Impacts of simulated nitrogen deposition on soil enzyme activity in a northern temperate forest ecosystem depend on the form and level of added nitrogen

Li, Yun; Wang, Chunmei; Gao, Shijie; Wang, Peng; Qiu, Jingcong; Shang, Shuaishuai

doi:10.1016/j.ejsobi.2021.103287

Cited by 32 publications

(20 citation statements)

References 53 publications

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“…We observed that N addition increased BG activity, which is involved in C-cycling, and decreased NAG + LAP activity, which is involved in soil N cycling. Our results were in agreement with previous reports that the addition of exogenous nutrients changes the activity of extracellular enzymes ( Li et al, 2021b ; Shi et al, 2021 ; Xiao et al, 2021 ). These results can be explained by the resource allocation theory of enzyme production that N addition inhibits the activity of N-cycling enzymes and increases the activity of other enzymes ( Sinsabaugh and Moorhead, 1994 ; Allison and Vitousek, 2005 ).…”

Section: Discussionsupporting

confidence: 94%

“…Many studies have found significant responses of soil and microbial activity to N addition and suggest that the negative effects of N on soil microorganisms are mainly driven by soil acidification ( Treseder, 2008 ; Liu and Greaver, 2010 ; Chen et al, 2016 ). For instance, Li et al (2021b) reported that N fertilization increased soil NH 4 + , and activity of BG and ACP. Wu et al (2019) observed that N addition changed soil pH and the content of NH 4 + -N and AP, which elicited a negative effect on microbial activity.…”

Section: Discussionmentioning

confidence: 99%

“…Soil pH is an important factor that influences soil enzyme activity ( Burns et al, 2013 ; Wang et al, 2014 ; Li et al, 2021b ), with soil enzymes showing a clearly defined optimal pH range ( Frankenberger and Tabatabai, 1980 ). Although we did not find any significant negative relationships between soil pH and the E C:N , E C:P , and E N:P ratios, soil enzyme activity (BG, NAG + LAP, and ACP) and soil pH were positively correlated, which is consistent with the results of Li et al (2021b) . Specifically, the higher N and P inputs caused changes in soil pH, which affected the migration of P and ultimately led to changes in soil P content and E C:P and E N:P ratios.…”

Section: Discussionmentioning

confidence: 99%

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Effects of Nitrogen and Phosphorus Addition on Soil Extracellular Enzyme Activity and Stoichiometry in Chinese Fir (Cunninghamia lanceolata) Forests

Gan

et al. 2022

Front. Plant Sci.

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Soil extracellular enzymes play an important role in microbial functions and soil nutrient cycling in the context of increasing N deposition globally. This is particularly important for Chinese fir (Cunninghamia lanceolata) forests because of the decline in soil fertility induced by successive rotation. In this study, we aimed to determine the effects of simulated N deposition (N30: 30 kg ha−2 year−1; N60: 60 kg ha−2 year−1) and phosphorus addition (P20: 20 mg kg−1; P40: 40 mg kg−1) on the activity and stoichiometry of soil extracellular enzymes related to soil C, N, and P cycling in Chinese fir. The results showed that N addition alone increased the activity of soil β-1,4 glucosidase (BG) but decreased the activity of N-acetyl-β-d-glucosidase (NAG) and leucine aminopeptidase (LAP). N addition increased the ratios of soil enzymes, C:N and C:P, alleviated microbial N-limitation, and aggravated microbial C-limitation. P addition alone increased enzyme activity, and P40 addition increased the ratio of BG to soil microbial biomass carbon (MBC), and (NAG + LAP):MBC activity ratio, thereby aggravating C restriction. N and P co-addition significantly affected soil extracellular enzyme activity and stoichiometry. For instance, BG activity and BG:MBC activity ratio increased significantly under the N30 + P40 treatment, which intensified C-limitation. Soil pH was the main factor influencing enzyme activity, and these variables were positively correlated. The stoichiometric relationships of enzyme reactions were coupled with soil pH, total nitrogen (TN), and available phosphorus (AP). Our results indicate that changes in soil characteristics induced by N and P inputs influence the activities of soil microorganisms and result in changes in microbial resource acquisition strategies. This study provides useful insights into the development of management strategies to improve the productivity of Chinese fir forests under scenarios of increasing N deposition.

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Section: Discussionsupporting

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Effects of Nitrogen and Phosphorus Addition on Soil Extracellular Enzyme Activity and Stoichiometry in Chinese Fir (Cunninghamia lanceolata) Forests

Gan

et al. 2022

Front. Plant Sci.

