古海洋生产力指标探究进展.pdfVIP

第 12 卷 第 2 期 ( ) Vol . 12 No . 2 地学前缘 中国地质大学 ,北京 ; 北京大学 2005 年 4 月 Eart h Science Frontier s ( China U niver sit y of Geo sciences ,Beij ing ; Peking U niver sit y) Ap r . 2005 古海洋生产力指标研究进展 1 , 2 1 2 黄永建 , 　王成善 , 　汪云亮 1 中国地质大学 地球科学与资源学院 ,北京 100083 2 成都理工大学 地球科学学院 , 四川 成都 6 10059 HU AN G Yo ngj ian 1 ,2 , 　WAN G Chengshan 1 , 　WAN G Yunliang 2 1 S chool of E art h S cience an d M i neral R es ou rces , Chi na Uni vers i ty of Geosciences , B eij i ng 100083 , Chi na 2 E art h S cience Col leg e , Cheng d u Uni vers ity of Technology , Cheng d u 6 10059 , Chi na HUANG Yongj ian , WANG Chengshan , WANG Yunliang Progress in the study of proxies of paleocean productivity Ea r t h Science F r ont ier s ,2005 , 12( 2) :163170 Abstract : It i s of import ance to obt ain p roxies reflecting t he fluct uation s of p rimary p ro ductivit y in p aleoceano grap hic st udies Biological sediment s , nut rient s , t race element s , i sotop es and p aleontolo gical dat a , commonly show some relation ship wit h t he marine p roduction . Therefore , t hey could be u sed to recon st ruct p aleocean p roductivit y . The accumulation rat es of biological sediment s , including or ganic carbon , bio genetic carbonat es and depo sition of siliceou s sediment s. These are oft en dominat ed by p aleocean p ro ductivit y , so t hat t hese sedi ment s can be u sed as t he p ro ductivit y p ro xies. Oceanic p roduction , on t he geological timescale , may be con t rolled by t he availabilit y of nut rient s in t he ocean . The nut rition recor ds could still give much information to t he p rolificac