辽西北地区防护林树种与环境关系研究

Relationship Between Protection Forest Species and Environment in Northwestern Liaoning Province

为了解决辽宁省西北部地区防护林造林的问题,对防护林树种与环境的关系进行研究,采用DCCA排序法分析乔木与环境因子的关系。结果表明:环境因子之间存在显著的相关性,坡位、坡向、海拔、地貌是影响防护林树种生长的主要因子。根据树种和样地的DCCA排序图,得出防护林适宜的生长环境。通过分析环境因子对物种分布格局的解释能力分析,环境因子解释了42.7%的植被格局。

In order to solve the problem of protection forest afforestation in northwestern Liaoning Province,the re- lationship between protection forest species and environment was studied. Relationship between tree and environ- ment was analyzed by adoptingDCCA ranking method - data were processed by using Canoco software. Result shows that the environmental factors have significant correlations;altitude, slope positions, landform, and exposure are the main factors influencing the growth of protection forest tree species. According to the species and sample DCCA se- quence diagram, suitable growth environment of protection forest species could be found. Through analyzing inetpre- tation capability of environment factor on distribution pattern of species,it can be seen that the environmental factor explained 42.7% of the vegetation pattern.