Effect of Soil Layer and Plant–Soil Interaction on Soil Microbial Diversity and Function after Canopy Gap Disturbance

Yu, Xuan; Lin, Yuping; Fei, Shixuan; Ma, Zitong; Hao, Ruqian; Zhong, Zhao

doi:10.3390/f9110680

Cited by 17 publications

(10 citation statements)

References 47 publications

(52 reference statements)

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“…At each site, we divided a plot of 10 × 10 m from the area away from the road. We collected surface soil (0–15 cm) samples using five-point method and mixed into one soil sample at each plot [ 6 , 38 ]. Soil samples from all 50 sampling locations were filtered in sterilized stainless steel vessels to remove tree roots, rocks, plant, and animal debris with tweezers.…”

Section: Framework and Data Collectionmentioning

confidence: 99%

Effect Mechanism of Land Consolidation on Soil Bacterial Community: A Case Study in Eastern China

Lin

Liu

et al. 2022

IJERPH

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Farmland consolidation is an effective tool to improve farmland infrastructures, soil quality, and sustain a healthy farmland ecosystem and rural population, generating contributions to food security and regional sustainable development. Previous studies showed that farmland consolidation regulates soil physical and chemical properties. Soil microorganisms also play an important role in soil health and crop performance; however, few studies reported how farmland consolidation influence soil microecology. Here, we used DNA sequencing technology to compare bacterial community structure in farmlands with and without consolidation. DNA sequencing technology is the most advanced technology used to obtain biological information in the world, and it has been widely used in the research of soil micro-ecological environment. In September 2018, we collected soil samples in Jiashan County, Zhejiang Province, China, and used DNA sequence technology to compare the bacterial community structure in farmlands with and without consolidation. Our results found that (1) farmland consolidation had significant impacts on soil microbial characteristics, which were mainly manifested as changes in microbial biomass, microbial diversity and community structure. Farmland consolidation can increase the relative abundance of the three dominant bacteria phyla and the three fungal dominant phyla, but it also negatively affects the relative abundance of the six dominant bacteria phyla and the three fungal dominant phyla. (2) Farmland consolidation had an indirect impact on soil bacterial community structure by adjusting the soil physical and chemical properties. (3) The impact of heavy metals on bacterial community structure varied significantly under different levels of heavy metal pollution in farmland consolidation areas. There were 6, 3, 3, and 5 bacterial genera that had significant correlations with heavy metal content in cultivated land with low pollution, light pollution, medium pollution, and heavy pollution, respectively. The number of heavy metal-tolerant bacteria in the soil generally increased first and then decreased under heavy metal polluted conditions. Our study untangled the relationship between varied farmland consolidation strategies and bacteria through soil physcicochemical properties and metal pollution conditions. Our results can guide farmland consolidation strategies and sustain soil health and ecological balance in agriculture.

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Section: Framework and Data Collectionmentioning

confidence: 99%

Effect Mechanism of Land Consolidation on Soil Bacterial Community: A Case Study in Eastern China

Lin

Liu

et al. 2022

IJERPH

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“…Mackay et al and Smith et al also found this phenomenon in mixed-species forests [14,48]; Yang et al found that total PLFA abundance significantly changed only in the first 2 or 4 years in artificially planted Sonneratia apetala and Sonneratia caseolaris stands, pointing out that microbial biomass might have reached a stable state in the first few years [49]. AMF plays an important role in improving soil fertility [12,50], and Luo et al found the highest amounts of AMF in the oldest Picea asperata plantations (50-year) [51]. Interestingly, AMF abundances were significantly highest in 25-year stands and then decreased in 45-year ones in our study, probably because young trees have more developed fine roots than older trees [52,53].…”

Section: Effect Of Stand Age On Microbial Communities and Enzyme Actimentioning

confidence: 89%

“…Furthermore, soil microorganisms and extracellular enzymes excreted by microbes are also useful indicators given their important roles in nutrients conversion and organic matter decomposition [11]. Changes in microbial communities or enzyme activities can reflect shifts in soil fertility [12][13][14]. To assess soil fertility more comprehensively, soil physicochemical and microbial parameters should be synthesized in studies while in recent years, more efforts have been made towards exploring soil physicochemical properties of Chinese fir plantations [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Prolonging Rotation of Chinese Fir to over 25 Years Could Maintain a Better Soil Status in Subtropical China

