Chin J Plant Ecol ›› 2008, Vol. 32 ›› Issue (6): 1373-1377.DOI: 10.3773/j.issn.1005-264x.2008.06.018

• Original article • Previous Articles     Next Articles

SPATIO-TEMPORAL DISTRIBUTION OF ARBUSCULAR MYCORRHIZAL FUNGI FROM ARTEMISIA ORDOSICAIN YULIN CITY OF SHAANXI PROVINCE, CHINA

HE Xue-Li(), HOU Xiao-Fei   

  1. Department of Life Science, Hebei University, Baoding, Hebei 071002, China
  • Received:2007-06-04 Accepted:2007-09-10 Online:2007-06-04 Published:2008-11-30
  • Contact: HE Xue-Li

Abstract:

Aims Artemisia ordosica is a forage grass used for soil stabilization in arid regions, including our study area on the South Edge of Maowusu Sandy in Yulin, Shaanxi, China. Our objective was to determine the natural ecological distribution of AM fungi in relationship to soil factors in the rhizosphere of A. ordosica in order to provide information for the recovery of desert vegetation.

Methods We collected soil samples from the rhizosphere of Artemisia ordosica in four replicates, divided them into depths of 0-10, 10-20, 20-30, 30-40 and 40-50 cm, and measured colonization and ecological distribution of AM fungi. We analyzed AM fungi of A. ordosica rhizosphere soil using one-way ANVOA and correlated to soil factors.

Important findings Spore density and arbuscular colonization of AM fungi decreased with sampling time. Vesicular colonization decreased initially and later increased to its highest value in October. Hyphal colonization increased initially and later decreased; its highest value was in August. The highest colonization and spore density of AM fungi was at 0-10 cm and 20-30 cm depths in May. Soil factors were significantly correlated with the spatial and temporal distribution of AM fungi. Soil available N, available P and organic matter were significantly positively correlated with spore density, and soil available K was significantly correlated with hyphal colonization and total colonization.

Key words: AM fungi, spatio-temporal distribution, Artemisia ordosica, Yulin