摘要
利用一块天然集水区 ,研究了湿地松人工林内K、P、Ca、Mg、Zn、Cu、Fe、Mn等矿物质元素。 1998～ 1999年通过降雨输入、地表径流输出以及积累、归还和吸收等循环过程。湿地松人工林有较高的生产力 (生物生产量为 2 0 349t·hm-2 ·a-1、材积生长量为 9 40 8m3·hm-2 ·a-1) ,原因在于它对矿物质元素有较高的利用率。林分矿质元素支出大于收入 ,并且归还量少 ,林分矿质元素循环效率低。建议采用阔叶树混交等方法调控湿地松林 ,以提高林分生产力 。
The study results show that Pinus elliottii plantation possesses the relatively high productivity,because its utilization rate for mineral elements is relatively high;and the disbursement of stand mineral elements is larger than their income,so their cycle efficiency is low.Therefore we propose that the methods of the mixture with a broadleaved species,etc.should be adopted to regulate and control P.elliottii forest so as to enhance the stand productivity and set up the ecosystem with the virtuous cycle.
出处
《福建林业科技》
北大核心
2000年第4期35-37,共3页
Journal of Fujian Forestry Science and Technology
