三种药材林生态系统营养元素循环的研究  

STUDY ON THE NUTRIENT ELEMENT CYCLE IN THREE MEDICINE PLANTATION ECOSYSTEMS

作　　者：刘煊章[1] 康文星[1] 

机构地区：[1]中南林学院

出　　处：《林业科学》1994年第5期399-404,共6页Scientia Silvae Sinicae

摘　　要：对１２年生杜仲、黄柏、凹叶厚朴人工林生态系统中１１种营养元素的积累、分布和生物循环的研究结果表明：各元素在林木各器官中的含量均有差异，植物系统和土壤系统各元素含量差异基本一致；三种药材林生态系统营养元素生物循环的平均速率以凹叶厚朴林＞杜仲林＞黄柏林为序；对营养元素利用效率的高低顺序为杜仲林＞黄柏林＞凹叶厚朴林。The accumulation,distribution and bioligical cycling of 11 nutrient elements in the three plantation ecosystems of 12-year-old Eucommia,Chinese Corktree,Twolobed Official Magnolia are studied.The results show that among the various organs of above ground,the nutrient elements contents are different,that the changing rules of the nutrient element contents in plant and soil system are identical,that the orders of the average rates of nutrient elements in the biollogical cycling of these three medicine plantations are,Twolobed Officinal Magnolia>Eucommia>Chinese Corktree,and that the utilization efficiency of the nutrient elements in stand systems is in order of Eucommia>Chinese Corktree>Twolobed Officinal Magnolia.

关 键 词：杜仲 黄柏 药材林 生物循环 

分 类 号：S727.340.4[农业科学—林木遗传育种]