Long-term nitrogen addition changes soil microbial community and litter decomposition rate in a subtropical forest

Wu, Jianping; Liu, Wenfei; Zhang, Weixin; Shao, Yuanhu; Duan, Honglang; Chen, Baodong; Wei, Xiaohua; Fan, Houbao

doi:10.1016/j.apsoil.2019.05.014

Cited by 64 publications

(46 citation statements)

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“…In this study, such decline was only reflected by the Simpson's and Shannon's indices of the 200-year-old within the alpha index we considered, but this negative effect was relatively small (P > 0.05). Our result confirmed previous reports on the occurrence of different responses of soil bacterial abundance to fertilization between forest ages, with a significant decrease in young stands whilst the older stands had more stable bacterial communities (Frey et al 2014, Maaroufi et al 2015, Wu et al 2019.…”

Section: Discussionsupporting

confidence: 92%

“…Our data revealed that fertilizationinfluenced soil bacteria mainly via change of soil moisture, NO 3 --N, DOC and pH in the 46-year-old stands, which had less effects in the older stands. Results from Wu et al (2019) confirmed a strongly negative correlation between soil bacterial alpha diversity, main phyla and pH. Furthermore, soil microbial communities were likely to be altered with the variations in soil moisture (Wu et al 2019).…”

Section: Iforest -Biogeosciences and Forestrymentioning

confidence: 69%

“…Results from Wu et al (2019) confirmed a strongly negative correlation between soil bacterial alpha diversity, main phyla and pH. Furthermore, soil microbial communities were likely to be altered with the variations in soil moisture (Wu et al 2019). The significant increase of soil moisture and decrease of soil pH with forest age might alleviate the effects to soil bacteria by fertilization (Wang et al 2018b).…”

Section: Iforest -Biogeosciences and Forestrymentioning

confidence: 75%

“…Total nitrogen oxide (NO x ) emissions increased from 8.4 Tg yr -1 in 1990 to 11.3 Tg yr -1 in 2000, whereas total NH 3 emissions increased from 10.8 to 13.6 Tg during the same period (Lue & Tian 2007, Liu et al 2013). Long-term inputs of inorganic N via atmospheric deposition may have a series of negative impacts on forest ecosystems, such as soil acidification (Tian et al 2017, Li et al 2019, Wu et al 2019, conspicuous changes in soil nutrient (Li et al 2019), and loss of plant community diversity (Zhang et al 2017).…”

Section: Introductionmentioning

confidence: 99%

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Response of soil bacterial communities to nitrogen and phosphorus additions in an age-sequence of subtropical forests

Dai¹,

Wang²,

Chen³

et al. 2021

iForest

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With global nitrogen (N) deposition continuously increasing, few reports exist describing how soil bacteria respond at the molecular level to long-term addition of excess N in variously aged forests. To reveal the responses of soil bacteria to the elevated N, an experiment was conducted with a chronic nutrient addition within differently aged stands (46-, 78-, and 200-years-old) in the northern subtropical China since 2011, including three treatments, CK (no N nor phosphorus (P) additions), N treatment (N, 100 kg N ha-1), and N with P (N+P, 100 kg N ha-1 + 50 kg P ha-1) to examine potential P limitation under N deposition. Metagenomic sequencing was used to examine the snapshot responses of soil bacterial communities. Soil moisture and texture, ammonium, nitrate, SOC (soil organic carbon), TN (soil total nitrogen), TP (total phosphorus), DOC (dissolved organic carbon), DON (dissolved organic nitrogen) were measured to explain the influence mechanism of forest age and fertilization on changes of microbial community. Following N addition, soil bacterial community diversity and most dominant phyla increased, but they showed a decrease with increasing stand age. The effects of fertilization on the same taxa were variable across forest ages. Soil bacterial community responded differently in 7-year fertilization, with distinct shift in 46-year-old forest and adaptability to long-term N addition in the 200-year-old forest. Soil texture and moisture, DOC, DON, pH, SOC/TN and TP were significantly correlated with bacterial community across stand ages, while N fertilization affected the bacterial community mostly via inducing soil moisture, NO3-N, DOC and pH in the 46-year-old forest, whose effects decreased with increasing stand age. Our results suggest that due to the variation of soil physicochemical properties among forest ages, soil bacterial communities are more stable and resilient to N deposition with increasing the age of stands. Soil bacterial communities might not encounter P limitation following the long-term addition of N in the subtropics.

