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Position: Home > Articles > THE SOIL CCLOTGICAL INDEXES AND CLASSIFICATION OF SALINE SRASSLAND SOIL IN HIXI CORRIDOR Pratacultural Science 1991 (3) 22-25

河西走廊盐渍化草地土壤生态指标的选择与分类

作  者:
闫顺国
单  位:
甘肃草原生态研究所
关键词:
盐渍化草地;生态指标;主分量分析;判别分析
摘  要:
本文采用主分量分析及判别分析的方法对河西走廊盐渍化草地土壤生态环境进行了研究,结果表明,前两个主分量反映了土壤盐分,有机质,结构及有害离子数量,可作为土壤生态指标;河西走廊盐渍化草地土壤可分为五类,文中给出了各类的环境特点,代表植物及分类指标,可作为进一步研究的基础。
译  名:
THE SOIL CCLOTGICAL INDEXES AND CLASSIFICATION OF SALINE SRASSLAND SOIL IN HIXI CORRIDOR
作  者:
Yan Shunguo (Gansu Grassland Ecological Research Institute,Lanzhou 730020)
关键词:
Saline grassland soil;; ecological index;; principal component analysis;; discriminant analysis
摘  要:
Principal component analysis (PCA) and Byers discriminant analysis (DA)wereused to atudy the soil characters of saline grassland in Hixi Xorridor. The results showed that the differences in the total soluble salt, structure, organicmatter and poisonous irons in the soils can beidentified with the sbove methods. These suggested that PCA and DA could be used as the soil ecological indexex (SEI). The saline grassland soil was classified into 5 groups according to theirSEI. The environmental features and indicator plants of each group were described.

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