirostrisScomberomorus niphonius、Chaeturichthys stigmatias、Charybdis japonica、Thryssa kammalensis and Enedras fangi.There are 18 kinds of common species;12 species of rare species;rare species 40 species.(2)Shandong coastal fishery resources in the proportion of catches in more than 1% of Engraulis japonicu、Oratosquilla oratoria、Loligo japonica、Metapenaeopsis dalei、Konosirus punctatus、Charybdis japonica、Scomberjaponicus、Chelidonichthys kumu、Enedras fangi、Lophius litulon、Chaeturichthys stigmatias in August 2015 and in August 2016.(3)The species diversity index of fishery resources in August 2015 was between 0.75 and 3.22,with an average of 2.00 ± 0.56.The species diversity index was between 0.35 and 2.33,with an average of 1.55 ± 0.47.The species uniformity index was between 0.13 and 0.83,with an average of 0.57 ± 0.16.The species diversity index of fishery resources in August 2016 was between 0.52 and 3.67,with an average of 1.90 ± 0.53.The species diversity index was between 0.93 and 2.45,with an average of 1.69 ± 0.13.The species uniformity index was between 0.35 and 0.90,with an average of 0.64 ± 0.02.(4)According to the sweeping area assessment method,the amount of fishery resources in Shandong Province in 2015 is 1674020 tons,according to the catchable coefficient of 0.5,the catchable amount is 840,000 tons.2016 trawl survey Shandong offshore fishery existing resources for the 1520300 tons,according to the catchable coefficient of 0.5 dollars,catch the amount of 760,000 tons,compared with last year can be reduced by 9.52% catch,taking into account the August is the most fishery resources fast Growth period,so catchable year on year should be different.(5)There are 2 kinds of stocks more than 100,000 tons,such as Engraulis japonicas and Metapenaeopsis;There are 10 kinds of stocks between 10000 tons and 100,000 tons,such as Loligo japonica、Oratosquilla oratoria、Chelidonichthys kumu、Larimichthys polyactis、Todarodes pacificus、Octopus variabilis、Enedras fangi、Conger myriaster、Konosirus punctatus and Liparis tanakae;There are 11 kinds of stocks below 1000 tons and 10000 tons,such as Johnius belangerii、Portunus trituberculatus、Cynoglossus joyneri and Thryssa kammalensis in August 2015 and in August 2016.(6)Taking into account the amount of resources and the level of IRI,Engraulis japonicus、Metapenaeopsis dalei、Scomberomorus niphonius、Scomber japonicus、Loligo japonica、Oratosquilla oratoria、Chelidonichthys kumu、Larimichthys polyactis、Todarodes pacificus 、 Octopus variabilis 、 Enedras fangi 、 Konosirus punctatus 、Chaeturichthys stigmatias、Charybdis japonica are the main fishery resource.