Evidence map›Paper›PMID 40447836›Full record

ArticleScientific reports2025

Soil nitrogen-hydrolyzing enzyme activities respond differently to the freeze-thaw temperature and number of cycles.

Shiyong Li, Meng Zhou, Shiyang Guan, Liangqian Ma, Shuai Zhu, Yao Wang, Yimin Chen, Yueyu Sui, Xiaoguang Jiao

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Shiyong Li *College of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China.
Meng Zhou *State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China.
Shiyang Guan *College of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China.
Liangqian MaState Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China.
Shuai ZhuCollege of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China.
Yao WangState Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China.
Yimin ChenState Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China.
Yueyu SuiState Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China.
Xiaoguang JiaoCollege of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China. 2004086@hlju.edu.cn.

Funding

Investigation of Farmland Soil Resources and Health Condition in the Black Soil Region of Northeast China 2021FY100400National Natural Science Foundation of China 42077081National Natural Science Foundation of China 42307437Natural Science Foundation of Heilongjiang Province in China YQ2023D007
6 · The paper itself

Abstract

Soil nitrogen-hydrolyzing enzymes catalyzes a key rate-limiting step in regulating the circulation of soil nutrient elements. The response of soil nitrogen (N)-hydrolyzing enzyme activities to environmental changes has been investigated in different geographic scales or ecosystems. Global warming has increased the frequency of soil freeze-thaw (FT) events, resulting in drastic changes in soil enzyme activities. Clarifying the changes in soil N-hydrolyzing enzymes under freeze-thaw conditions is essential for improving the N cycling and utilization efficiency in soil. However, how soil N-hydrolyzing enzymes respond to FT remains unclear. This study was aimed to analyze the influence of FT on soil N-hydrolyzing enzyme activity in Mollisols. The results showed that soil physicochemical properties and enzyme activities were changed after freeze-thaw events, and freeze-thaw temperature (FTF) had a greater impact on these properties than the number of freeze-thaw cycles (FTC). Correlation analysis showed that total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP) and pH were the major factors affecting enzyme activities in FT events. Soil N-hydrolyzing enzyme activity was mainly regulated by environmental factors, which can directly and indirectly affect the soil enzyme activity. In the soil ecosystem, pH, TOC, TN and TP were important factors in counteracting damage to enzyme activity from FT effects and a suitable environment and adequate nutrients can limit damage to enzymes from FT events. The findings will better predictions the changing patterns of climate change on soil N-hydrolyzing enzyme activity.

Indexed as

FreezingNitrogenSoilEcosystemHydrogen-Ion ConcentrationHydrolysisPhosphorusTemperatureNitrogenPhosphorusSoilEnzyme activityFreeze-thaw cycleFreeze-thaw frequencyMicrobial nitrogenSoil physicochemical properties

Identifiers

PMID40447836
PMCPMC12125222

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.