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对１５年生木麻黄人工林营养元素的动态特性进行了分析，结果表明：（１）随着叶龄增大，树叶中易移动的氮、磷、钾、镁等元素含量递减，难移动的钙元素含量递增；（２）随生长季的推移，各种元素在１年生叶中的含量，以及难移动元素在各年生叶中的含量均不断增加。在２年生和多年生叶中，易移动的元素含量从生长初期至生长盛期逐渐下降，至生长后期有所回升；（３）叶部养分含量随立木生长级和树冠部位的不同而异；（４）各器官养分含量顺序为叶＞枝＞果＞皮＞根＞干。
The dynamic characteristics of 15-year-old Casuarina equisetifolia plantation were analyzed. The results showed that: (1) With the increase of leaf age, the content of easily removable nitrogen, phosphorus, potassium, magnesium and other elements in leaves decreased, (2) With the growth seasons, the content of various elements in the leaf of 1 year and the content of the hard moving element in the leaf of every year increased continuously. In 2-year-old and many-year-old leaves, the content of easily-moving elements decreased gradually from the early growth stage to the peak growth stage and then rose to the late growth stage. (3) The leaf nutrient content varied with stand growth level and canopy position 4) The order of nutrient content of organs was leaf> branch> fruit> husk> root> stem.