Changes in soil carbon and nutrients and related extracellular enzymes in successive rotations of Japanese larch plantations

Wang, Hongxing; Wu, Chen; Chen, Dongsheng; Liu, Hongyan; Sun, Xiaomei; Zhang, Shougong

doi:10.1016/j.catena.2021.105386

Cited by 12 publications

(2 citation statements)

References 91 publications

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“…Land-use changes and wet-dry events not only affect soil nutrient availability but also affect microbial community diversity [59]. In our three sample plots, the differences between soil bacterial number, diversity, and richness were not significant, but soil fungi were more sensitive to wet-dry events.…”

Section: Wet-dry Events Drove the Transition Of Soil R-strategist Bac...mentioning

confidence: 57%

Responses of Soil Microbial Survival Strategies and Functional Changes to Wet–Dry Cycle Events

Zhang,

Mo,

Pan

et al. 2023

Microorganisms

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Soil microbial taxa have different functional ecological characteristics that influence the direction and intensity of plant–soil feedback responses to changes in the soil environment. However, the responses of soil microbial survival strategies to wet and dry events are poorly understood. In this study, soil physicochemical properties, enzyme activity, and high–throughput sequencing results were comprehensively anal0079zed in the irrigated cropland ecological zone of the northern plains of the Yellow River floodplain of China, where Oryza sativa was grown for a long period of time, converted to Zea mays after a year, and then Glycine max was planted. The results showed that different plant cultivations in a paddy–dryland rotation system affected soil physicochemical properties and enzyme activity, and G. max field cultivation resulted in higher total carbon, total nitrogen, soil total organic carbon, and available nitrogen content while significantly increasing α–glucosidase, β–glucosidase, and alkaline phosphatase activities in the soil. In addition, crop rotation altered the r/K–strategist bacteria, and the soil environment was the main factor affecting the community structure of r/K–strategist bacteria. The co–occurrence network revealed the inter–relationship between r/K–strategist bacteria and fungi, and with the succession of land rotation, the G. max sample plot exhibited more stable network relationships. Random forest analysis further indicated the importance of soil electrical conductivity, total carbon, total nitrogen, soil total organic carbon, available nitrogen, and α–glucosidase in the composition of soil microbial communities under wet–dry events and revealed significant correlations with r/K–strategist bacteria. Based on the functional predictions of microorganisms, wet–dry conversion altered the functions of bacteria and fungi and led to a more significant correlation between soil nutrient cycling taxa and environmental changes. This study contributes to a deeper understanding of microbial functional groups while helping to further our understanding of the potential functions of soil microbial functional groups in soil ecosystems.

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Section: Wet-dry Events Drove the Transition Of Soil R-strategist Bac...mentioning

confidence: 57%

Responses of Soil Microbial Survival Strategies and Functional Changes to Wet–Dry Cycle Events

Zhang,

Mo,

Pan

et al. 2023

Microorganisms

View full text Add to dashboard Cite

show abstract

“…Soil enzyme activity refers to the ability of soil enzymes to catalyze soil development and fertility formation, and its activity can indicate the strength of soil microbial activity, which can be used as an important biological indicator of soil quality and health [ 45 , 46 ]. Soil enzyme activities such as nitrate reductase, nitrite reductase, and urease are closely related to the intensity of soil N transformation and soil N supply capacity [ 47 , 48 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of Vegetation Restoration on Soil Nitrogen Fractions and Enzyme Activities in Arable Land on Purple Soil Slopes

Li,

Zhang,

Yao

et al. 2023

Plants

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Purple soils are greatly representative of ecologically fragile soils in southern China, yet the impact of vegetation restoration processes on the nitrogen (N) availability in purple soil ecosystems is still unclear. In this study, the soil nutrient content, available N fractions (including microbial biomass N (MBN), ammonium N (NH4+-N), nitrate N (NO3−-N), and total dissolved N (TDN)), and enzyme activities (including urease (URE), nitrate reductase (NR), and nitrite reductase (NIR)) involved in N mineralization and immobilization were investigated across the three vegetation-restoration measures: Camellia oleifera monoculture, Camellia oleifera ryegrass intercropping, and Camellia oleifera intercropping with weeds. The results showed that the Camellia oleifera monoculture mode considerably enhanced the accumulation and availability of soil N and modified the proportion of available N fractions in arable land situated on purple soil slopes, compared to the intercropping mode, the physical, chemical, and microbiological properties of soil demonstrated more pronounced effects due to the Camellia oleifera monoculture vegetation-restoration measures. However, soil nutrient loss is faster on set-aside land and in crop monocultures, and intercropping restoration measures are more beneficial for soil and water conservation under timely fertilization conditions. The soil URE, NR, and NIR activities and MBN content in the Camellia oleifera monoculture model were significantly higher than in the control check sample. Soil N transformation occurs through the combined influence of chemical and biological processes. The relationships between the activities of the three soil enzymes studied and the contents of various components of soil nutrients and effective N displayed significant differences. Notably, URE had a highly significant positive correlation with TOC. There is a strong positive correlation between NR and TN, NIR and TDN, NO3−-N, and NH4+-N. Our findings suggest that vegetation restoration improved the soil N availability and its enzyme activities in purple soils, making an essential contribution to the restoration and sustainability of purple soil ecosystem functions.

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Forest thinning alleviates the negative effects of precipitation reduction on soil microbial diversity and multifunctionality

Wang

Chen

et al. 2023

Biol Fertil Soils

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Changes in soil carbon and nutrients and related extracellular enzymes in successive rotations of Japanese larch plantations

Cited by 12 publications

References 91 publications

Responses of Soil Microbial Survival Strategies and Functional Changes to Wet–Dry Cycle Events

Responses of Soil Microbial Survival Strategies and Functional Changes to Wet–Dry Cycle Events

Effects of Vegetation Restoration on Soil Nitrogen Fractions and Enzyme Activities in Arable Land on Purple Soil Slopes

Forest thinning alleviates the negative effects of precipitation reduction on soil microbial diversity and multifunctionality

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