生物多样性研究及其问题_岳天祥.pdf

21 3 V o l. 21, N o. 3 200 1 3 A CT A ECO LO G ICA SIN ICA M ar . , 2001 岳天祥 ( , , 100 101) : 3 , ( 1) : 70 , , 70 , ( 2) : ( 1872 ) , , , 70 , ( 3) : 90 , , , , , 27 , : Studies and questions of biological diversity - ( St ate K ey L abo rato ry of Res our ces and E nvi ro nm ental I nf ormat io n Sy s tem , I nst it ute of Geo - Y U E T ian Xiang gr ap hical Sc iences and N at ural R es our ces R ese ar ch, Chines e A cad emy of S ci ences , B ei ing , 100 10 1Chi na) Abstract: T hree qu estio ns on bio diver sity need t o be co ntinuou sly stu died . ( 1) T he r elat ion ship betw een biodiv ersit y and ecosystem stabilit y: bef or e 1970 s, eco lo gist s believed th at diver sity beget s stability since som e theor etical ecolo gist s cha lleng ed the conventional w isdo m th at st ability increa ses w ith sp ecies div ersi- 1970 , . ( 2) ty in ea rly s there h ave app ear ed tw o ca mps w ho h ave opposite op inio n s T he r elatio nship be- tw een biolog ical diver sity and land pr odu ctiv ity in term s of Dar w in ( 1872) , the bio diver sity o f communit ies - is cau sed by niche div ersif ica tio n of the co occur ring species and such diver sif ication w ill lead to gr eater community pr o du ctiv ity du e to mo re eff ectiv e resour ce ex plo itat ion , w hich h as been a pplied to agr icult ur al practices by m any co untr ies but in the early 1970s, som e ecolog ist s m ade an objectio n t o Dar w ins re- ( 3) : 1990 , sult s T he r elatio n betw een biolog ical div ersity and landscap e co