Premium
Effect of strip harvesting on bacterial diversity of forest soils in the Daxing'an Mountains
Author(s) -
Jia Dan,
Dong Xibin,
Li Yunhong
Publication year - 2020
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.1002/saj2.20046
Subject(s) - acidobacteria , environmental science , soil water , proteobacteria , zoology , agronomy , biology , soil science , bacteria , genetics , 16s ribosomal rna
Strip harvesting can improve the management of low‐quality forests, but the practice affects forest soil properties and microbial communities. The effects of different strip widths on the physicochemical properties of the forest soil and the bacterial diversity were determined. The design consisted of four strips with the same length and different widths of 6 m (ZM6), 10 m (ZM10), 14 m (ZM14), and 18 m (ZM18) and an unharvested strip (ZM0) as the control. Illumina high‐throughput sequencing was used to determine the sequence information of the soil microbial community structure in the five strips. The dominant bacterial phyla were Proteobacteria and Acidobacteria, while the dominant bacterial genera were AD101, Rhodoplanes , and Bradyrhizobium . The strip width exhibited a highly significant positive correlation with Proteobacteria and Acidobacteria ( p < .001). The order of plots based on soil bacterial diversity (Chao1 and the abundance‐based coverage estimator [ACE]) was ZM18 > ZM10 > ZM6 > ZM14 > ZM0, and there was a highly significant positive correlation between the indices and the strip width ( p < .001). Strip harvesting significantly affected soil pH, total nitrogen (TN), total potassium (TK), soil respiration (SR), soil temperature (ST), and soil moisture (SM) ( p < .05). The results of a principal component analysis (PCA) showed that strip harvesting explained 23% of the bacterial variation. The 10‐m‐wide strip exhibited the most desirable effects because it had relatively rich bacterial diversity and moderate soil fertility.