摘要
研究了盐度(0、0.02、0.04和0.08mol.L-1)和黑松母树大小对山东半岛北部海防林的主要造林树种黑松种子萌发和幼苗早期生长的影响。结果表明:盐度对黑松种子的发芽率有显著影响,随着NaCl浓度的升高,种子萌发率逐渐下降;盐分抑制黑松幼苗的早期生长,随着盐浓度升高,黑松幼苗的根长、芽长及根干质量均显著降低;母树大小在总体上对种子萌发率没有影响,但显著影响黑松幼苗的根长、芽长和芽干质量;盐度和母树大小的相互作用显著影响黑松幼苗的根长和芽长,而对黑松种子萌发率、幼苗根干质量和芽干质量的影响不显著。
Pinus thunbergii is the main forestation tree species of coastal protection forests in northern Shandong Peninsula of China. Its seed germination and seedling early growth were studied under the conditions of different water salinity （0, 0. 02, 0. 04, and 0. 08 mol · L^-1 ） and mother tree sizes. With increasing sea water salinity, the seed germination rate, root- and plumule length, and the dry weights of root and plumule decreased significantly. Mother tree size had little effects on the seed germination rate, but affected the root- and plumule length and the plumule dry weight significantly. The interaction of sea water salinity and mother tree size affected the root- and plumule length significantly, but less affected the germination rate and the dry weights of root and plumule.
出处
《生态学杂志》
CAS
CSCD
北大核心
2009年第11期2171-2176,共6页
Chinese Journal of Ecology
基金
山东省科技攻关计划项目(2007GG2QT06019)
烟台市科学技术发展计划项目(2008155)
中国科学院烟台海岸带可持续发展研究所前沿领域资助项目(A3J0708BX)
关键词
海防林
黑松
盐度
母树大小
种子萌发
幼苗早期生长
coastal protection forest
Pinus thunbergii
salinity
mother tree size
seed germination
seedling early growth.
