太仓港自2012年以来便成为全国海运进境木材的最大口岸，主要包括进境原木和板材。近年来，加拿大SFP板材的进口量占板材总量的比例保持在85%以上，是太仓口岸进境板材中最重要的种类。SPF板材指白云杉、恩格尔曼云杉、扭叶松和高山冷杉等四种相似材种，是所有加拿大树种里森林储量最大的商用树种。 （一）本研究对太仓口岸2011～2015年主要进境板材进行相关风险对比评估，将进口的板材风险划分为五个等级并采取相应的分类管理措施。风险系数达到20%以上的板材为高风险，10%～20%之间为较高风险，两者的现场查验开箱比例每批不低于总箱量的30％，检查根数不得低于总根数的10％，后场拆箱结束后，还必须再检查一次。风险系数在5%～10%之间为中风险，现场查验开箱查验箱数不低于总箱量的25%。在1%～5%之间为低风险，现场查验开箱比例不低于20%；风险系数小于1%为极低风险，现场查验开箱量不低于15%。强化木材后续监管，后场掏箱比例100%。根据查验情况形成太仓口岸箱装锯材黑白名单，对违规现象发生严重的物流企业，提高查验中心的开箱和掏箱查验比例，以确保太仓口岸进境箱装木材的生物安全和质量安全。 （二）本研究综合考虑截获有害生物的检疫地位、截获时的活体、死体状况，以及有害生物的截获频次等风险要素，创新了板材风险分析评估方法，把截获的有害生物分为四类，对其风险性程度进行赋值，并应用在SPF板材风险分析中。 根据创新的评估方法，SPF板材疫情风险系数(RI)=（活体检疫性有害生物危险值+活体非检疫性有害生物危险值+死体检疫性有害生物危险值+死体非检疫性有害生物危险值）/最大危险值=（0.1403+0.2273+0.1842+0.1606）/34.848=0.0204，结果显示SPF板材疫情风险值为极低。 （三）在掌握太仓口岸SPF板材携带疫情的情况下，本研究从406种截获害虫中挑选了14种危害风险大的害虫进行进一步细化风险分析。最终得出结果显示其中4种高风险有害生物，黄杉大小蠹Dendroctonus pseudotsugae、红翅大小蠹Dendroctonus rufipennis、中对长小蠹Platypus parallelus、美松齿小蠹Ips pini均为检疫性有害生物；4种中风险有害生物，南部松齿小蠹Ips grandicollis、郎极齿小蠹Ips latidens、落叶松大小蠹Dendroctonus simplex、西部松大小蠹Dendroctonus brevicomis也均为检疫性有害生物；6种低风险有害生物，褐梗天牛Arhopalus rusticus、粒点六齿小蠹lps concinnus、中欧山松大小蠹Dendroctonus ponderosae、黑条木小蠹Trypodendron lineatum、欧洲根小蠹Hylastes ater、松红褐干小蠹Hylurgops rugipennis，其中2种为检疫性有害生物，分别为粒点六齿小蠹lps concinnus、中欧山松大小蠹Dendroctonus ponderosae。

Since 2012Taicang Port has been the largest port for maritime imported timber, mainly including logs and lumber.In recent years,more than 85% lumber are SFP sheet from Canada,which is the most important category among imported timber in Taicang Port.SPF plates are made of four similar treespecies,i.e., white spruce, Engelman spruce, twigs and alpine fir, these four trees have the greatest biomass among the commercial forest reservedin Canada. (1)In this study, the risk analysis on SFP sheet imported in Taicang Port from 2011 to 2015 were performed, as a result the risk is divided into five grades, and the corresponding management measures are suggested to deal with varied risk grades.Lumberwith arisk greater than 20% is on Extreme Level.Lumber witha risk between 10% and 20% is in High Level. Containersloadedlumberup tothese two levelsmust be checked out on-site at a ratio of no less than 30%, with no less than 10% of total of lumbershould be checked at same time; moreover, after the unpacking,thelumbershould be checked once again. Lumber with a risk between 5% and 10% is on Moderate Level,up tothis level, no less than 25% of containers should be checked.Lumber with a risk less between 1% and 5% is on Low Level, up tothis level,no less than 20% of containersshould be checked.Lumber with a risk less than1% is in Extreme Low Level,up tothis level, no less than 15% of containers should be checked.Follow-up supervision of lumber should be strengthened. All of the cantainersd should be unpacked in the given area.A black&white list will be generatedbased on the inspection results, and accordingly, the check proportion of containers from those logistics enterprises will be increased, in order to ensure the biosecurity and quality safety. (2) In this study, the method for risk analysis was innovated based on the consideration of the quarantine status of intercepted pests, the situation in which they were intercepted aliveor dead, and the frequency of pests being intercepted. The intercepted pests were divided into 4 categories, each category was assigned a numerical value, and were applied in the SPF sheet risk analysis. According to the innovated method, the index of risk factor can be calculated by the formula: RI= (livingquarantine pest risk value + livingnon-quarantine pest risk value + dead quarantine pest risk value + dead body of non-quarantine pest risk value) / maximum risk value. The the index of risk factor for SPF plate = (0.1403 + 0.2273 + 0.1842 + 0.1606) /34.848 = 0.0204, the result shows that SPF plate risk value is very low. (3) Based on the investigation on the pests of SPF sheets from Taicang Port, , 14 harmfulpests out of 406 pests were selected for further risk analysis.Asaresult, four quarantine pests,Dendroctonus pseudotsugae,Dendroctonus rufipennis,Platypus parallelus and Ips pini, are considered as pests with high risk; another four quarantine pests, Ips grandicollis,Ips latidens,Dendroctonus simplex, and Dendroctonus brevicomis are considered as pests with middle risk. Six pests are considered as pests with low risk, including Ips concinnus, Dendroctonus ponderosae, Arhopalus rusticus, Trypodendron lineatum, Hylastes ater and Hylurgops rugipennis, among them, Ips concinnus and Dendroctonus ponderosae are quarantine pests.