物种丰富度的经度梯度格局在经度方向上教学课件

第八章续生物多样性的分布格局与基本理论Valadononry.chAsposeslidesforNET4odientPEvaluationonly.CreatedwithAsposeSlidesforNET4.0dientProfilo71Copyright2019-2019AsposePtyL生物多样性高的地方在哪里?为什么?影响生物多样性的因素是那些?Valadononry.chAsposeslidesforNET4odientPEvaluationonly.CreatedwithAsposeSlidesforNET4.0dientProfilo71Copyright2019-2019AsposePtyL第四节生物多样性的分布格局在哪些地方生物多样性比较高?在哪些地区生物多样性比较贫乏?Valadononry.chAsposeslidesforNET4odientPEvaluationonly.CreatedwithAsposeSlidesforNET4.0dientProfilo71Copyright2019-2019AsposePtyL物种多样性的分布格局主要表现在三维空间上:从南到北;纬度梯度上,物种多样性的变化趋势丛东到西:在经度梯度上,即降水梯度上的多样性变化趋势从低到高:海拔梯度上,物种多样性的变化趋势Valadononry.chAsposeslidesforNET4odientPEvaluationonly.CreatedwithAsposeSlidesforNET4.0dientProfilo71Copyright2019-2019AsposePtyL物种多样性的纬度格局从南到北(北半球),生物多样性有何变化趋势?或从低纬度(赤道地区)地区到高纬度(极地)地区,生物多样性有何变化趋势Valadononry.chAsposeslidesforNET4odientPEvaluationonly.CreatedwithAsposeSlidesforNET4.0dientProfilo71Copyright2019-2019AsposePtyL纬度格局1:蝙蝠属动物物种多样性的纬度格局FIG.3.Therelationshipbetweennumbersofspeciesofquadrupedalmammals(A)andbats(Bandlatitude.DashedandsolidlinesarethesameasinFig.2.Valadononry.chAsposeslidesforNET4odientPEvaluationonly.CreatedwithAsposeSlidesforNET4.0dientProfilo71Copyright2019-2019AsposePtyL纬度格局2:繁殖期鸟类多样性的纬度格局2.5,1.50.75-152.25-3LatitudFig.ILatitudinalgradientsinspccicsrichnessofbrecdinglandbirds(log,onumbcrofspccics)amongnineNewWorldregions,infivebodysizegroups(logog)Valadononry.chAsposeslidesforNET4odientPEvaluationonly.CreatedwithAsposeSlidesforNET4.0dientProfilo71Copyright2019-2019AsposePtyL纬度格局3:我国东部地区植物多样性的纬度格局0.092x+5.58R2=0.80,P(0.0011545纬度Latitude(°)Valadononry.chAsposeslidesforNET4odientPEvaluationonly.CreatedwithAsposeSlidesforNET4.0dientProfilo71Copyright2019-2019AsposePtyL纬度格局4:物种多样性的全球纬度格局1,4001,2001.000800600400200B80LatitudeValadononry.chAsposeslidesforNET4odientPEvaluationonly.CreatedwithAsposeSlidesforNET4.0dientProfilo71Copyright2019-2019AsposePtyL纬度格局总结从南到北,生物多样性呈递减格局。例证:热带地区占有7%的陆地面积,却拥有全球生物多样性的50%以上。因此,生物多样性保护的热点地区大都在热带地区Evaluadononly.chAsposeslidesfor