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采用通径系数分析和相关分析的方法，随着植物的生长期的推移，分析了生长在松嫩盐碱草地上的星星草种群地上生物量变化和土壤生态因子变化之间的关系。星星草种群包括自然繁育的和人工繁殖１年、２年和３年的。结果表明，二者之间无明显的因果关系。
With the method of path coefficient analysis and correlation analysis, the relationship between the aboveground biomass and the change of soil ecological factors in the population of P. sibirica grown in Songnen-Saline-alkali grasslands was analyzed with the growth of plants. Spartina grass populations include both naturally-bred and artificially propagated plants for 1 year, 2 years and 3 years. The results show that there is no obvious causal relationship between the two.