曲靖市主要水源地水域面积时空变化及其响应机制研究摘要通过量化分析，揭示曲靖的湖泊或水库资源的分布状况及变化特征，找出曲靖的湖泊或水库变化的根本原因，为曲靖水资源的保护及利用提供理论依据。选取了1988、1996、2003、2009、2017共五年TM/OLI遥感影像，选取了NDWI法和MNDWI法，对曲靖市主要水源地水域面积信息进行了提取。1988～2017年间，主要水源地水域面积呈现出波动上升的趋势，主要水源地水域面积年变化趋势表现为“上升-下降-上升-下降”的“M”型波动增加。年降水量的变化、地下水的补给、气温、除险加固工程、生态投资的增加等综合影响了曲靖市主要水源地水域面积的变化。关键词：水体提取；曲靖市；时空变化TemporalandSpatialChangesofWaterAreaandItsResponseMechanismofMainWaterSourceAreasinQujingCityAbstractThroughquantitativeanalysis,thispaperrevealsthedistributionandchangecharacteristicsofthelakeorreservoirresourcesinQujing,andfindsoutthefundamentalreasonsforthechangeofthelakeorreservoirinQujing,whichprovidestheoreticalbasisfortheprotectionandutilizationofthewaterresourcesinQujing.TM/OLIremotesensingimagesof1988,1996,2003,2009and2017wereselected.NDWIandMNDWImethodswereselectedtoextractwaterareainformationofmainwatersourcesinQujingCity.From1988to2017,thewaterareaofthemainwatersourcesshowedanupwardtrendoffluctuation,andtheannualvariationtrendofthewaterareaofthemainwatersourcesshowedanincreaseof"M"typefluctuationof"rising-falling-rising-falling".Thechangesofannualprecipitation,groundwaterrecharge,airtemperature,reinforcementprojects,andtheincreaseofecologicalinvestmenthaveacomprehensiveimpactonthechangesofwaterareaofthemainwatersourcesinQujingCity.Keywords:waterbodyextraction；QujingCity；spatial目录1引言..............................................................11.1研究区概况..................................................11.2研究背景及意义..............................................11.3研究方法....................................................12文献综述..........................................................22.1国外研究现状................................................22.2国内研究现状................................................23数据来源与处理....................................................33.1数据获取....................................................33.2技术路线....................................................33.3遥感影像水域信息提取........................................43.3.1水体信息提取方法.......................................43.3.2水体信息提取...........................................44结果与分析........................................................64.1曲靖市主要水源地29年水域面积时空变化分析...................64.1.1曲靖市主要水源地29年水域面积时间变化分析..............64.1.2曲靖市主要水源地29年水域面积空间变化分析..............74.2曲靖市主要水源地29年水域面积变化驱动力分析.................84.2.1自然因素...............................................84.2.2人为因素...............................................95结论.............................................................10参考文献...........................................................11致谢...............................................................121引言1.1研究区概况曲靖市位于云南省东部，地处珠江源头，属长江、珠江两大水系分水岭地带，为云南、广西、贵州三省交界处，自古以来为内地入滇之重要窗口，该区域介于103°03′E～104°50′E、24°19′N～27°03′N之间。区域内山岭河谷相间分布，地质构造复杂，地层发育较为齐...
