| This research selects by examinations90kinds of our country typical model agriculture and forestrypests as object and passes to check related data, in building up the foundation that90kinds of pestsgeography distribute a database, make use of ArcGIS9.2softwareses to draw each pest very enrichgeography of degree to distribute diagram, never analyze geography of pest to distribute structure and formin detail with angle;On this foundation, build up pest geography to distribute with matching of weathermain factor relation, analysis pest and it abundant the relation between degree and weather mainfactor.Hoping this research can prevent and cure a work to provide a certain basis for the our countryagriculture and forestry pest, for develop the influence research that the weather variety distributes structureand form to insect geography to provide certain reference.Study conclusions:（1）90kinds of geography of agriculture and forestry pests distribute asymmetry and north Chinaclassify cloth category and amount in area and China large, receive new area and green category andamount hiding to classify cloth are little;32kinds in90kinds of pests belong to nationwide spread a kind,29among them distribute more concentrated, the main concentration is distributed to an our country ofdepartment region in Middle East, distributing of3kinds of pestses belong to widely spread a type;Thereare58kinds of pests that distribute opposite and narrow,34among the pests distribute scope very andnarrow,16kinds of pests present to take a form to distribute,8kinds of pests present noodles-like in shapedistribute;From distribute of interrupted, continuous condition to see, there are47kinds of insectsbelonging to distributing in a row,43kinds of insects belong to interrupted to distribute.Have some aninsect moreover in addition to distributing in the mainland, have been already distributed as well on thegroup of islands.（2）The insect distributes with longitude and latitude degree and send lord the plant contain certainrelation.90kinds of agriculture and forestry pests that this selected works takes are in7°N-53°N and76°E-135°E;Each kind longitude and latitude degree difference of the pest doesn’t same alike is each, differless than13°, or longitude to differ pest category inside less than15°scopes in the degree of latitudemore;The degree of latitude is worse big than20°, or longitude to differ the pest category in more than30°scopes less, distributing of pest the scope is very wide.Distribute an opposite and narrow insect of thesending of opposite and extensive pest lord plant score cloth to have to be abundant in90kinds of pestsmoreover.（3）The characteristic that the pest is feat to distribute the weather of area is each not same.90kindsof agriculture and forestry pests are all feat to distribute the year of area the air temperature is6.73℃~20.76℃, year the all tallest air temperature is13.16℃~25.43℃, the year all lowest air temperature is1.19℃~17.51℃, year the extreme tallest air temperature is33.46℃~39.79℃, year extreme and lowestair temperature BE-29.92℃~0.41℃, year the biggest value of the all tallest air temperature can reach to29.76℃, year the minimum value of the all lowest air temperature can decline to-12℃, year the biggest value of the extreme tallest air temperature can reach to42.61℃, year the minimum value of the extremeand lowest air temperature can decline to-49.5℃, the air temperature leads Gao or lead low district pestcategory less;The pest is feat to distribute the year of area to all decline amount of water is a384.8mms~1961mms, the year declines the biggest value of amount of water to reach to a2585mms, the yeardeclines the minimum value of amount of water to decline to a16mms, the year declined water to oncemeasure Gao or lead low scope inside the pest distributing is very few;The pest is all feat to distribute theyear of area the relative humidity is56.65%~80.29%, the biggest value of year relative humidity can reachto87.79%, the minimum value of year relative humidity can decline to29.56%, the pest distributing in thetoo dry or damp environment grows a number also less;The pest is all feat to distribute the year of areasunshine the number is a1298hs~2686hs, year sunshine number of the biggest value can reach to a3498hs, year sunshine number of the minimum value can decline to a957hs, year sunshine count excessive orlead little the pest distributing is quite a little.（4）The different pest is limited by different weather main factor.Among them, sunshine number isolives slice shield Jie and two colorses bend a neck elephant, little leaf female the Zhen wood insects, suchas Du elephant and oblique line net E...etc. distribute of restriction factor;The year declines amount ofwater and relative humidity is orchid circle the Jie and the star anise insects, such as substantial elephantand book leaf elephant...etc. distribute restriction factor;Year all the air temperature is the far east Chinesefir Bao Jie and coffee insects, such as black Kui Jie and longan Cape cheek wood louse...etc. to distributeof restriction factor;Sunshine and decline water is the Cape spot Juan net E, bright long feet tumblebugrestriction factor, degree of humidity combines and the sunshine is the restriction factor that Liu Ying YeFeng distributes.（5）The pest enriches the geography structure and form of degree under the influence of longitudeand latitude degree and weather main factor.The abundant degree relationship with of longitude and latitudedegree basically distributes for positive Tai, and, abundant degree with both of all present positiverelativity(r=0.139, p<0.01;R=0.231, p<0.01), has the line sexual behavior that the pole shows Zhao.Eachweather main factor descends pest abundant degree the variety is up total to present parabola of trend, yearall air temperature at the all tallest air temperature of3℃~18℃, or year at10℃~22℃, or year alllowest air temperature at-5℃~15℃, or the extreme tallest air temperature at35℃~42℃, or extremeand lowest air temperature at-35℃~-25℃, or year relative humidity decline in55%~85%, or year theamount of water is in the300mms~1000mms, or year sunshine count in the2200hs~the3200h enrichdegrees inside the scope all higher. |
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