白洋淀湖泊表层花粉通量特征及来源途径分析  

Characteristics of Pollen Influx and Pollen Source Dynamics of Baiyang Lake

作　　者：田芳[1] 许清海[1,2] 李月从[1] 曹现勇[1] 

机构地区：[1]河北师范大学资源与环境科学学院河北省环境演变与生态建设实验室,河北石家庄050016 [2]兰州大学西部环境教育部重点实验室,甘肃兰州730000

出　　处：《地理科学》2010年第6期955-961,共7页Scientia Geographica Sinica

基　　金：国家自然科学基金重点项目(编号:40730103);国家自然科学基金项目(编号:40571166;40672107);河北省博士基金项目(编号:06547006-3);河北省高校重点学科建设项目联合资助

摘　　要：白洋淀湖面捕捉器样品、湖底捕捉器样品和湖泊表层沉积物样品花粉组合及花粉通量均能较好地反映地方和区域植被特征。湖面捕捉器花粉通量明显低于湖底捕捉器,通过对比湖面、湖底捕捉器花粉通量,发现白洋淀湖泊有91%以上的花粉由地表径流携带而来。判别分析结果表明:湖水和空气在花粉传播和沉积过程中均存在对花粉的搅匀和混合作用,样品类型间花粉组合差异大于样点间差异,花粉来源途径的不同对湖泊花粉组合影响明显。Pollen assemblages and pollen influx of trap samples upon water and under water and surface sediment samples from Baiyang Lake reflect regional and local vegetation well.Pollen influx of trap samples upon water are lower than those under water obviously,indicating that there is about 91% of total pollen being transported through water in the lake.Discriminant analysis shows that there was preferable mixing effect when pollen was transported and sedimented through air and water,and the difference of pollen assemblage among different sample types is more obvious than among different sample sites.

关 键 词：白洋淀 湖泊花粉 花粉通量 花粉来源途径 

分 类 号：Q944.571[生物学—植物学]