Miao

Kang

et al. 2019

Forests

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Although Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) is an important species for wood production in subtropical China, it serious declines in soil nutrients and timber productivity in plantations have been reported, probably caused by successive rotation and inappropriate cutting time. Although the significant effect of stand age on soil properties has been widely recognized, research on soil enzymes and microbial communities is relatively rare. In this study, assuming that short rotation period is one important reason for soil degradation, we measured soil physicochemical properties, microbial community composition, and enzyme activity in 3-, 15-, 25- and 45-year Chinese fir forests in Jiangxi province of China. Soil organic carbon (SOC) content decreased from 3-year to 25-year stands and then increased in 45-year stands. Despite the significant relationship between SOC and the abundance of total phospholipid fatty acids (PLFAs), no notable changes in the abundance of PLFAs were detected with increasing tree ages, except for the abundances of arbuscular mycorrhizal fungi (AMF) which were significantly higher in 25-year stands. However, the ratios of gram-positive to gram-negative bacteria (G+/G−) and fungi to bacteria (F/B) both decreased with increasing stand age. 45-year stands showed the highest activities of both phosphatase and β-glucosidase. Total potassium (TK) content and net N mineralization rate both had significant links with soil microbial community structure. Collectively, our study emphasized that stand age could significantly affect soil physicochemical properties and the microbial community. In general, 25-year stands showed poorer soil status compared to that of 45-year stands. Thus, the cutting age of Chinese fir should be increased to over 25 years to maintain a better soil status.

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“…All the sampling sites were paddy fields and all the paddies from the sampling sites were xiushui 134. The soil samples were collected from the bulk topsoil (0–10 cm) along a 100 × 100 m square (Legrand et al, 2018; Yu et al, 2018). Samples were removed of roots, stones, plant residues, animals and other things manually, then stored with 20 g per sample below −80 °C before DNA extraction, and transported 500 g per sample to the laboratory for analysis on physicochemical, heavy metals and other environmental variables (Lüneberg et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

“…Soil microbial communities play a critical role in organic matter (OM) decomposition and nutrient cycling of carbon, nitrogen and phosphorus. They could respond quickly to the environmental changes (Bender, Wagg & Van Der Heijden, 2016; Nottingham et al, 2018; Yu et al, 2018). The diversity and composition of the soil microbial community is directly related to its function, structure and aggregation (Bender, Wagg & Van Der Heijden, 2016; Guo et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Comprehensive assessment of paddy soil quality under land consolidation: a novel perspective of microbiology

Lin

et al. 2019

PeerJ

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Soil quality assessment is an important means to demonstrate how effective land consolidation is. However, the existing assessment system is not sufficient to reflect actual soil quality. So, the purpose of this study is to integrate abiological and biological indicators into a comprehensive assessment to evaluate the paddy soil quality under different land consolidation practices. Soil samples were collected from 35 paddy sites under different land consolidation practices including land merging, land leveling (LL), ditch construction (DC) and application of organic fertilizer (AO). A total of 10 paddy sites were selected under conventional tillage (CT) from non-land consolidation area as a control group in Y county, China. The results indicated that soil organic matter (OM), total nitrogen (TN), available phosphorus, bacterial functional diversity (BFD), bacterial and fungal abundances were significantly improved. Fields under LL, among all the land consolidation practices, might still face the risk of land degradation caused by low TN, OM and microbial diversity. High microbial biomass, BFD and OM were significantly higher in fields under AO in nutrient cycle. According to the results of comprehensive assessment, the samples with severe heavy metal contamination and low microbial diversity were generally concentrated in CT. These results indicated that land consolidation was an efficient technique to improve soil quality and could achieve higher quality of agricultural products.

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Effect of Soil Layer and Plant–Soil Interaction on Soil Microbial Diversity and Function after Canopy Gap Disturbance

Cited by 17 publications

References 47 publications

Effect Mechanism of Land Consolidation on Soil Bacterial Community: A Case Study in Eastern China

Effect Mechanism of Land Consolidation on Soil Bacterial Community: A Case Study in Eastern China

Prolonging Rotation of Chinese Fir to over 25 Years Could Maintain a Better Soil Status in Subtropical China

Comprehensive assessment of paddy soil quality under land consolidation: a novel perspective of microbiology

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