Effects of Mixed Decomposition of var. and Litter on Microbial Diversity.

var. is widely planted in China as a windbreak and sand fixation tree. To improve the current situation of large-scale declines of forested areas planted as var. monocultures, we investigated the biological and microbial effects of stand establishment using mixed tree species. The interactions during the mixed decomposition of the litter and leaves of different tree species are an important indicator in determining the relationships among species. In this experiment, a method of simulating the mixed decomposition of var. and litter under var. forest was used to determine the total C, total N, and total P contents in the leaf litter, and the microbial structures were determined by using Illumina MiSeq high-throughput sequencing. It was found that with samples with different proportions of var. and litters, the decomposition rate of var. × litter was significantly higher than that of the pure var. forest, and the microbial community and composition diversity of litter in a pure var. forest could be significantly improved. The possibility of using as a mixed tree species to address the declines of pure var. forest was verified to provide guidance for pure var. forests by introducing tree species with coordinated interspecific relationships and creating a mixed forest.