A5076512375- Soil Carbon and Nitrogen Dynamics
- Microbial Community Ecology and Physiology
- Peatlands and Wetlands Ecology
- Plant nutrient uptake and metabolism
- Soil and Water Nutrient Dynamics
- Agricultural Systems and Practices
- Rice Cultivation and Yield Improvement
- Water-Energy-Food Nexus Studies
- Legume Nitrogen Fixing Symbiosis
- Constructed Wetlands for Wastewater Treatment
- Agriculture, Soil, Plant Science
- Plant responses to elevated CO2
- Atmospheric chemistry and aerosols
- Biocrusts and Microbial Ecology
- Geochemistry and Elemental Analysis
- Marine and coastal ecosystems
- Plant Ecology and Soil Science
- Soil and Environmental Studies
- Fire effects on ecosystems
- Mycorrhizal Fungi and Plant Interactions
- Climate change and permafrost
- Soil and Unsaturated Flow
- Agriculture Sustainability and Environmental Impact
- Environmental and Agricultural Sciences
- Plant responses to water stress
Fujian Normal University
2018-2024
Wuyi University
2021-2024
Nutrient addition to forest ecosystems significantly influences belowground microbial diversity, community structure, and ecosystem functioning. Nitrogen (N) in forests is common China, especially the southeast region. However, influence of N on soil diversity subtropical remains unclear. In May 2018, we randomly selected 12 experimental plots a Pinus taiwanensis within Daiyun Mountain Nature Reserve, Fujian Province, subjected them treatments for one year. We investigated responses...
Soil phosphorus (P) is a critical factor that limits plant productivity. Enhanced nitrogen (N) deposition has the potential to modify P transformation and availability, thereby potentially affecting long-term productivity of forests. Here, we conducted an 11-year-long field experiment simulate N by adding forest canopy in N-limited northern subtropical central China assessed changes soil organic mineralization, fractions, microbial biomass content, phosphatase activity, content under...
Soil enzymes play important roles in soil C and nutrient cycling. However, the effects of N addition on enzyme kinetics underlying mechanisms remain unclear. Thus, we aimed to determine short-term properties, microbial maximum reaction rate (Vm, which is attained at saturating substrate concentrations), Michaelis constant (Km, where a high Km indicates low affinity) C- (β-1,4-glucosidase cellobiohydrolase), N- (β-1,4-N-acetylglucosaminidase L-leucine aminopeptidase), P-degrading (acid...
Increasing temperature and nitrogen (N) deposition are two large-scale changes projected to occur over the coming decades. The effects of these on dissolved organic matter (DOM) largely unknown. This study aimed assess warming N addition quantity quality DOM from a subtropical Cunninghamia lanceolata plantation. Between 2014 2016, soil solutions were collected 0–15, 15–30, 30–60 cm depths by using negative pressure sampling method. measured under six different treatments. spectra showed that...
Nitrogen (N) is a major factor affecting rice yield and lodging resistance. Previous studies have primarily investigated the impact of N management on in conventional monoculture (RM); however, few performed such investigations rice-crayfish coculture (RC). We hypothesized that RC would increase risk optimizing application practices improve resistance without food security. conducted two-factor (rice farming mode practice) field experiment from 2021 to 2022 test our hypothesis. The modes...
The priming effect (PE) is important for understanding the decomposition of soil organic matter (SOM) and forecasting C-climate feedback. However, there are limited studies on microbial community-level properties keystone taxa involved in process. In this study, we collected from a subtropical Phyllostachys edulis forest undergoing long-term N-addition conducted an incubation experiment to evaluate effects single repeated addition 13C-labeled glucose. Our results demonstrated that previously...
Abstract Single and mixed vegetation types have significant effects on soil parameters the composition diversity of bacterial community. To understand influence different structure community across depth in a subtropical forest, we assessed relative abundance edaphic parameters, including pH, cation exchange capacity (CEC), dissolved organic C Daiyun Mountain Nature Reserve Fujian Province, southeastern China. The study area constitutes pine coniferous forest (CF) Pinus taiwanensis Hayata,...
Understanding changes in soil enzyme activities and ecoenzymatic stoichiometry is important for assessing nutrient availability microbial limitation mountain ecosystems. However, the variations of across elevational gradients its driving factors subtropical forests are still unclear. In this study, we measured properties, biomass, related to carbon (C), nitrogen (N), phosphorus (P) cycling Pinus taiwanensis at different altitudes Wuyi Mountains. By analyzing stoichiometric ratio, vector...
Soil phosphatases are important in the mineralization of organophosphates and phosphorus (P) cycle. The kinetic mechanisms response to nitrogen (N) deposition remain unclear. We carried out a field experiment with four different concentrations N: 0 g N·hm-2·a-1(control), 20 N·hm-2·a-1(low N), 40 N·hm-2·a-1(medium 80 N·hm-2·a-1(high N) subtropical Moso bamboo forest. samples were then collected from 15 cm depth, after 3, 5 7 years N addition. analyzed soil chemical properties microbial...
研究土壤垂直剖面CO2通量的分布是了解生态系统碳循环的重要环节.本研究以亚热带杉木幼林为研究对象，于2014年5月至2015年5月，采用气井法结合Fick扩散法则和扩散系数模型计算15、30、60 cm各层土壤的CO2通量，探讨增温对其影响.结果表明：杉木幼林土壤增温影响可至60 cm土层，增温显著降低了各层土壤含水量（p<0.05）.增温显著增加了杉木幼林土壤CO2通量（p<0.05），深层尤为显著；增温处理（W）后15、30、60 cm土层的土壤CO2通量年均值分别为1.35、0.73和0.36 μmol·m-2·s-1，比对照（CT）相应增加了36%、180%和192%，并且增温显著影响了土壤基础呼吸速率F10和土壤温度敏感性指数Q10（p<0.05）.土壤温度和含水量能够共同解释各层土壤CO2通量季节变异的62%~87%，且增温处理后其R2增大.双因子模型拟合结果优于单因子模型.增温能够增加土壤呼吸，对全球大气CO2浓度升高具有正反馈作用.