Ⅱ毕业论文论文题目（中文）干旱荒漠植物土壤水对降水的响应论文题目（外文）TheReactionOfSoilWaterInAridDesertPlantsAreaTowardsPrecipitation干旱荒漠植物土壤水对降水的响应摘要土壤水是地表水和地下水的转换枢纽，降水和土壤性质共同决定了土壤水的入渗特征，研究土壤水对降水的响应对研究荒漠区生态及水文过程有着重要意义。本文以黑河下游干旱荒漠区为背景，对年内降水及土壤水分数据的时空变化进行分析，结论如下：降水量越大，转化成土壤水的水量越大，能够影响到的土层深度越深，且土壤水分持续响应的时间越长；同一次降水事件中，土层深度越深，其持续响应时间越长；该地区小降水事件以活塞流形式入渗，>5mm（8.7mm）的降水可能以优先流形式入渗；以一年为周期，该地区夏末至冬初显著湿层位于20cm处，冬末至夏初时位于100cm处。关键词：土壤水，降水，响应特征，干旱荒漠THEREACTIONOFSOILWATERINARIDDESERTPLANTSAREATOWARDSPRECIPITATIONAbstractBeingtheswitchinghubofsurfacewaterandgroundwater,soilwaterhasgreatsignificanceonresearchofecologicalandhydrologicprocessesinariddesertarea,especicallyit’sreactionwhichdependsonrainfallandsoilpropertytowardsprecipitation.HeretakesthelowerrechesofHeiheRiverasbackgroundandcomesthefollowingresults:Thegreatertheprecipitationis,thegreateranddeeperconversionintosoilwater,soastheresponsivetime.Deepersoilmakesalongertimeinreactioninthesamepreicipitation.Waterinfiltratinginwayofpistonflowinlittleprecipitation,whilethatof8.7mmprecipitationcouldrunninginpreferentialflow.Takingoneyearascycle,thewetlayerstayin20cmfromsummertowinterand100cmfromwintertonextyearsummer.Keywords:soilwater,precipitation,reactioncharacteristics,ariddesert目录TOC\o"1-2"\h\z\uHYPERLINK\l"_Toc193610337"中文摘要=1\*ROMANIHYPERLINK\l"_Toc193610338"英文摘要=2\*ROMANIIHYPERLINK\l"_Toc193610339"第一章绪论PAGEREF_Toc193610339\h1HYPERLINK\l"_Toc193610340"1.1研究背景及意义PAGEREF_Toc193610340\h1HYPERLINK\l"_Toc193610341"1.2研究进展及现状11.3研究内容、数据来源及技术路线................................11.3.1研究内容...............................................11.3.2数据来源...............................................21.3.3技术路线...............................................3HYPERLINK\l"_Toc193610343"第二章研究区概况4HYPERLINK\l"_Toc193610344"2.1自然地理概况4HYPERLINK\l"_Toc193610345"2.2研究区基本情况4HYPERLINK\l"_Toc193610346"第三章数据处理5HYPERLINK\l"_Toc193610347"3.1降水事件选取5HYPERLINK\l"_Toc193610348"3.2不同