1957-2007年贛江、撫河與潦河流域的輸沙變化及其環(huán)境意義.pdf

1、南昌大學(xué)碩士學(xué)位論文19572007年贛江、撫河與潦河流域的輸沙變化及其環(huán)境意義姓名：鄧月萍申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：環(huán)境工程指導(dǎo)教師：吳代赦虞江萍20100601ABSTRACTABSTRACTBasedonlongseriesdata(19572007)ofthesedimentdischargeatthethreehydrologicalstationsoftheWaizhouStationofGanRiver，theLijiaDu

2、StationofFuRiverandtheWanjiabuStationofLiaiver，thispaperaimedtevealthevariationpaRemofthesedimentdischargeandthecausesofwaterlossandsoilerosioninthethreedrainageareasBasedonthestudy，someconclusionsCallbedrawn：1、Theannual

3、averagerunoffofthethreeriverstendedtofluctuatewithoutanyperiodicityfromyeartoyearinthe51yearsSumofthemonthlyaveragerunoffofthehighflowperiod(fromMarchtoJune)amountsto4901％，5440％and4694％oftheannualrunoffinGanRiverFuRivera

4、ndLiaoRiverrespectively2、ThereisasignificantpositivelylinearcorrelationbetweensedimentconcentrationandrunoffofeachriverItindicatesthatthesedimentconcentrationiscontrolledbytheamountofprecipitationinthethreedrainageareasT

5、hesedimentconcentrationrepresentstheerosivepowerofrainfallontheearth’SsurfaceTherelationbetweendecennialrunoffsandsedimentconcentrationswasstudied，andtheslopeandinterceptoftheregressionequationsindicates：theerosivepowero

6、frainfallontheearth’Ssurfacehasatendencyofdecreasingafter1980sintheGanRiverBasinwhereasitincreasedfrom1950stomid1980sanddecreasedsubsequentlyinFuRiverBasin，anditincreasedfrom1950stothelate1970sanddecreasedsubsequentlyinL

7、iaiverBasin3、Theannualaveragesedimentdischargefrom1957to2007was89847445775MtonforGanRiverBasin，1402347533MtonforFuRiverBasinand368742380MtonforLiaiverBasinrespectivelyThemonthlyaveragesedimentdischargeinthehighflowperiod

8、(fromMarchtoJune)amountsto4901％，5440％and4694％oftheannualsedimentdischargeinGanRiverBasinFuRiverBasinandLiaoRiverBasinrespectively4、Theannualaveragesedimenttransportmodulusfrom1957to2007was111t／km2aforGanRiverBasin887t／km