1、分類號(hào)X144學(xué)校代碼10129UDC502學(xué)號(hào)2012204076罕臺(tái)川流域上游水土保持措施減水減沙效益研究ResearchonBenefitofRunoffSedimentReductionofSoilWaterConservationintheUpperReachesofHantaichuanWatershed申請(qǐng)人：王云毅學(xué)科門類：管理學(xué)學(xué)科專業(yè)：土地資源管理研究方向：城鄉(xiāng)土地規(guī)劃與管理指導(dǎo)教師：秦富倉(cāng)教授論文提交日期：二〇一五

2、年六月ResearchonBenefitofRunoffSedimentReductionofSoilWaterConservationintheUpperReachesofHantaichuanWatershedAbstractTheupperreachesofHantaichuanWatershedbelongstothefirstsubregionofloesshillygullyregionitstypicalfsoilwate

3、rconservationthispapertakestheupperreachesofHantaichuanWatershedastheresearcharea.FirstlyByunderstingit’spresentsituationoflusethemanagementpresentsituationofsoilwaterconservationtheacteristicofwatersedimentinwatershedco

4、mprehensively.SecondlySetupthestardrunoffplotexperimentobservationtodeterminethedifferentlusetypes’runoffdeptherosionmodulus.ThirdlyBasedontheresearchofwaterstagedepositedsedimenttheservicelifeoftypicalcheckdams.thenused

5、“soilconservationmethod”tocalculatethethebenefitofwatersedimentreductionofsoilwaterconservationmeasuresoftheupperreachesofHantaichuanWatershedin19982013usedthe“hydrologymethod”tocalculatethebenefitsofwatersedimentreducti

6、onofsoilwaterconservationmeasuresfrom1990to1999from2000to2010atthesametime.contrastanalyzedthetwomethods’resultsofwatersedimentreduction.thefollowingaremainconclusions:(1)TheannualrainfallamountchangeofHantaichuanwatersh

7、edisbiggermethan70%oftheannualrainfallisseasonalrains.Runoffhasahighconcentrationofsedimenttherunoffsedimentdisgeannualdifferenceisgreatreducedobviouslyrecentlyitdistributesunequallyinayear.(2)Therunoffdeptherosionmodulu

8、sofdifferentlusetypesin2013changingtrendconsistentlyitshowsthat:wastelclosedfestgrassplantingeconomicfestarbfestshrubberymixedfestofarbshrubberythewastel’srunoffdeptherosionmodulusarebiggest10.7mm8279tkm2aseparately.them

9、ixedfestofarbshrubbery’srunoffdeptherosionmodulusaresmallesttheyare4.5mm2696tkm2aseparately.(3)Thekeydamwhichwerebuiltin1980~1989oftheupperreachesofHantaichuanWatershedservicelifeis26yearslongerthandesignedf6years.Thekey