Conversion from natural wetlands to forestland and farmland alters the composition of soil fungal communities in Sanjiang Plain, Northeast China

Zhang, Huihui; Zhang, Siyu; Meng, Xu; Li, Mengsha; Mu, Liqiang; Lei, Jing-Pin; Sui, Xin

doi:10.1080/13102818.2018.1459208

Cited by 12 publications

(4 citation statements)

References 41 publications

(42 reference statements)

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“…Qin discovered that the diversity of soil fungi was higher in other land use types than in farmland soils. In another study conducted by Zhang et al (2018) on the Sanjiang Plain Wetland, they found that soil fungal diversity in natural wetlands was significantly lower than that in croplands following the transition from natural wetlands to croplands, which is different from our findings. This may be due to the differences in soil physicochemical properties caused by the different geographical locations of our research and Zhang et al (2018) .…”

Section: Discussioncontrasting

confidence: 99%

“…In another study conducted by Zhang et al (2018) on the Sanjiang Plain Wetland, they found that soil fungal diversity in natural wetlands was significantly lower than that in croplands following the transition from natural wetlands to croplands, which is different from our findings. This may be due to the differences in soil physicochemical properties caused by the different geographical locations of our research and Zhang et al (2018) . Through the Pearson analyses, we found that soil fungal diversity was negatively correlated with pH, possibly due to a decrease in soil pH associated with the extension of the time of wetland restoration, leading to slightly acidic ( Table 1 , p < 0.05).…”

Section: Discussioncontrasting

confidence: 99%

“…Soil fungal diversity was highly significantly positively correlated with SWC, which could be due to changes in moisture leading to fluctuations in the environment where fungi survive, thereby affecting interactions between fungi and their environment ( Kennedy and Peay, 2007 ), leading to changes in fungal diversity. Furthermore, our study was conducted in June, while Zhang et al (2018) conducted their study in October. The difference in survey time may also lead to variations in the composition of aboveground vegetation communities, which could be the main reason for the different results.…”

Section: Discussionmentioning

confidence: 99%

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Effects of different restoration stages on soil microbial community composition and diversity in Naolihe Wetland, China

Meng,

Liu,

Meng

et al. 2024

Front. Microbiol.

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Soil microorganisms can be used as one of the important indicators of wetland ecosystem restoration. To study the effects of different restoration stages on soil microbial community composition and diversity in Naolihe Wetland, we employed a “time and space parallel” method. Four restoration stages, namely corn field (Corn), short-term restoration wetland (2 years, ST), long-term restoration wetland (8 years, LT) and natural wetland (>25 years, NW), were selected to represent the restoration time and geographical location in Naolihe Nature Wetland. We investigated the composition and diversity of soil microbial communities in different restoration wetland (from corn fields to natural wetlands) by using 16S rRNA and ITS rRNA gene sequencing. We also performed chemical experiments to measure soil enzyme activity and physicochemical properties at each sampling site. The results showed that soil physicochemical properties and enzyme activities significantly differed with the extension of wetland restoration years (p < 0.05). Proteobacteria, Acidobacteria, and Actinobacteria are the most dominant phyla in bacterial. The alpha diversity of soil bacteria was the highest in the corn field (Corn), and ST-LT-NW first decreased and then increased with the extension of wetland restoration years. There are two most dominant phyla (Ascomycota and Mucoromycota) in fungal. However, the alpha diversity of soil fungi was the lowest in the Corn and LT stage, and ST-LT-NW first decreased and then increased with the extension of wetland restoration years. The research findings indicated that the changes in soil physicochemical properties with the extension of wetland restoration years play a significant role in shaping the structure and diversity changes of soil microbial communities. Through the analyses of bacterial and fungal functions using the FUNGuild and FAPROTAX databases, the results showed that the abundance of aerobic bacteria in the soil increased more than that of anaerobic bacteria as the wetland restoration years prolonged, while the abundance of saprotrophic, symbiotic, and pathogenic fungi in the soil significantly decreased with the prolonged wetland restoration years. This study will help us better understand the process of restoration after farmland abandonment, providing valuable reference information for the implementation of a series of wetland ecological restoration projects in the future.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Effects of different restoration stages on soil microbial community composition and diversity in Naolihe Wetland, China

Meng,

Liu,

Meng

et al. 2024

Front. Microbiol.

