摘要
对闽北山地坡位对湿地松生长和养分利用效率的影响进行了研究,结果表明:坡位对湿地松幼林的生长有显著影响,中坡和下坡湿地松的树高、胸径和单株材积显著大于上坡;不同坡位上湿地松幼林的林分生物量为下坡(9 522kg hm^(-2))>中坡(7 137kg hm^(-2))>上坡(6 266kg hm^(-2));不同坡位上湿地松对养分的利用效率不同,其中中坡对氮、磷的利用效率显著高于上坡和下坡,下坡对钾、钙、镁、铁的利用效率高于上坡和中坡。
The effects of slope position on growth nutrient-use-efficiency of Pinus elliottii in northern Fujian Province were studied.Result shows that the slope position have a significant effect on growth of Pinus elliottii young forest;tree height,DBH individual volume（9 522 kg hm^-2） 〉middle slope（7 137 kg hm^-2）〉 uphill（6 266 kg hm^-2）.The nutrient-use-efficiency of Pinus elliottii at different slope positions is different.The nutrient-use-efficiency of Pinus elliottii on nitrogen and phosphorus at middle slope is significantly higher than that at upslope and downslope.The nutrient-use-efficiency of Pinus elliottii on potassium,calcium,magnesium iron at downslope is higher than that at upslope and middle slope.
出处
《防护林科技》
2017年第5期6-9,共4页
Protection Forest Science and Technology
基金
福建省林业科学研究项目(闽林科[2010]4号)
国家林业局南方山地用材林培育重点试验室
福建省森林培育与林产品加工利用重点试验室资助
关键词
闽北山地
湿地松
养分利用效率
mountains of northern Fujian Province
Pinus elliottii
the nutrient-use-efficiency
