Research on the niche of major plant population of the barren hillsides in the arid valley of the upper reach of the Minjiang River

摘要

The niche breadths and niche overlaps of Selaginella pulvinata and of other several main species of the herbaceous layer were measured at the barren hillsides in the arid valley of the upper reach of the Minjiang River. The results indicate that Selaginella pulvinata can distribute in various communities and adapt the environment of this region. Because all of them can express the highest ability to combat the draught and explore resources, the competitions among them can be found obviously. It is very useful for us to the vegetation recovery of the barren hillsides in the arid valley of the upper reach of the Minjiang River that had been damaged seriously by the 8.0 earthquake at 2:28pm on May 12th in Wenchuan, Sichuan Province, China.