Response of soil microbial community dynamics to Robinia pseudoacacia L. afforestation in the loess plateau: a chronosequence approach

Liu, Jinliang; Yang, Zhonglan; Dang, Peng; Zhu, Hailan; Gao, Yang; Ha, Vu Ngoc; Zhong, Zhao

doi:10.1007/s11104-017-3516-2

Cited by 86 publications

(67 citation statements)

References 47 publications

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“…Guo [28] found a higher abundance of Firmicutes and lower abundance of Proteobacteria and Actinobacteria in cropland than in the restoration site, which is in accordance with our result. However, the higher frequency of Firmicutes in the studied site was in sharp contrast to the relatively lower abundance reported in other studies [29][30][31]; this is mainly due to the high abundance of Bacillus. Firmicutes, typically Bacillus and its derived genera, are a group of aerobic endospore-forming bacteria abundant in soils [36].…”

Section: Bacterial Communities Along Agroforestry Chronosequencecontrasting

confidence: 99%

“…Diversified plant species and the resultant rhizosphere chemistry and litter quality could affect the soil microbial community [28]. Some previous studies in the same region found that microbial diversity increased with afforestation [29][30][31], and the microbial diversity associated with the aboveground vegetation. Zhang [32] observed that soil bacterial diversity decreased at the early stage of restoration on farmland along with the aboveground vegetation decrease.…”

Section: Bacterial Communities Along Agroforestry Chronosequencementioning

confidence: 99%

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Changes in the Soil Bacterial Community in a Chronosequence of Temperate Walnut-Based Intercropping Systems

Gao

Zheng

Wang

et al. 2019

Forests

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Agroforestry (tree-based intercropping) is regarded as a promising practice in sustainable agricultural management. However, the impacts of converting cropland to an agroforestry system on microbial communities remain poorly understood. In this study, we assessed the soil bacterial communities in conventional wheat monoculture systems and a chronosequence (5–14 years) walnut-wheat agroforestry system through the high-throughput sequencing of 16S rRNA genes to investigate the effect of agroforestry age on soil bacterial communities and the correlation between soil properties and bacterial communities in the agroecosystem. Our results demonstrate that establishing and developing walnut tree-based agroforestry increased soil bacterial diversity and changed bacterial community structure. Firmicutes, Proteobacteria, Actinobacteria and Acidobacteria were the dominant soil bacterial phyla and Bacillus was the dominant genus. Crop monoculture systems were characterized by the Bacillus (Firmicutes)-dominated microbial community. The relative abundance of Bacillus decreased with agroforestry age; however, subgroups of Proteobacteria and Actinobacteria increased. Of the selected soil physicochemical properties, soil pH and bulk density were significantly correlated with bacterial alpha diversity, and soil pH and organic carbon were the principal drivers in shaping the soil microbial structure as revealed by redundancy analysis (RDA).

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Section: Bacterial Communities Along Agroforestry Chronosequencecontrasting

confidence: 99%

Section: Bacterial Communities Along Agroforestry Chronosequencementioning

confidence: 99%

Changes in the Soil Bacterial Community in a Chronosequence of Temperate Walnut-Based Intercropping Systems

Gao

Zheng

Wang

et al. 2019

Forests

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“…When considered alongside the spatial variation, we found within each restored grassland habitat, it is perhaps not surprising temporal variation in edaphic variables was stronger. Generally, soil nutrient conditions improved and tended to stabilize at our study site with a longer restoration duration, a view supported by previous studies on the Loess Plateau (Liu et al, ; Zhang, ). For example, SOM and SWC had increasing trend from 5 to 30 restoration durations, and that TN, NH 4 + ‐N, AP, and AK all had higher values with a longer restoration duration, which all elucidated the improved soil quality.…”

Section: Discussionsupporting

confidence: 89%

“…Through vegetation restoration of the Loess Plateau, its croplands were converted into grasslands or shrubs via natural succession. Both soil conditions and vegetation coverage have been improved, along with soil microbial community succession fostered by greater ecological stability in restored lands compared with degraded lands on the Loess Plateau (Guo et al, ; Liu et al, ; Zhang, Liu, Xue, & Wang, ).…”

