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作 者:韩辉[1] 张柏习[1] 孙海红[1] 刘晓峰 于致龙
机构地区:[1]辽宁省固沙造林研究所,辽宁阜新123000 [2]阜新市林业局,辽宁阜新123000 [3]辽宁省青山保护局,辽宁沈阳110036
出 处:《防护林科技》2015年第5期20-22,共3页Protection Forest Science and Technology
基 金:林业公益性行业科研专项经费项目(201004063)
摘 要:以章古台22年生1 420株·hm-2樟子松林一次性间伐成密度为404株·hm-2和810株·hm-2并采取封育措施的2种林分为调查对象,调查单株生物量、生长量及林下植被。结果表明:404株·hm-2与810株·hm-2相比,11a后樟子松单株生物量干质量前者为后者的1.64倍,根系粗壮程度、草本盖度前者高于后者;14a后胸径生长量前者为后者的1.11倍;有无垂直主根取决于土壤的质地;810株·hm-2林分在林内出现衰弱死亡林木以后才侵入灌木。Taking two kinds of stands (404 trees ?hm-2 and 810 trees ?hm-2 )which were thinned by 22-year-old stand in Zhanggutai Area (1 420 trees ?hm-2 )as survey objects,the volume ,growth &understory vegetation of in-dividual plant were investigated.Result shows that 404 trees ?hm-2 compared to 810 trees ?hm-2 ,from the aspect of the dry mass of volume for the individual plant after 11 years,the former is 1.64 times than that of the latter;from the aspect of the degree of sturdy and herbaceous coverage for radication,the former is higher than that of the lat-ter;from the aspect of the DBH growth 14 years later,the former is 1.11 times than that of the latter,with or without the vertical taproot depending on the soil texture;shrub would invade the stands (810 trees ?hm-2 )which appeared death or weak trees.
分 类 号:S791.253[农业科学—林木遗传育种]
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