Effect of drainage on microbial enzyme activities and communities dependent on depth in peatland soil

Xu, Zhiwei; Wang, Shengzhong; Wang, Zucheng; Dong, Yanmin; Zhang, Yunping; Liu, Shining; Li, Jie

doi:10.1007/s10533-021-00828-1

Cited by 24 publications

(15 citation statements)

References 85 publications

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“…For the BJH peatland system, the effects of drainage on DOC were not likely controlled by enzyme activities alone. In a parallel study of the BJH peatland, the phenol oxidase activity did increase in the drained area, but the hydrolytic activity of organic C decreased, not totally confirming the idea of ‘enzyme latch’ (Xu, Wang, et al, 2021). In another study, Li et al (2020) conducted microcosm experiments on peat cores extracted from the BJH peatland to investigate the effects of drainage.…”

Section: Discussionmentioning

confidence: 93%

The effects of long‐term drainage and short‐term restoration on dissolved organic C concentrations and optical properties in the Baijianghe Peatland

Wei

Wang

et al. 2022

Hydrological Processes

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Peatlands are important reservoirs of terrestrial carbon (C), whose fate can have implications for the global C cycle and climate change. Many peatlands around the world have been drained for agriculture and forestry and restored later on hoping to reduce C emissions and improve water quality. However, the actual effects of these management practices remain unclear. To address this, we investigated the concentration and quality of dissolved organic C (DOC) and water chemistry (nutrient and Fe concentrations) in the surface water (creeks and ditches) of the natural, drained, and restored areas along an elevation gradient of the Baijianghe (BJH) peatland in northeast China from 2017 to 2020. We found significantly higher DOC concentrations in the natural than the drained area, with a heavier, more fulvic, and less aromatic DOC composition upslope, but the difference in DOC quality became smaller downslope. Restoration, on the other hand, did not bring DOC concentrations or quality back to the natural conditions within 2 years. These variations in DOC concentration and quality were closely associated with dissolved Fe concentration, highlighting the role of the Fe redox cycle, as Fe(II) can catalyse phenol oxidation activities and promote DOC production. Vegetation also affected DOC characteristics, as the drained and restored areas were dominated by shrubs with woodier tissues, which probably released less in amount but more recalcitrant DOC. Our study features rare side‐by‐side comparisons between pristine, drained, and restored areas of the same peatland, and sheds light on factors affecting peatland DOC under different management practices.

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Section: Discussionmentioning

confidence: 93%

The effects of long‐term drainage and short‐term restoration on dissolved organic C concentrations and optical properties in the Baijianghe Peatland

Wei

Wang

et al. 2022

Hydrological Processes

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“…Water regime could also affect soil microbial abundance. The effects of water drainage on soil microbial community and enzyme activity were dependent on soil depth in peatlands ( Xu et al, 2021 ). When SWC was high, soil microbial abundance decreased because microbial heterotrophic respiration of microorganisms was inhibited ( Wagner et al, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

Soil microbial abundance was more affected by soil depth than the altitude in peatlands

et al. 2022

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Soil microbial abundance is a key factor to predict soil organic carbon dynamics in peatlands. However, little is known about the effects of altitude and soil depth and their interaction on soil microbial abundance in peatlands. In this study, we measured the microbial abundance and soil physicochemical properties at different soil depths (0–30 cm) in peatlands along an altitudinal gradient (from 200 to 1,500 m) on Changbai Mountain, China. The effect of soil depth on soil microbial abundance was stronger than the altitude. The total microbial abundance and different microbial groups showed the same trend along the soil depth and altitudinal gradients, respectively. Microbial abundance in soil layer of 5–10 cm was the highest and then decreased with soil depth; microbial abundance at the altitude of 500–800 m was the highest. Abiotic and biotic factors together drove the change in microbial abundance. Physical variables (soil water content and pH) and microbial co-occurrence network had negative effects on microbial abundance, and nutrient variables (total nitrogen and total phosphorus) had positive effects on microbial abundance. Our results demonstrated that soil depth had more effects on peatland microbial abundance than altitude. Soil environmental change with peat depth may lead to the microorganisms receiving more disturbances in future climate change.

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“…In addition, the biogeochemical properties of peatland that have been affected by drainage are organic matter decomposition and fractions, soil respiration, soil enzymes, elemental concentration, microbial degradation, peat humification, and so on (Moore and Basiliko, 2006;Olde Venterink et al, 2009;Macrae et al, 2013;Hulatt et al, 2014;Brown et al, 2015;Krüger et al, 2015;Harris et al, 2020;Xu et al, 2021). In addition, studies on the impact of peatland drainage on the vegetation cover have been conducted by Ramchunder et al (2009) and Haapalehto 2010) studied the effect of drainage on the plant species abundance within a Welsh blanket peatland.…”

Section: Cluster #1mentioning

confidence: 99%

Mapping the restoration of degraded peatland as a research area: A scientometric review

Apori

Mcmillan

Giltrap

et al. 2022

Front. Environ. Sci.

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Degraded peatland has reduced many ecosystem services, such as water quality and quantity, biodiversity, carbon storage, climate regulations, and other cultural benefits. Therefore, several initiatives for the restoration of degraded peatland (RDP) have attempted to restore the ecosystem processes, productivity, and services of the degraded peatland to its original natural condition. Notwithstanding the popularity of RDP research among researchers and industry practitioners, a quantitative technique to map a comprehensive survey of the intellectual core and the general body landscape of knowledge on RDP research does not exist. In this study, a scientometric analysis was employed to analyze 522 documents using VOSviewer and CiteSpace. The Web of Science database was used to retrieve bibliographic records using the advanced search “TS (topic) = (‘drained peatland restoration’ OR ‘drained bog restoration’ OR ‘drained mire restoration’ OR degraded peatland restoration’ OR ‘degraded bog restoration’ OR ‘drained peatland reclamation’ OR ‘drained bog restoration’ OR‘ degraded peatland reclamation’ OR ‘degraded bog reclamation’ OR‘ drained mire restoration’ OR ‘degraded mire reclamation’ OR ‘degraded fen restoration’ OR ‘drained fen reclamation’). “The outcome sought to provide relevant information in RDP research, such as (i) publication trends, (ii) research outlets, (iii) most influential keywords, (iv) most influential institutions and authors, and (v) top influential countries active in RDP research. In addition, four clusters were identified to ascertain the central theme of RDP research, in which cluster one is linked to the central research theme-“ impact of drainage on peatland ecosystem services; cluster two focused on the impact of peatland restoration on greenhouse gas emissions; cluster three is associated with peatland restoration and biogeochemical properties; and cluster four is related to peatland restoration and species richness. A new research hotspot, such as soil respiration, was identified via the keywords with the strongest citation bursts. This study will provide various stakeholders (e.g., industry, journal editors, policymakers, and researchers) with an instinctive understanding of the research status and the development frontier of RDP research.

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Effect of drainage on microbial enzyme activities and communities dependent on depth in peatland soil

Cited by 24 publications

References 85 publications

The effects of long‐term drainage and short‐term restoration on dissolved organic C concentrations and optical properties in the Baijianghe Peatland

The effects of long‐term drainage and short‐term restoration on dissolved organic C concentrations and optical properties in the Baijianghe Peatland

Soil microbial abundance was more affected by soil depth than the altitude in peatlands

Mapping the restoration of degraded peatland as a research area: A scientometric review

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