Section: Introductionmentioning

confidence: 99%

Temporal and spatial succession and dynamics of soil fungal communities in restored grassland on the Loess Plateau in China

et al. 2019

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Natural secondary succession of degraded soil has improved the ecological environment of the Loess Plateau, profoundly influencing the succession and dynamics of soil fungal communities restored grasslands in particular. This chronosequence and the varied topography of the Loess Plateau thus provide a unique opportunity to synchronously investigate the variation of soil quality and fungal communities as they develop over time and space. Here, we used high-throughput sequencing of the ITS rRNA gene region to analyze the fungal community at a local scale. Edaphic variables and fungal community characteristics were compared among three restoration durations (5, 20, and 30 years), two soil layers (topsoil and subsoil), and different topographic factors (slope positions and aspects). Edaphic variables displayed varying patterns with significant differences among restoration durations and soil layers, but no such topographic patterns were found. As succession proceeded, alpha and beta diversities of fungal communities changed as space changed; whereas, over time, the discrepancy in community composition between the two soil layers declined.Constructed co-occurrence networks of edaphic variables combined with fungal community composition and distribution patterns based on indicator and keystone species also varied among three durations. Fungal trophic guilds showed a contrasting distribution between the two soil layers, but they closely followed the soil nutrient conditions and metabolic characteristics of keystone species. Our results demonstrated that predictable spatial variation occurs in soil fungal communities in tandem with temporal succession and dynamics of indicator and keystone species in restored grassland on the Loess Plateau.

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“…Liu et al. () also found that AP and the C:P and N:P ratios were strongly correlated with the dominant microbial groups during a restoration process with Robinia‐pseudoacacia artificial forest, which suggests that P is probably a limiting factor that shapes the soil bacterial community composition. Given these previous findings, we suggest that P may have been a limiting element for soil microbial communities during the plantation restoration process on the Loess Plateau in our study.…”

Section: Discussionmentioning

confidence: 95%

Changes in soil fungal communities and vegetation following afforestation with Pinus tabulaeformis on the Loess Plateau

Dang

Shen

et al. 2018

Ecosphere

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Soil fungi have important effects on plant performance and nutrient cycling. To understand the dynamics of the soil fungal community and their response to changes in understory plants and soil properties after afforestation, we investigated a cropland site (CL) and three Pinus tabulaeformis plantation sites with different ages (15, 30, and 45 yr) in the Ziwuling Mountains, Loess Plateau, China. Afforestation increased the soil organic carbon (SOC), total nitrogen (TN), total phosphorus (TP), NO À 3 -N, and NH þ 4 -N contents but decreased the available phosphorus (AP). The biomass and diversity of plants decreased in the herb layer with plantation age, and the biomass of plants increased in the shrub layer. Compared with cropland, the soil fungal diversity indices decreased significantly after afforestation. The soil fungal communities were dominated by Ascomycetes in CL and the 15-year-old plantation, whereas Basidiomycota dominated in the 30-and 45-year-old sites. Correlation analysis showed that the understory vegetation influenced the richness indices more than the diversity indices for the soil fungal community, and herb layer plants had stronger effects on the core soil fungal communities than the shrub layer plants. Soil organic carbon, TN, AP, C:P ratio, and N:P ratio were significantly correlated with the soil fungal communities. Moreover, the C:P ratio and N:P ratio increased as the forest age increased, thereby indicating that P was a crucial influence factor that affected the development of the soil fungal community in P. tabulaeformis plantations.

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Response of soil microbial community dynamics to Robinia pseudoacacia L. afforestation in the loess plateau: a chronosequence approach

Cited by 86 publications

References 47 publications

Changes in the Soil Bacterial Community in a Chronosequence of Temperate Walnut-Based Intercropping Systems

Changes in the Soil Bacterial Community in a Chronosequence of Temperate Walnut-Based Intercropping Systems

Temporal and spatial succession and dynamics of soil fungal communities in restored grassland on the Loess Plateau in China

Changes in soil fungal communities and vegetation following afforestation with Pinus tabulaeformis on the Loess Plateau

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