VEGETATION CHANGES ALONG A PRECIPITATION GRADIENT IN CENTRAL ARGENTINA

被引：63

作者：

CABIDO, M

GONZALEZ, C

ACOSTA, A

DIAZ, S

机构：

[1] Centro de Ecología y Recursos Naturales Renovables, Universidad Nacional de Córdoba, Córdoba, 5000

来源：

VEGETATIO | 1993年 / 109卷 / 01期

关键词：

CHACO VEGETATION; HUMIDITY GRADIENT; MONTE VEGETATION; PHYSIOGNOMIC PLANT CHARACTERS; VEGETATION STRUCTURE;

D O I：

10.1007/BF00149541

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Changes in vegetation along a precipitation gradient in Central Argentina were studied. Floristic samples were taken along an east-west transect of about 300 km. Correlation analysis between precipitation and ordination axes was used to provide an environmental interpretation of vegetation variability. Floristic analysis produced an ordination of plant communities from evergreen forests (precipitation > 500 mm) to desert shrublands and therophyte communities (precipitation < 200 mm). Results showed a trend of floristic and structural impoverishment towards the west. There is a replacement of species along the transect and a shift in dominant growth forms. The first ordination axis is significantly, negatively correlated with annual precipitation.

引用

页码：5 / 14

页数：10

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