Article
Environmental Sciences
Zhiqiang Wang, Mingcheng Wang, Kailiang Yu, Huifeng Hu, Yuanhe Yang, Philippe Ciais, Ashley P. Ballantyne, Karl J. Niklas, Heng Huang, Buqing Yao, S. Joseph Wright
Summary: Nitrogen and phosphorus are crucial elements associated with the life history of organisms, and soil microbes play significant roles in nutrient cycling and ecosystem dynamics. This study analyzed microbial C, N, and P concentrations and ratios on a global scale, revealing variations within and across different ecosystems and spatial scales. The scaling exponent of microbial N versus P differed significantly across spatial scales, with soil total P identified as a key contributor to this variation.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Zhiqiang Wang, Mengying Zhao, Zhengbing Yan, Yuanhe Yang, Karl J. Niklas, Heng Huang, Tserang Donko Mipam, Xianjin He, Huifeng Hu, S. Joseph Wright
Summary: Soil microbes play crucial roles in regulating nutrient cycling in terrestrial ecosystems. This study provides comprehensive global-scale information on the distribution of soil microbial biomass carbon, nitrogen, and phosphorus, and emphasizes the importance of soil organic carbon in predicting these nutrient concentrations. The generated global maps of soil microbial nutrients can be used to enhance Earth system models and improve our understanding of terrestrial nutrient cycling.
Article
Environmental Sciences
Suhui Ma, Guoping Chen, Enzai Du, Di Tian, Aijun Xing, Haihua Shen, Chengjun Ji, Chengyang Zheng, Jianxiao Zhu, Jiangling Zhu, Hanyue Huang, Hongbo He, Biao Zhu, Jingyun Fang
Summary: The study found that N deposition has a significant impact on the accumulation of soil microbial residues and their contribution to SOC in different forest ecosystems, specifically affecting the fungal residues and bacterial residues in various forest types. The responses of microbial residue-C in SOC to N addition are dependent on changes in soil total N concentration and the fungi to bacteria ratio under N addition and climate conditions.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Shi-Qi Xu, Xue-Yan Liu, Zhong-Cong Sun, Chao-Chen Hu, Wolfgang Wanek, Keisuke Koba
Summary: The study investigated soil nitrogen transformations in 11 forests with different nitrogen deposition levels, finding that depolymerization, mineralization, and nitrification of soil nitrogen increased while losses decreased with increasing nitrogen deposition. The contribution of denitrification to total nitrate losses also increased with nitrogen deposition, providing new insights into soil nitrogen dynamics and forest nitrogen cycles under different deposition regimes.
GLOBAL BIOGEOCHEMICAL CYCLES
(2021)
Article
Environmental Sciences
Shaoliang Zhang, Ziliang Xiao, Jiping Huo, Haijun Zhang
Summary: This study investigated how soil properties and species competition influence the restoration of herbaceous plants in gullies with poor quality Mollisols in Northeast China. Key factors such as nitrogen content, soil moisture, and phosphorus heterogeneity were found to play crucial roles in vegetation restoration.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Plant Sciences
Hua Ma, Vyacheslav Shurigin, Dilfuza Jabborova, Jeane Aril dela Cruz, Thomas Edison dela Cruz, Stephan Wirth, Sonoko Dorothea Bellingrath-Kimura, Dilfuza Egamberdieva
Summary: The use of biochar has positive effects on soil properties and plant development, although the interaction with beneficial microbes is not well understood. This study evaluated the growth of lettuce after the application of three types of biochar, showing that it positively affected plant interaction with microbial inoculants. The findings provide new insights into the understanding of the interactions between biochar and microbial inoculants, which may affect lettuce growth and development.
Article
Geosciences, Multidisciplinary
Luoqi Zhao, Xiaoni Wu, Na Huang, Denggao Fu, Peiyuan Peng, Huaye Shang, Gongning Huang, Changqun Duan
Summary: Understanding the effects of different plant species on soil phosphorus distributions and characteristics is crucial for land recovery and control of eutrophication in nearby freshwater ecosystems. This study investigated the attributes of Saccharum rufipilum, a perennial grass, and Pinus yunnanensis, a coniferous tree, and their impact on soil physicochemical properties and phosphorus fractions in a P-enriched degraded mountain area. The results showed that the two species had contrasting effects on soil phosphorus fractions, with the grass having a positive influence and the tree having a negative influence. The study also identified soil nitrogen, iron oxides, and root biomass as key factors influencing soil phosphorus fractions and phosphorus sorption potential.
