資源描述：
《古爾班通古特沙漠種子大小變異的適應(yīng)意義》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、withtheincreaseofrainfall.Withprecipitationincreasing,speciesrichnessofdifferentseedsizehasincreased,buttheadvantagewillreduceseed,plantnumberdecreased,thenumberofsmallseedplantsincreasedsignificantly.SointhefuturethedesertplantprotectionshouldbeintensifyforHaloxylonammodendron,Haloxylonpers
2、icum,Calligonummongolicumsuchlargeseedplants.Keywords:GurbantunggutDesert;seedsize;phylogeny;lifeform;plantheight;communica--tiontypes;spatialdistributionII目錄中文摘要..................................................................IAbstract.......................................................
3、..........II目錄...................................................................III前言......................................................................1第一章文獻綜述...........................................................21.1種子大小以及種子大小變異的概念..................................................
4、.............................................21.2系統(tǒng)發(fā)育對種子大小的影響...........................................................................................................21.3植物生活史與種子大小的影響..................................................41.3.1種子大小與植株高度的關(guān)系.......................................
5、.......41.3.2種子大小與植物生活型的關(guān)系...........................................................................................41.3.3種子大小與傳播方式、散布能力的關(guān)系...........................................................................61.3.4種子大小與物種相對分布頻度的關(guān)系.......................................................
6、........................71.3.5種子大小變異的空間格局...................................................................................................71.3.6種子大小與物種豐富度和多度的關(guān)系...............................................................................81.4干旱區(qū)荒漠植物群落種子大小研究現(xiàn)狀..............................
7、........................................................91.5古爾班通古特沙漠植被種子大小研究現(xiàn)狀................................................................................101.6本論文研究意義..............................................................................