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Section: Discussionsupporting

confidence: 92%

Section: Iforest -Biogeosciences and Forestrymentioning

confidence: 69%

Section: Iforest -Biogeosciences and Forestrymentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Response of soil bacterial communities to nitrogen and phosphorus additions in an age-sequence of subtropical forests

Dai¹,

Wang²,

Chen³

et al. 2021

iForest

View full text Add to dashboard Cite

show abstract

“…In a previous meta-analysis, N additions increased the Shannon indices and reduced bacterial Chao1 indices, although the effect on soil bacterial richness was greater than that on fungal richness [ 28 ]. Similarly, in a subtropical forest, simulated N deposition significantly decreased microbial α-diversity [ 29 , 30 , 32 ]. However, N additions do not always alter in the evenness and richness of soil bacterial and fungal communities.…”

Section: Introductionmentioning

confidence: 99%

Nutrient availability is a dominant predictor of soil bacterial and fungal community composition after nitrogen addition in subtropical acidic forests

et al. 2021

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Nutrient addition to forest ecosystems significantly influences belowground microbial diversity, community structure, and ecosystem functioning. Nitrogen (N) addition in forests is common in China, especially in the southeast region. However, the influence of N addition on belowground soil microbial community diversity in subtropical forests remains unclear. In May 2018, we randomly selected 12 experimental plots in a Pinus taiwanensis forest within the Daiyun Mountain Nature Reserve, Fujian Province, China, and subjected them to N addition treatments for one year. We investigated the responses of the soil microbial communities and identified the major elements that influenced microbial community composition in the experimental plots. The present study included three N treatments, i.e., the control (CT), low N addition (LN, 40 kg N ha-1 yr-1), and high N addition (HN, 80 kg N ha-1 yr-1), and two depths, 0−10 cm (topsoil) and 10−20 cm (subsoil), which were all sampled in the growing season (May) of 2019. Soil microbial diversity and community composition in the topsoil and subsoil were investigated using high-throughput sequencing of bacterial 16S rDNA genes and fungal internal transcribed spacer sequences. According to our results, 1) soil dissolved organic carbon (DOC) significantly decreased after HN addition, and available nitrogen (AN) significantly declined after LN addition, 2) bacterial α-diversity in the subsoil significantly decreased with HN addition, which was affected significantly by the interaction between N addition and soil layer, and 3) soil DOC, rather than pH, was the dominant environmental factor influencing soil bacterial community composition, while AN and MBN were the best predictors of soil fungal community structure dynamics. Moreover, N addition influence both diversity and community composition of soil bacteria more than those of fungi in the subtropical forests. The results of the present study provide further evidence to support shifts in soil microbial community structure in acidic subtropical forests in response to increasing N deposition.

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Biogeography and diversity patterns of abundant and rare bacterial communities in paddy soils along middle and lower Yangtze River

Zhu,

Hu,

Wang

et al. 2024

Ecology and Evolution

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The middle and lower reaches of the Yangtze River serve as principal rice production bases in China, yet the biodiversity and ecological processes of bacterial communities in paddy soils are not well understood. This study explores the diversity, composition, ecological function, and assembly processes of abundant and rare bacterial communities in paddy soils. A total of 129 paddy soil samples from 43 sites along the middle and lower reaches of the Yangtze River were collected and analyzed using NovaSeq sequencing. The results showed that the dominant phylum for both abundant and rare taxa was Proteobacteria, with a greater relative abundance of the abundant taxa. The diversity of the abundant community was lower than that of the rare community. Soil properties and geographic variables explained more of the variation in the abundant community than in the rare community. The rare community exhibited a significant distance‐decay relationship. The assembly of the abundant community was more influenced by stochastic processes, although both the abundant and rare communities were governed by stochastic processes. It is concluded that both abundant and rare bacterial communities exhibit differing biogeographic patterns, yet they undergo similar ecological processes in the paddy soils along the middle and lower reaches of the Yangtze River. These observations offer a theoretical framework for a deeper comprehension of the function of both abundant and rare bacteria, as well as the development and preservation of soil bacterial diversity within agricultural ecosystems.

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Long-term nitrogen addition changes soil microbial community and litter decomposition rate in a subtropical forest

Cited by 64 publications

References 64 publications

Response of soil bacterial communities to nitrogen and phosphorus additions in an age-sequence of subtropical forests

Response of soil bacterial communities to nitrogen and phosphorus additions in an age-sequence of subtropical forests

Nutrient availability is a dominant predictor of soil bacterial and fungal community composition after nitrogen addition in subtropical acidic forests

Biogeography and diversity patterns of abundant and rare bacterial communities in paddy soils along middle and lower Yangtze River

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