Effects of Chinese fir plantations with different densities on understory vegetation and soil microbial community structure
Year: 2021
Type: article
Abstract: AimsThe aim of the present study was to investigate the responses of understory vegetation to soil nutrients and bacterial communities. MethodsThis study investigated the understory vegetation biomasses and species composition as well as soil physical and chemical properties in 17-year-old Chinese fir plantations with three densities (high-density (KH), medium-density (KM), and low-density (KL)) in Kaihua, Zhejiang.The changes of bacterial community structures were analyzed via 16S rDNA high-throughput sequencing techniques. Important findingsThe result showed that the total above-ground biomass of the understory vegetation ranged from 0.10 to 2.10 t•hm -2 and the dominant plant species varied in three Chinese fir plantations.The soil pH and available phosphorus content were significantly different between high-density and low-density forest stands.Correlation analysis showed that soil pH was positively correlated with the biomass of herbs, shrubs and the total of understory vegetation, while the content of soil organic matter was just positively related with the last two factors, and the available potassium content was only affected by the biomass of shrub.Based on the analysis of the soil microbial community, the Acidobacteria, Proteobacteria, Actinobacteria, and Chloroflexi were the dominant phyla in the three Chinese fir plantations.Redundancy analysis showed that soil pH, available nitrogen, available phosphorus and available potassium contents played a crucial role in regulating the soil bacterial community structures.Gp2, Gp1, Gp3 and Gp6 were the dominant subgroups of Acidobacteria, accounting for 51.32%-
Source: Chinese Journal of Plant Ecology
Authors: Kai DING, Yu-Ting ZHANG, Jun-Hong ZHANG, Xiong CHAI, Shi-Shui ZHOU, Zai-Kang TONG
Institution: Zhejiang A & F University
Language: English
Subfield: Soil Science
Domain: Life Sciences
SDG: Life on land
Open Access status: diamond
OpenAlex ID: W3160776327