【摘要】 本文对不同程度盐碱生境条件下星星草的生物量，优势度及生理指标进行系统地分析研究。结果表明：星星草的生态分布幅度较窄，但对盐碱生境具有较强的适应能力，在pH值为9．80～10．7，电导率为0.60～0．94ms／cm的土壤都能正常生长。通过其体内积累脯氨酸和无机离子进行渗透调节，以适应盐碱生境条件的变化。更多还原

【Abstract】 In this paper, the biomas dominance and physiological index of Puccinellia tenuiflora in different saline-alkaline environments are analyzed. The results show that Puccinellia tenuiflora distributes in a narrow gradients. It can grow well if soil conductivity range is0 .60~0. 94ms/cm, and pH 9. 80 ~ 10. 7. The adaptatility shows as: accumulation of proline and absorption of inorganic ions could improve the regalation of osmsis.更多还原