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本文着重研究了广西北海市海岸砂土与潮滩盐土上的木麻黄、红树林（白骨壤、秋茄、桐花）的化学成分，从而进一步揭示了这类土壤与林木中的常量、微量元素及其供求之间的关系，为该处沿海防护林营造和树种选择提供科学依据。
In this paper, the chemical constituents of Casuarina equisetifolia and mangroves (Avicennia marina, Kandelia candel and Aegiceras corniculatum) on sandy soils and tidal flat soils in Beihai, Guangxi were studied emphatically, which further revealed the relationships among the contents of trace elements and trace elements The relationship between supply and demand provides a scientific basis for the establishment of coastal shelterbelt and tree species selection.