Abstract: Based on the survey of Arabidopsis thaliana distribution in Northern Tianshan Mountains in Xinjiang, this paper studied the characteristics of species diversity in 13 A. thaliana plots (the communities within which A. thaliana survived), and the effects of environmental factors on the spatial patterns of the diversity. The results showed that the species diversity indices differed largely with the plots, being the highest in Yili region at Borohoro Mountain, followed by in Emin region at Taerbahatai Mountain. The diversity indices of 8 A. thaliana plots in mid-Tianshan Mountains were low and changed largely, and those in Aletai region at Altay Mountain were at medium level. As a whole, the species diversity patterns appeared evident spatial heterogeneity. The kind and amount of A. thaliana and its adjacent species in each plot were different, with the highest in mid-Tianshan Mountains. The species diversity patterns fitted well with precipitation, and the diversity indices generally increased with increasing precipitation. The DCCA ordination of diversity indices indicated that in addition to precipitation, the micro-environmental factors such as slope aspect, soil available potassium, and soil electrical conductivity were also the important factors affecting the species diversity patterns.

Key words: Wheat, Aluminum speciation, Acid phosphatase (AP), Protein