北方森林土壤彈尾蟲對N沉降的響應.pdf

1、分類號UDC密級公開暑哦≯聲哮碩士研究生學位論文北方森林土壤彈尾蟲對N沉降的響應申請人：學號：培養(yǎng)單位：學科專業(yè)：研究方向：指導教師：完成日期：蘭曉萍2111380農(nóng)業(yè)資源與環(huán)境學院植物保護農(nóng)業(yè)昆蟲與害蟲防治王慶貴教授孫元副教授2014年3月28日黑龍江大學碩士學位論文Abs仃actResearchondynamicsofCollembolaundersimulatednitrogendepositionwasdoneinNanweng

2、heinDaxinganlingMountainsfromspringtoautumnin2013Communitycharacteristicsofgroupnumberrelativeabundance，diversityindexweretheindicatorsofnorthemforestsoilCollembolaundernitrogendepositionTheresultsareasfollow：Thediversit

3、yindexofsoilCollembolawasdifferentfromthatofcontrolsiteItshowsthatonefactornitrogenincreasehasimpactondistributionThereare7familiesinthisresearch，andthedominantgroupisIsotomidae，whichisthehighestinCK，butdecreasesinnumber

4、inlowoneWiththeincreaseofnitrogen，itincreasedgraduallyThecommongroup，NeanuridaeincreaseswiththenitrogendepositionUnderdifferentdepositionlevel，thenumberofsoilCollembolaishighestinCK，theninTMandinTHInspringandautumn，thenu

5、mberislowerandalmost0inautumnInsummerthenumberdecreasedslightlyInTL，thenumberisslightlyhigherthanthatinTHItshowsthatdifferentnitrogenlevelhasimpactonsoilCollembolabiodiversityIndifferentnitrogendeposition，soilCollembolat

6、urntoappearonthesoilsurface，mostlyinlitterlayerand05cmlayerItshowsthatsoilCollembolatendtostayonsurfaceWiththenitrogenlevelincreases，thenumberofCollembolainlitterlayerand05cmiSincreaseInsummersoilCollembolaarehighest，the