摘要
通过对原产地、引种地沙地樟子松林的天然更新情况调查,选取可能影响樟子松天然更新的气候因子,进行了逐步判别分析。逐步判别结果表明,影响沙地樟子松天然更新的主导气候因子是:年平均气温(X1),1月平均降水量(X6),1月平均蒸发量(X10),无霜期(X13)。并依据判别结果对阻碍樟子松天然更新的主导因子进行了深入分析,提出了两点人工促进沙地樟子松天然更新措施。
Stepwise distinguishing and analysis were conducted on selected meteorological elements that might influence the natural regeneration through investigation of the status of natural Pinus sylvestris var. mongolica stands on original places and sandy lands of introduced areas. The results indicated that: the dominant meteorological elements that influenced the natural regeneration of Pinus sylvestris var. mongolica on sandy lands were X1(annual average temperature), X6(monthly average rainfall), X13(frost free period). Accordingly, in-depth analysis of dominant elements that hindered the natural regeneration of Pinus sylvestris var. mongolica was carried out, two measures that promoted artificially natural regeneration of Pinus sylvestris var. mongolica on sandy land were put forward.
出处
《辽宁林业科技》
2002年第6期1-3,6,共4页
Liaoning Forestry Science and Technology
关键词
沙地樟子松
天然更新
气候因子
逐步判别分析
Pinus sylvestris var. mongolica on sandy lands, natural regeneration, meteorological elements, stepwise distinguishing analysis
