辽西河滩地杨树立地分类的研究

Studies on the Site Classification of Poplar Plantations Along River Bands in Western Liaoning Province

在大量调查和测试的基础上,对辽西河滩地杨树立地分类进行了系统的研究。首先深入地分析了杨树生长与地下水位、有效土层厚度、土壤机械组成、土体构型、容重、有机质、电导率、CaCO_3含量和pH值等立地因子的关系,确定出地下水位、机械组成和有效土层厚度为主导立地因子,且对其进行了科学分级,提出了确定河滩地有效土层厚度的合理方法,以主导因子的分级组合为基础,综合考虑辽西河滩地具体情况,将其划分为20个立地类型。

Based on the complete survey of poplar growth and environments, the studies were conducted systematically on the site classification of poplar plantations along river banks in Western Liaoning Province. At first, the theory of quatification Ⅰ was used to study the relationship between soil properties and plplar growth. The results showed that the dorminant factors effecting poplar growth were underground water level. soil texture and soil depth, and the dorminant factors were cut into several levels scientifically. Then, the area studied was classified into 20 site types.