【摘要】 本文在实验条件下,用O₂法和¹⁴C法测定了桑沟湾主要大型底栖植物的光合作用,并根据现场资源调查结果,估算了桑沟湾大型底栖植物的生产力。结果表明:不同底栖植物的光合作用速率的变化范围为:1.53—6.8Amg·g^-1·h^-1（以碳计,O₂法）或0.29—1.93mg·g^-1·h^-1(以碳计,¹⁴C法);¹⁴C法测出的底栖植物的碳同化速率为O₂法测定值的19.0％—40.2％。桑沟湾大型底栖植物的平均年生产力为1060g·m·²·a·^-1（以碳计）,每年总碳生产量为9750t。桑沟湾大型底栖植物的生产力与世界其它地区比较,水平较高。更多还原

【Abstract】 The photosynthesis of dominant benthic macrophytes in Sanggou Bay was measured with O2 and 14C method under laboratory condition. According to in situ investigation of macrophytes resoures, the primary productivity of macrophytes in Sarggou Bay was estimated.Results indicate that the photosyn-thetic rate of different macrophytes ranges from 1.53 to 6.84 mg/g.h(carbon fixed, O2 method) or from 0.29 to 1.93mg/g.h(carbor fixed, 14C method). The carbon assimilatory rate of macrophytes measured by 14C method is 19.0%-40.2% of that measured by O2 method. The average primary productivity of macrophytes in Sanggou Bay is 1060g/ma and the annual carbon production is 9750 t. Compared with other region of the world, the primary productivity in Sanggou Bay ranks upper level.更多还原