生物生产力的_4P_概念_估算与其相互关系.pdf

2001, 25(4) 4 14419 Acta Phy toecologica Sini ca 4 P 方精云　柯金虎　唐志尧　陈安平 ( , , 100871) , , ( GP P ) (N P P ) ( N E P ) (N B P ) , 4P4P ; , 4P, (N B P ) , , IMPLICATIONS AND ESTIMATIONS OF FOUR TERRESTRIAL PRODUCTIVITY PARAMETERS FANG Jing-YunKE Jin-HuT ANG Zhi-Yao an CHEN An-Ping ( D ep ar tment of Urban and Env ironme nt al S cience, and L aboratory f or E arth S urf ace P roc esses of the M inist ry of E ducat ion, Pek i ng Univer si ty , Bei i ng 100871) AbstractBiological pro uctivity is the matter pro uction capacity of ifferent organism levels (in ivi ual, com- munity, ecosystem, region an biome) , an an in icator of system health that it reflects an controls matter cy- cles an energy flows of the system. Four parameters for measuring biological pro uctivity exist, gross primary ( ) , ( ) , ( ) pro uctivity GP P net primary pro uctivity N P P net ecosystem pro uctivity N E P an net biome pro uc- tivity ( N B P ) , an are jointly terme as 4Pin abbreviation. The metho s of estimation of these parameters are iscusse in relation to climate change an a relationship among them is establishe through the currency of the carbon cycle. Several terms erive from 4P are also re- efine in this context . Despite only making up a part , ( ) of gross photosynthate pro uction final ecosystem pro uction N B P is the capital for future organic matter re- pro uction an controls maintenance an evelopment of the ecosystem. Key wor sGross primary pro uctivity (GP P ) , Net primary pro uctivity ( N P P ) , Net ecosystem pro uctivity ( N E P ) , Net biome pro uctivity ( N B P ), Global change, Carbon cycle