摘要
杉木林林下植被的生长与发育，对林地地力的恢复具有重要意义．通过对定位试验地杉木人工林林下植被营养元素的分析，研究了杉木林间伐后林下植被营养元素含量与积累状况．结果表明；营养元素在植物不同器官中的含量是不同的；问伐区灌木层和草本层植物中大量元素和微量元素的积累量大于对照区，草本植物中营养元素积累的增长幅度不如灌木层植物大；间伐后林下死地被物中大多数营养元素含量和积累量均有所增加．
The growth and development of understory vegetation in a Chinese fir Plantation plays a great role in restoring the forest site quality. The content and accumulationof nutrient elements in the understory vegetation of a Chinese fir plot are analyzed in thispaper. The results show that element contents differ in different organs of a plant. In bothshrub and herb stratum, the accumulation of macro and micro-elements in the thinnedstand is larger than that in the unthinned stand, while the accumulation of nutrient elements in the shrub stratum is greater than in the herb stratum. The content and accumulation of most nutrient elements in the dead litter of the thinned stand are also bigger thanthose in the control stand.
出处
《中南林学院学报》
CSCD
1998年第2期1-5,共5页
Journal of Central South Forestry University
基金
林业部重点课题!"森林生态系统定位研究"
关键词
杉木人工林
林下植被
营养元素
养分动态
Chinese fir
understory vegetation
nutrient element
thinning
nutrient content
nutrient accumulation
