摘要
在广东南澳岛四个森林群落内移植了大叶相思(Acaciaauriculaeformis)、尾叶桉(Eucalyptusurophylla)和荷木(Schimasuperba)三种树苗,通过测定群落内林窗和非林窗生境中的叶面积指数、透光率和幼苗的生长高度,观察林窗环境对移植树苗生长的影响。结果表明:林窗的叶面积指数比非林窗的小;林窗的透光率大于非林窗;各群落的叶面积指数和透光率有季节性的变化,变化幅度各不同。三种幼苗在林窗内比非林窗的乔木层下生长快;大叶相思和尾叶桉幼苗在林窗内的高度增长量显著大于非林窗下的,荷木虽也存在差异,但不如前两者显著。这些结果反映了不同生态特性的树种对林窗的反应不同。
Seedlings of Acacia auriculaeformis, Eucalyptus urophylla, and Schima superba were tr ansplanted in canopy gaps and under secondary broadleaved forest, Pinus m assoniana forest, Acacia auriculaeformis forest, a nd Eucalyptus robusta forest on Nan'ao Island, Guangdong Provin ce. Leaf area index (LAI), transmittance, and seedling height were measured. Res ults indicated that LAI was greater under forests than in gaps, and the transmit tance was much higher in gaps. Both LAI and transmittance changed with the seaso ns. Seedlings of the three species grew faster in gaps than under forests. Seedl ing height of Acacia and Eucalyptus in gaps increased more obvio usly than that of Schima, showing ecological response of species to canopy gap condition.
出处
《热带亚热带植物学报》
CAS
CSCD
北大核心
2002年第4期340-347,共8页
Journal of Tropical and Subtropical Botany
基金
国家自然科学基金重大项目(39899370)
广东省自然科学基金项目和团队项目(970656
003031)
中国科学院华南植物研究所所长青年基金资助