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盐地碱蓬是黄河三角洲重要的先锋植物,抗盐能力强,分布范围广,对维持该地区生态系统稳定和演替发挥着重要作用。通过野外取样测定,研究了潮间带和潮上带盐地碱蓬种群的形态及生物量分配特征。在个体大小上,潮间带盐地碱蓬在株高和地径上显著低于潮上带盐地碱蓬;潮上带盐地碱蓬密集分布的株高高于散生分布,而生物量低于散生分布。在生物量分配特征上,潮间带盐地碱蓬Ⅰ以发展花、叶为主,潮上带盐地碱蓬Ⅱ的密集分布以优先发展茎为主,潮上带盐地碱蓬Ⅲ的散生分布以发展枝为主,属于种群发展的稳定阶段。因此,盐地碱蓬通过形态特征及生物量分配特征的调节,以适应潮间带和潮上带的不同生境特征,从而达到种群维持和土壤改良的目的。
Suaeda salsa is an important pioneer plant in the Yellow River Delta. It has strong salt-resistant ability and a wide distribution. It plays an important role in maintaining the stability and succession of ecosystems in the area. Through field sampling, the morphological and biomass allocation characteristics of Suaeda salsa population in intertidal zone and tidal zone were studied. On the individual size, the height and diameter of Suaeda salsa in intertidal zone were significantly lower than those in Suaeda salsa; the plant height of the intensive distribution of Suaeda salsa in the tidal zone was higher than that of the wild type, The amount is below the nadir distribution. In the characteristics of biomass allocation, Suaeda salsa I was dominated by the development of flowers and leaves in the intertidal zone. The intensive distribution of Suaeda salsa Ⅱ in the tidal zone was dominated by the dominant developmental stems. Suaeda salsa Ⅲ The distribution of nodules is dominated by developmental branches and belongs to the stable stage of population development. Therefore, Suaeda salsa can adapt to the different habitat characteristics of the intertidal zone and the tidal zone through the adjustment of morphological characteristics and biomass allocation characteristics so as to achieve the purpose of population maintenance and soil improvement.