论文部分内容阅读
In order to understand the responses of bryophytes composition and diversity to patched clear-cut,BACI methodology were used to investigate site-to-site and year-to-year variability.We investigated 6 40×50m2 permanent plots and 3 of them were harvested afterwards.The results showed that 141 taxa of bryophytes were identified from the 6 plots; cover of bryophytes decreased greatly after harvest,while cover of litter increased greatly; almost all of the bryophytes were declined in frequency of occurrence; no significant difference were shown in the decreasing rate of morphological groups and life forms,but still liverworts was the most sensitive group to harvest; 10 of 16 liverworts,8 of 37 peurocarpous mosses and 8 of 44 acrocarpous mosses were completely disappeared; species richness and Shannon-Wiener’ index of biodiversity were decreased significantly post-harvest.