Article
Geosciences, Multidisciplinary
Huiling Guan, Yongqun Zhang, Qinggong Mao, Buqing Zhong, Weibin Chen, Jiangming Mo, Faming Wang, Xiankai Lu
Summary: Global nitrogen deposition has broad impacts on soil microorganisms, but how they respond to elevated N deposition, especially in tropical forest ecosystems, remains unclear. In this study, a field experiment was conducted to investigate the responses of microbial composition, biomass, and community structure with long-term N addition at different stages of tropical forest succession. The results showed that N addition significantly changed microbial community structure, and N treatment contributed more variance to the fungal community than to the bacterial community. These findings suggest that soil microbial community structure is more sensitive to N addition and can be severely altered during forest succession or with the increase in N input.
Article
Ecology
Benjamin Forsmark, Hakan Wallander, Annika Nordin, Michael J. Gundale
Summary: Long-term nitrogen enrichment in coniferous forests can enhance carbon retention in soil, but may also increase the demand for phosphorus. While nitrogen enrichment has been shown to reduce decomposition and increase carbon accumulation, its impact on microbial phosphorus mobilization and soil carbon storage remains uncertain.
FUNCTIONAL ECOLOGY
(2021)
Article
Ecology
Hongying Yu, Lang Li, Quanhui Ma, Xiaodi Liu, Yibo Li, Yuhui Wang, Guangsheng Zhou, Zhenzhu Xu
Summary: Climatic change significantly impacts soil microbial communities in arid ecosystems, but the effects of precipitation patterns and underlying mechanisms are unclear. This study conducted a field experiment to examine soil microbial responses to precipitation changes with nitrogen addition. Key findings revealed that increasing precipitation increased soil microbial biomass, while reversing the precipitation treatments reversed these responses. Nitrogen addition reduced the response rates of most microbial groups, and antecedent soil features played a role in distinguishing microbial responses. Precipitation patterns can regulate soil microbial community responses to climatic change through nitrogen deposition and soil chemical and biological mediation.
Article
Geosciences, Multidisciplinary
Linlin Zheng, Qiong Zhao, Guigang Lin, Xin Hong, Dehui Zeng
Summary: Increasing atmospheric nitrogen (N) deposition can affect soil phosphorus (P) transformations, but the pathways and mechanisms are unclear. This study measured soil P fractions and biochemical properties in larch stands with long-term N addition in northern China. The results show that N addition influences soil P availability and fractions mainly through its effects on soil organic C and microbial properties.
Article
Biodiversity Conservation
Wen Li, Yifei Shi, Dandan Zhu, Wenqian Wang, Haowei Liu, Junyong Li, Nannan Shi, Lei Ma, Shenglei Fu
Summary: Global nitrogen deposition has had significant impacts on the production and morphology of fine roots in forests, affecting the distribution of carbon. The study found that the N treatment approach and sampling time significantly influenced fine root biomass and morphology. Canopy N addition increased fine root biomass, while understory N addition may decrease it, with fine root biomass being most affected by NH4-N and NO3-N in July. Different N treatment approaches led to varying results, with the effects of understory N addition on fine root biomass potentially being overestimated compared to canopy N addition.
ECOLOGICAL INDICATORS
(2021)
Article
Agronomy
Peng Guo, Lingfang Yang, Dongyan Kong, Han Zhao
Summary: This study investigated the impact of different ratios of ammonium and nitrate on forest soil ecosystem and found that ammonium addition led to a greater decrease in fungal biomass, resulting in decreased degradation enzymes and accumulation of organic carbon. Phosphatase activity increased and correlated with C-degrading enzymatic activities, indicating phosphorous may be a limiting factor for degradation. Soil acidification was observed with both ammonium and nitrate addition, but it did not affect enzymatic activities. When the added N ratios were similar to ambient N ratios, fewer changes in soil microbial biomass, enzymatic activities, and SOC were observed.
Correction
Soil Science
Yi Peng, Yisheng Duan, Weige Huo, Minggang Xu, Xueyun Yang, Xihe Wang, Boren Wang, Martin S. A. Blackwell, Gu Feng
Summary: The paper has been corrected.
BIOLOGY AND FERTILITY OF SOILS
(2021)
Article
Agronomy
Yuhao Deng, Meijie Kuang, Zewen Hei, Jiawen Zhong, Ahmed Ibrahim Elsayed Abdo, Hui Wei, Jiaen Zhang, Huimin Xiang
Summary: This study evaluated the effects of nitrogen deposition on paddy field ecosystem and found that it had no significant impact on rice yield, but significantly affected the phosphorus content in rice and soil. Nitrogen deposition also decreased the carbon-phosphorus and nitrogen-phosphorus ratios in the soil, as well as the activities and biomass of microorganisms. Continuous nitrogen deposition may disrupt the nutrient balance and lead to the deterioration of paddy soil environment and a reduction in rice yield.
