Investigation And Study On Forestry Pests In Langzhong City

Forestry pest prevention and control is an important part of forestry work.In forestry construction,it undertakes the important task of protecting forest resources,maintaining ecological security,promoting ecological construction and promoting ecological civilization.It is an important guarantee force for forestry development.The spread and spread of diseases and insect pests pose a threat to forest resources,ecological environment and sustainable development of forestry,and cause local ecological disasters and economic losses.For effective forestry pest prevention and control the damage scope continues to expand,langzhong conducted forestry pests census,aims to further clarify langzhong forestry exotic pests and local forestry pest species,distribution,occurrence regularity and damage degree,and so on and so forth,supplement and improve the forestry pests and disease epidemic data and detailed control plant diseases and insect pests on forest resources and forestry production losses,to strengthen forestry quarantine pest monitoring and early warning,disaster,disaster prevention and mitigation,and emergency relief work,etc.In this general survey of langzhong city,a total of 50 woodland types,including woodland,open woodland,shrub woodland,undeveloped forest and nursery,as well as the main tree species and forest diseases and insect pests of woodland materials in the production and business places of sifang trees,timber and its products,have been completed.A total of 50 hiking routes,totaling 3,399.5 kilometers,were completed.There were 1,042 hiking sites and 36 standard sites.The main research results are as follows:(1)Langzhong conducted 5 rounds of investigation,and the surveyed tree species included more than 70 species,including cypress,alder,masson pine,qingoka,poplar,walnut,cizhu,weeping willow and kiwi,etc.(2)A total of 411 specimens of diseases and insect pests were collected in this survey,among which 50 were diseases and 200 were pests.63 insect pests,211;1 species of harmful plant,no.4,479 ecological photos of forest diseases and insect pests were taken.(3)The census recorded 162 kinds of forest diseases and insect pests,90 kinds of insect pests,71 kinds of diseases and insect pests,1 kind of diseases and insect pests.Among them,there are 75 kinds of insect pests,44 kinds of insect pests,29 kinds of disease and insect pests and 1 kind of disease and insect pest in sichuan forestry census technical plan.The census found 16 kinds of dangerous forest diseases and insect pests,including 7 kinds of pests,8 kinds of diseases and 1 kind of harmful plants.(4)In this general survey of forest diseases and insect pests,langzhong city has not found any quarantine objects of national forest diseases and insect pests general survey or supplementary quarantine objects of sichuan province.(5)The total area of forest pests and diseases in the city is 160125.05 mu.According to the degree of hazard,the occurrence areas of light,medium and heavy are 152791.70 mu,4072.12 mu and 3261.27 mu respectively.(6)According to the biological species of forestry,the area of disease occurrence was 55400.61 mu,occupying 5.81% of the woodland area.The occurrence area of insect pests was 104,724.44 mu,accounting for 10.97% of the woodland area.(7)The langzhong area according to the statistics of main tree species,the forestry pest diseases and insect pests occurrence area of 110791.05 mu,the cedar diseases and insect pests occurrence occupies 11.61% of the forest area,covers an area of 2001.33 mu,the alder,diseases and insect pests occurrence of pinus massoniana forest land area of 0.21%,diseases and insect pests occurrence area of 40001.18 mu,occupies 4.19% of the forest area,covers an area of 4011.53 mu,the poplar diseases and insect pests occurrence occupies 0.42% of the forest area,covers an area of 3319.96 mu,the walnut diseases and insect pests occurrence of forest land area of 0.35%.This study identified the types,distribution,occurrence patterns and hazard levels of harmful organisms from the forestry industry and the local forestry industry in Langzhong City,and supplemented and improved the data on the outbreak of harmful organisms in forestry.It has detailed the losses caused by harmful organisms to forest resources and forestry production,and laid a foundation for strengthening forestry harmful biological monitoring and early warning,quarantine disaster prevention,disaster prevention and reduction,and emergency relief.