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“…Soil enzyme activity is influenced by soil temperature, soil nutrients, microbial community, fertilization, and other factors ( Cheng et al, 2013 ; Díaz et al, 2021 ; Levakov et al, 2021 ; Tan et al, 2021 ). The activities of nitrogen cycle enzymes such as urease, protease, glutaminase, and catalase varied significantly under different nitrogen fertilizer treatments ( Cao et al, 2014 ; He et al, 2021 ; Li et al, 2021b ). Seasonal low temperatures or diurnal variations in temperature can have a significant impact on soil enzymes ( Viswanathan and Krishnan, 1962 ; Cao R. et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Effects of Temperature and Nitrogen Application on Carbon and Nitrogen Accumulation and Bacterial Community Composition in Apple Rhizosphere Soil

Zhang

Phillip

et al. 2022

Front. Plant Sci.

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Malus sieversii grows on the slopes of the Tianshan Mountains in Xinjiang where the difference in daily temperature is significant. In recent years, the rhizosphere soil health of Malus sieversii has been severely impacted by anthropogenic disturbance and pathogenic infestation. The soil nutrient content and soil microorganism diversity are the main components of soil health. Low temperature has negative effects on soil bacterial community structure by inhibiting the accumulation of carbon and nitrogen. However, the effects of temperature and nitrogen application on soil carbon and nitrogen accumulation and the bacterial community composition in the rhizosphere soil of Malus sieversii are unclear. We set two temperature levels, i.e., low temperature (L) and room temperature (R), combined with no nitrogen (N0) and nitrogen application (N1) to explore the response of plant carbon and nitrogen uptake, rhizosphere soil carbon and nitrogen accumulation and bacterial community composition to temperature and nitrogen fertilization. At the same temperature level, plant 13C abundance (P-Atom13C), plant 15N absolute abundance (P-Con15N), soil 15N abundance (S-Atom15N) and soil urease, protease and glutaminase activities were significantly higher under nitrogen application compared with the no-nitrogen application treatment. The bacterial community diversity and richness indices of the apple rhizosphere soil in the N1 treatment were higher than those in the N0 treatment. The relative abundances of Actinobacteria, Rhodopseudomonas, and Bradyrhizobium were higher in the LN1 treatment than in the LN0 treatment. Redundancy analysis (RDA) showed that plant 13C absolute abundance (P-Con13C) and plant 15N absolute abundance (P-Con15N) were the main factors affecting the soil bacterial community composition. In summary, Nitrogen application can alleviate the effects of low temperature stress on the soil bacterial community and is of benefit for the uptakes of carbon and nitrogen in Malus sieversii plants.

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“…Protease enzyme plays a crucial role in the catalysis of nitrogen minerals and nitrogen cycling [48] while polyphenol oxidase could protect roots from bacteria and viruses as they grow [49]. Urease's primary function is to catalyze the transformation of soil amide nitrogen into ammonium nitrogen that can be absorbed directly by plants and its activity is closely related to nitrogen use efficiency [50]. It has been reported that dehydrogenase activity participates in the biological oxidation of soil organic matter, proteolytic activity, and respiration [51].…”

Section: Discussionmentioning

confidence: 99%

Enhancement of Interplanting of Ficus carica L. with Taxus cuspidata Sieb. et Zucc. on Growth of Two Plants

Yang

et al. 2021

Agriculture

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Medicinal-agroforestry systems are one of the multi-functional medicinal plant production systems, gaining attention as a sustainable alternative to traditional monoculture systems. In this study, three planting patterns were established which included: (1) monoculture F. carica (MF); (2) monoculture T. cuspidata (MT); and (3) interplanting F. carica with T. cuspidata (IFT). The differences of growth biomass, photosynthesis, soil nutrients, soil enzyme activities, soil microorganisms, and main secondary metabolites of F. carica and T. cuspidata under the above three models were investigated. Compared with the MF and MT patterns, IFT pattern for 5 months significantly increased the plant growth biomass, photosynthesis, soil organic carbon, total nitrogen, and secondary metabolites content. The activities of acid phosphatase, sucrase, protease, polyphenol oxidase, urease, dehydrogenase, and catalase in soil of IFT were significantly higher than MF and MT patterns. Results showed that IFT pattern is preferred compared to the MF and MT patterns. Our result will help to provide a feasible theoretical basis for the large-scale establishment of F. carica and T. cuspidata mixed forests and obtain high-quality medicine sources for extracting important active ingredients, psoralen and paclitaxel, which are crucial to the long-term sustainable development and production of medicinal plants.

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Impacts of simulated nitrogen deposition on soil enzyme activity in a northern temperate forest ecosystem depend on the form and level of added nitrogen

Cited by 32 publications

References 53 publications

Effects of Nitrogen and Phosphorus Addition on Soil Extracellular Enzyme Activity and Stoichiometry in Chinese Fir (Cunninghamia lanceolata) Forests

Effects of Nitrogen and Phosphorus Addition on Soil Extracellular Enzyme Activity and Stoichiometry in Chinese Fir (Cunninghamia lanceolata) Forests

Effects of Temperature and Nitrogen Application on Carbon and Nitrogen Accumulation and Bacterial Community Composition in Apple Rhizosphere Soil

Enhancement of Interplanting of Ficus carica L. with Taxus cuspidata Sieb. et Zucc. on Growth of Two Plants

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