海草生物量和初级生产力研究进展

Review of seagrass biomass and primary production research

海草床是近岸重要的湿地生态系统,具有较高生物量和生产力。海草的生物量和生产力变化除了受到光照、无机碳源、营养盐、温度、盐度、水动力条件、铁限制和污染物等非生物因素制约外,还受到附生藻类和动物摄食等生物因素影响。非生物因素一般有最适合海草生长的范围,生物因素的影响具有两面性。海草生物量和生产力研究基本处于由定性向定量过渡阶段,准确便捷的方法、现场多因子围隔实验、更大时空尺度上的对比研究是今后研究的重点。

Seagrass beds are important coastal ecosystems characterized by high biomass and primary production. The variation of seagrass primary production and biomass are determined by abiotic factors such as irradiance level, inorganic carbon supply, nutrient availability, water temperature, salinity, water velocity, iron deficiency and pollutants. Herbivory and the interaction with epiphytes are the most important biotic factors affecting the biomass and production of seagrasses. In general, the abiotic factors display optimal ranges for seagrass growth while the biotic factors exist double faced effects on it. Further research will be focused on development of research methods and comparative analysis based on larger spatial and temporal scales.