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1、西安理工大學博士學位論文農業(yè)干旱災害風險管理理論與技術姓名:陳曉楠申請學位級別:博士專業(yè):水文學及水資源指導教師:黃強;邱林20080401西安理工大學博士學位論文型。利用這些模型不僅能夠完成不同時間尺度下的干旱程度的風險評估,而且能較準確地反映農業(yè)的損失?!?4)提出多種規(guī)避、降低農業(yè)干旱災害風險的策略,包括建立起基于群決策的農業(yè)干旱預警模型、基于自適應隨機慣性權粒子群的農業(yè)水資源優(yōu)化配置模型以及農業(yè)水資源承載力模型,對農業(yè)干旱災害實施全面、綜合管理,實現(xiàn)水資源的可持續(xù)利用。(5)分析農業(yè)干旱程度的概率分布規(guī)律,提出了使用神經網絡擬合干旱經驗頻率的方法,避免了事先假定其理論分布
2、形式的不足。在此基礎上,借助模擬技術對灌溉工程的效益進行了風險評估;將模糊物元模型引入到灌溉方案優(yōu)選問題研究中,結合協(xié)商定權和熵權理論,實現(xiàn)了灌溉備選方案的優(yōu)選。這些成果能為研究區(qū)的長期規(guī)劃提供科學的依據(jù)。關鍵字:農業(yè)干旱災害風險管理:群決策;混沌優(yōu)化算法:粒子群優(yōu)化算法;云理論;信息擴散;遺傳程序設計;模糊物元本研究得到河南省高校創(chuàng)新人才培養(yǎng)工程項[](HNCX2003.17)的資助Il英文摘要Title:THEORYANDTECHNOLOGYOFRISKMANAGEMENTFORAGRICULTURALDRoUGHTDISASTERMajor:WaterResourcesan
3、dHydrologyName:XiaonanChenSupervisor:Prof.QiangHuangProf.LinQiuAbstractsignature:遜羔i絲吵SWithrapideconomydevelopmentandpopulationincrease,itismoreandmoreimportantforpeopletotakeefficientoperationsforagriculturaldroughtdisaster.Wehaveknownthatdrou出disastercarlnotbeavoidedandonlyreducelossbyallme
4、ans.Traditionalmethodsgetinapplicableunderseriousconditionofwaterdeficit.Itisnecessarytotakeriskmanagementfordroughtdisaster.Howtorealizeefficientmanagementfordrought?Thisisthehotspotanddifficultyinwaterresourcesfield.Agricultureisbasisofnationaleconomyinourcountry.nISvcryurgenttomakeresearch
5、toriskmanagementofagriculturedroughtthoroughly.Thispaperestablishesthesystemofriskmanagementforagriculturaldroughtdisasteronbasisoftheresearchtrendintheworld,putsforwardmethodsfordescriberegulationsofagriculturaldroughtintimeandspacebasedonuncertainandincompletetheory,andsuggestsriskassessmen
6、tmodelforagriculturaldroughtwiththetechniqueofdatamining.Themainresultsofthispaperareasfollows:(1)Pointoutthatdroughtdefinitionrelatestotwoaspectsofwaterdemandandwatersupplv’andabnormalfeatureofdroughtshouldbeconsidered.Basedonthisidea,improveddroughtdefinitionthatissuittopracticeissupposed.S
7、uggestextendedriskandextendedriskofnanlraldisasterthatdescribeconceptionsbydisasterinfluenceandforecastingliability.Onthebasisofextendedrisk,systemofriskmanagementforagriculturaldroughtisestablished.(2)Cloudtheoryandinformationdiffusiontechno