Climate Change Data Portal
DOI | 10.1002/ldr.3626 |
Fencing decreases microbial diversity but increases abundance in grassland soils on the Tibetan Plateau | |
Fan, Dandan; Kong, Weidong; Wang, Fei; Yue, Linyan; Li, Xiangzhen | |
通讯作者 | Kong, WD (通讯作者) |
发表日期 | 2020 |
ISSN | 1085-3278 |
EISSN | 1099-145X |
起始页码 | 2577 |
结束页码 | 2590 |
卷号 | 31期号:17 |
英文摘要 | Fencing usually increases soil organic carbon and nutrients and eventually enhances soil microbial diversity; however with different or even conflicting results, the mechanisms underlying the diversity reduction remain unclear. Aiming to reveal the mechanism of diversity reduction, we explored the soil microbial diversity and community structure in fenced areas (5-and 10-years enclosure) and grazing during a growing season in arid and semiarid steppe, using Illumina sequencing of 16S and 18S rRNA genes. The results revealed that fencing and season both substantially increased soil total organic carbon (TOC), while the enhancing TOC substantially reduced soil pH. Fencing significantly increased soil bacterial and eukaryotic abundance due to the enhancing TOC, which was indicated by positive correlation (p < .05). Contrastingly, fencing significantly decreased soil bacterial and eukaryotic diversity. Our results further revealed that fencing- and season-driven change in soil water content and soil pH played key roles in reducing the bacterial and eukaryotic diversity, respectively. Distance-based linear model demonstrated that fencing dominantly drove the soil bacterial and eukaryotic community variations by explaining 15.64 and 24.88%, respectively, and redundancy analysis showed that the fencing effect was dependent on growing months. Bacteria were dominated by Cyanobacteria and Proteobacteria, and eukaryotes were dominated by Streptophyta, Ascomycota and Basidiomycota. Cyanobacteria relative abundance remained stable from May to September in fencing but substantially increased in grazing. Our findings offer a new insight into the mechanism of the soil microbial diversity reduction, and reveal the season-dependency of fencing effect in arid and semiarid grasslands. |
关键词 | TERM GRAZING EXCLUSIONBACTERIAL COMMUNITY STRUCTURERNA GENE DATABASECARBON SEQUESTRATIONFUNGAL COMMUNITYINNER-MONGOLIACLIMATE-CHANGEPLANT DIVERSITYDESERT STEPPEPH |
英文关键词 | arid and semiarid; fencing; grassland; soil microbial diversity; Tibetan Plateau |
语种 | 英语 |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
WOS类目 | Environmental Sciences ; Soil Science |
WOS记录号 | WOS:000536480700001 |
来源期刊 | LAND DEGRADATION & DEVELOPMENT |
来源机构 | 中国科学院青藏高原研究所 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/259864 |
推荐引用方式 GB/T 7714 | Fan, Dandan,Kong, Weidong,Wang, Fei,et al. Fencing decreases microbial diversity but increases abundance in grassland soils on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2020,31(17). |
APA | Fan, Dandan,Kong, Weidong,Wang, Fei,Yue, Linyan,&Li, Xiangzhen.(2020).Fencing decreases microbial diversity but increases abundance in grassland soils on the Tibetan Plateau.LAND DEGRADATION & DEVELOPMENT,31(17). |
MLA | Fan, Dandan,et al."Fencing decreases microbial diversity but increases abundance in grassland soils on the Tibetan Plateau".LAND DEGRADATION & DEVELOPMENT 31.17(2020). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。