【摘要】 对福建惠安15年生木麻黄林微量元素生物循环定位观测结果表明：该生态系统的微量元素总积累量为23．022kg／hm，养分元素的年存留量为2．71kg／hm，养分的年归还量为2．986kg／hm，养分吸收量为5．057kg／hm．该林分微量元素循环的平均速率达59．0％，各元素的生物循环速率大小顺序依次为铁＞锰＞锌＞硼＞铝＞铜．更多还原

【Abstract】 Based on located observation and chemical analysis in the Casuarina equisetifolia plantation of 15 age, the biological cycling of microelements in the ecosystem was studied. The results showed that the total amount of microelements accumulated in the stand was 23. 022kg/hm2, the annual retion were respectively 2. 071kg/hm2 and 2. 986kg/hm2, and the annual absorption was 5. 057kg/hm2. The return absorption ratio was 59. 0%, and the order of cycling ratio in the microelements was Fe>Mn>Zn>B>Mo>Cu.更多还原