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“…Wei et al (2019) showed that the response of soil microbial communities to human activities is varied. H. Zhang et al (2018) found that wetland conversion resulted in changes in soil fungal community pattern. However, the comparative characteristics of soil microbial community in different degraded types of wetlands are not clear.…”

Section: Introductionmentioning

confidence: 99%

Variations in the diversity of the soil microbial community and structure under various categories of degraded wetland in Sanjiang Plain, northeastern China

Wang

et al. 2021

Land Degrad Dev

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Understanding the changes in microbial community composition in wetlands affected by different types of degradation can help enrich theoretical knowledge about wetland degradation. However, studies of the relative role of microorganisms under different types of degradation of wetlands are rare in wetland ecology. Because of agricultural development, a large volume of groundwater has been extracted from the Sanjiang Plain over the last few decades, which has caused wetland degradation.To provide information for the development and protection of this wetland ecosystem, investigations into the processes of wetland degradation are important. The aim of the present work was to assess the impacts of wetland degradation on soil microbial communities under four different types of wetlands degradation in the Sanjiang Plain: swamp meadow (SW), meadow wetland (MW), paddy farmland (PF), and cropland (CL). Both 16S and ITS rRNA gene amplicon sequencing were used to evaluate the diversity and composition of bacteria and fungi. A total of 638,758 effective 16S rRNA and 916,211 valid internal transcribed spacer rRNA gene sequences were obtained, which were classified into 11 fungal and 40 bacterial phyla. The dominant fungal and bacterial phyla were Ascomycota and Proteobacteria, respectively. In addition, wetland degradation increased the relative abundances of Chloroflexi and Gemmatimonadetes, but the relative abundances of Proteobacteria and Verrucomicrobia significantly decreased. The bacterial Shannon index of SW was lower than those of the other investigated sites. Fungal diversity showed no significant differences for different types of degraded wetlands. In addition to wetland degradation, different reactions of the dominant microbial phyla and their diversity were clearly coorelated with total phosphorus (TP), total potassium (TK), available potassium (AK), and soil organic matter (SOM), which formed essential criteria that influenced the soil microbial communities. Wetland degradation resulted in the decrease of soil nutrient and the decline of the abundance of dominant phylum in soil bacterial and fungal communities. These changes can be used as an early warning signal for the degrading wetland of the Sanjiang Plain.Yining Wu and Nan Xu have contributed equally to this work.

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Reclamation of coastal marshes to croplands shifts molecular composition of soil organic matter in the Bohai Rim

Xu,

Zhu,

Yang

et al. 2024

Land Degrad Dev

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Reclamation of coastal marshes to croplands lost massive reserves of soil organic matter (SOM). However, it is uncertain how reclamation shifts chemical composition of SOM and its size fractions. Here, we investigated this issue at two coastal marshes (Qilihai, degradation with seasonal waterlog; Beidagang, annual long‐term waterlog) along with adjacent long‐term reclaimed croplands on the coast of the Bohai Bay, China. Three SOM fractions: coarse particulate (cPOM, >250 μm), fine particulate (fPOM, 53–250 μm), and mineral‐associated organic matter (<53 μm) were analyzed by pyrolysis‐gas chromatography–mass spectrometry. Compared with the Qilihai marsh, the Beidagang marsh had higher SOM contents and lower proportions of microbial‐derived N‐containing compounds, which was attributed to the waterlogging‐induced weaker decomposition. Reclamation decreased the SOM contents (−53.6% to −63.3%) and proportions of lignin in cPOM (−44% to −52%) at both sites. However, reclamation‐induced shifts of molecular composition of SOM between the two sites diverged. At the Qilihai site, reclamation decreased the relative abundances of N‐containing compounds (−28%) but increased the proportions of lipids (+17%) and phenolics (+40.7%) in mineral‐associated organic matter. At the Beidagang site, reclamation decreased the proportions of monocyclic aromatics (−60.3% to −70.2%), but increased the relative abundances of N‐containing compounds (+175% to +407%) in all fractions. By contrast, the molecular composition of SOM at the two croplands had covergent pattern. In conclusion, despite of marsh locations with different waterlogging conditions, long‐term reclamation of wetlands to croplands generated convergent patterns in storage and molecular composition of SOM, which was attributed to the similar cropland cultivation.

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Conversion from natural wetlands to forestland and farmland alters the composition of soil fungal communities in Sanjiang Plain, Northeast China

Cited by 12 publications

References 41 publications

Effects of different restoration stages on soil microbial community composition and diversity in Naolihe Wetland, China

Effects of different restoration stages on soil microbial community composition and diversity in Naolihe Wetland, China

Variations in the diversity of the soil microbial community and structure under various categories of degraded wetland in Sanjiang Plain, northeastern China

Reclamation of coastal marshes to croplands shifts molecular composition of soil organic matter in the Bohai Rim

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