Spatial Distribution of Arbuscular Mycorrhiza and It’s Influencing Factors in the Rhizosphere of Tamarisk ramosissima at Different Saline Habitats of North Xinj iang
Soil environment had a significant influence on arbuscular mycorrhizal fungi characteristics of Tamarisk ramosissima.Spatial distribution of arbuscular mycorrhiza in the rhizoposphere of Tamarisk ramosissima and its relativity to soil fators were investigated in three different salinization plots of Zhun-dong,Chaiwopu lake and Beiwucha town in North Xinjiang.The results showed that Tamarixramosissima in the three samlping plots could form symbiotic relationship with AM fungi,but the spore density of Chai-wopu lake sampling plot was significantly higher than that of other two plots.Distribution of arbuscular mycorrhizal fungi significantly differed among three sites and soil depths.The maximum value of coloniza-tion,arbuscule abundance,spore density existed in the depth of 0-10 cm of soil,and decreased with soil depth increased.Correlation analysis showed that soil organic matter had a significant positive correlation with the colonization rate.Soil pH,conductivity and available K had a significant negative correlation with arbuscule abundance,spore density,colonization intensity,colonization,hypha abundance,vesicula abun-dance.Soil available P had a significant negative correlation with the hypha abundance,which also had a negative correlation with arbuscule abundance and vesicule abundance.Spore density had a significantly positive correlation with AM fungi different indexes;Soil salinization degrees and P were the main limita-tion of the AM fungi from the rhizospere of Tamarisk ramosissima in arid regions.
Tamarix ramosissimaAM fungisoil factorsspatial distribution
NETL
NSTL
万方数据
维普
