摘要
为了探明无瓣海桑(Sonneratia apetala Buch.-Ham.)人工林下乡土树种自然更新的机理及无瓣海桑对其影响,用野外样方调查法,对海南东寨港地区的14年生人工无瓣海桑林试验样地进行了调查分析。结果表明:14年生人工无瓣海桑林处于自然更新的初期;种源距、滩面高度、林间距、林下呼吸根数目均与林下乡土树种的自然更新存在相关关系,灌木模型为:Y1=0.998X1+0.324X2+8.54X3-0.122X1X3-75.953;幼苗模型为:Y2=151.934-0.565X1-1.682X4;无瓣海桑呈林圈和林间带种植能够加快乡土树种自然更新的速度。
To investigate the mechanism of the natural regeneration of indigenous mangroves in Sonneratia apetala Buch.-Ham plantations and the effects of S.apetala. The method of survey plots was performed to analysis 14 years of S.apetala plantations in Dongzhai Harbor in November 2010. The results indicated that the community of S.apetala plantations is in the early stages of natural regeneration; there were correlation between provenance distance, elevation, forest spacing, the number of pneumatophores and natural regeneration of indigenous mangroves which were as followed： Shrubs：Y1=0.998X1＋0.324X2＋8.54X3-0.122X1X3-75.953;Seedlings：Y2=151.934-0.565X1-1.682X4; the natural regeneration was accelerated by the S.apetala forest planted with circulation and strips.
出处
《热带生物学报》
2011年第4期342-348,共7页
Journal of Tropical Biology
基金
"十一五"国家科技支撑计划专题(2009BADB2B0404)
中央级公益性科研院所基本科研业务费专项资金项目(6309)
关键词
无瓣海桑
乡土树种
自然更新
物种多样性
Sonneratia apetala Buch.-Ham
indigenous mangroves
natural regeneration
species diversity plantations
