摘要
基于南亚热带米老排人工林落种后皆伐迹地的天然更新调查资料,对其皆伐迹地天然更新幼树的树种、起源、数量、空间格局、分布频度和树高结构进行研究,结果表明:(1)皆伐迹地上绝大多数的天然更新树种为米老排树种;(2)在0~10 m空间尺度内,米老排种子更新幼树的分布为聚集分布(P<0.01);(3)米老排种子更新幼树的数量和频度,可达到森林天然更新的良级标准,亦符合采伐迹地人工更新成林的验收标准;(4)种子天然更新幼树树高的分布近似正偏山状的weibull密度函数;(5)在米老排人工林皆伐作业后1.5年左右,对采伐迹地天然更新幼树进行间苗定株较为适宜;(6)对米老排人工林适时适地的采用小面积皆伐、非炼山方式清理迹地剩余物、保护和利用迹地天然更新幼树的方式,可有效实现采伐迹地的森林更新。
Based on surveyed data of natural regeneration on clearcut land of Mytilaria laosensis plantation,while which seeds were matured and fell,in the south subtropical of china.Tree species,origin,quantity,spatial distribution pattern,distribution frequency and height structure of the natural regeneration on the clearcut land,which were analyzed,and results showed that：（1）on the clearcut land,the most majority of tree species of natural regeneration is Mytilaria laosensis tree species;（2）bellow the scale of 10 m,natural regeneration seedling was aggregation distribution（P 〈 0.01）;（3）the quantity and frequency of seedling,which not only can reach the standard of a good level of the forest natural regeneration,but also meet the acceptance criteria of artificial regeneration on the clearcut land;（4）the distribution density function of tree height class of natural regeneration with sapling seed,which is approximate to Weibull density function with partial mountain shape;（5）it is a good time to thinning the natural regeneration seedlings,in about 1.5 years after clear cutting of the plantation;（6）it can made effective natural regeneration on the small area clear-cutting land of Mytilaria laosensis plantation,while seed maturity and falling,by using clear-cutting,no burning and manually disposing of forest harvesting slash on clearcut overland,protecting and utilizing natural regeneration of sapling on the clearcut land.
作者
唐继新
贾宏炎
曾冀
李忠国
庞圣江
郝建
赵总
TANG Jixin;JIA Hongyan;ZENG Ji;LI Zhongguo;PANG Shengjiang;HAO Jian;ZHAO Zong(Experimental Center of Tropical Forestry, CAF, Pingxiang 532600, Guangxi, China;Research Institute of Forest Resources Information Techniques, CAF, Beijing 100091, China)
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2018年第3期59-63,共5页
Journal of Central South University of Forestry & Technology
基金
广西自然科学基金项目(2016GXNSFBA380087)
中国林业科学研究院热带林业实验中心主任基金项目(RL2012-01)
关键词
米老排人工林
皆伐迹地
天然更新
空间分布格局
树高结构
Mytilaria laosensis Plantation
clearcut land
natural regeneration
spatial distribution pattern
tree height structure
