海草生产力研究进展

Study advance on primary productivity of sea-grass

海草是生活在热带和温带海域浅水中的单子叶植物,具有较高的生产力,在全球的C、N、P循环中发挥着重要作用。作者对国内外海草生产力的研究进展和研究方法进行了综述,并分析了海草生产力的影响因素。海草地上部分生产力主要采用改进的Zieman标记法(如针孔法),地下部分采用末端标记法。影响海草生产力的因素包括海草种类、光照、无机碳源、温度、盐度、污染物及底质类型等。最后,作者指出了海草生产力研究存在的问题。

The sea-grass is the monocotyledon and lives in the neritic region of the tropical and temperate zones. The sea-grasses have high primary production, and play an important role in the cycle of carbon, nitrogen and phosphorus in the global scale. In this paper, the research advances and methods on the sea-grass＇primary productivity at home and abroad reviewed. The influence factors of the sea-grass＇primary productivity are discussed. The Modified Zieman~ methods, for example, hole-punch method,is the main meth- od for above-ground primary productivity of the sea-grass, and marking rhizome terminals method is for under-ground. The variations of the seagrass primary productivity are determined by the various factors such as different seagrass species, irradiance level, inorganic carbon supply, water temperature, salinity, pollutants, sediment and so on. The deficiencies of the seagrass primary productivity study are also prospected.