Abstract Western Jilin Province is one of the world's three major saline–alkali land distribution areas, and also an important area global climate change carbon cycle research. Rhizosphere soil microorganisms enzymes are most active components in soil, which closely related to can reflect organic (SOC) dynamics sensitively. Soil inorganic (SIC) main existing form pool arid land, its quantity affects pattern accumulation storage. Previous studies mostly focus on SOC, pay little attention SIC....

Western Jilin province has the most serious area of soda salinization in Northeast China, which affects and restricts sustainable development agriculture. The effects physico-chemical properties rhizosphere non-rhizosphere soil on microbial diversity enzyme activities (polyphenol oxidase, catalase, invertase, amylase) were evaluated typical saline-alkali paddy field. Community-level physiological profile (CLPP) based Biolog-ECO plates was used to assess functional microorganisms....

Understanding land carbon stock dynamics is essential for sustainable use and ecological conservation amid rapid urbanisation. This study investigates how changes contribute to sequestration, offering insights support China's peaking (2030) neutrality (2060) goals. Using high-resolution data (30 m) from 2000 2020 the Chengdu Plain region, derived via Google Earth Engine Random Forest classification, Patch-generating Land Use Simulation (PLUS) model was applied predict under four scenarios:...

Soil organic carbon (SOC) plays a critical role in cycling and soil quality of agroecosystems. Understanding the factors influencing SOC main indicators for can help better management sustainable agriculture. In this study, we selected three upland fields (U1, U2 U3) paddy (P1, P2 P3) saline-alkali agroecosystems to study impacts physico-chemical properties (soil pH, exchangeable sodium percentage, electrical conductivity bulk density) enzyme activities amylase, invertase, catalase...

The response of resistant soil organic matter to temperature change is crucial for predicting climate impacts on C cycling in terrestrial ecosystems. However, the decomposition different carbon (SOC) fractions still under debate. To investigate whether labile and SOC components have sensitivities, samples were collected from three forest two grass land sites, along with a gradient latitude 18°40'to 43°17'N elevation 600 3510 m across China, incubated changing (from 12 32 oC) at least 260...

Soil organic carbon (SOC) mineralization (conversion of carbonaceous material to dioxide) plays a central role in global cycle. However, the effects SOC under different saline–alkali stress conditions are poorly understood. In order understand processes, four paddy fields with saline and alkali degrees were chosen as experimental samples soil CO2 emission fluxes at nine time steps whole simulation experiment observed. The physical chemical properties soils field compared for dynamic changes...

Abstract Sarcodon and Hydnellum are two ectomycorrhizal genera of important ecological economic value in Southwest China, they common the free markets this region. It was estimated that more than 1,500 tonnes them were sold as edible per year, but there little information about taxonomic placements these mushrooms markets. Traditional concepts have also been challenged recently, circumscription informally defined clade “ Neosarcodon ” remained unresolved. In present study, specimens...

The study of greenhouse gas emissions has become a global focus, but few studies have considered saline-alkali paddy fields. Gas samples and soil were collected during the green, tillering, booting, heading grain filling stages. emission fluxes CO2, CH4, N2O as well pH, soluble salt, available nitrogen, organic carbon contents detected to reveal (GHG) laws influence factors in Overall, GHG growing season increased, then decreased, increased again peaked at booting stage. CO2 CH4 observed...

Agricultural ecosystems are important contributors to atmospheric greenhouse gasses (GHGs); however, in situ winter emission data saline-alkali fields scarce. Gas samples were collected during different periods, from three rice (R1–R3) and maize (M1–M3) with soil pH levels salinity conditions. Carbon dioxide (CO2) emissions the decreased decreasing temperature freezing period increased rising thawing period, majority of CO2 occurring these two periods. Peaks methane (CH4) observed...

Soil samples from T (0~20 cm) and S (20~40 layers of four saline–alkali rice fields (R5, R15, R20, R35) with different reclamation years were selected to study the distribution soil aggregates contents readily oxidizable organic carbon (ROC), dissolved (DOC), microbial biomass (MBC), potentially mineralizable (PMC), (SOC). The effects large macroaggregate (>2 mm, LMA), small (0.25 2 SMA), microaggregate (<0.25 MA) particle size, layer, physicochemical properties on SOC fractions also...

Conservational management practices in grasslands have been considered one of the efficient options to enhance soil organic carbon (SOC) accumulation. However, SOC changes after conservational vary significantly under different grassland vegetation types and environmental conditions. At present, it is not clear how accumulation along profile if practice was adopted. In this study, we collected 663 paired observational data with without China from 176 published literatures that has both...

Soil organic carbon (SOC) and soil inorganic (SIC) play essential roles in cycling terrestrial ecosystems; however, the effects of crop cultivation on them are still poorly understood, especially alkali sodic soils widely distributed semiarid regions. Alkali from cornfields paddies with years 5, 15, 25 were analyzed here to assess response properties pools cultivation. pH exchangeable sodium percentages decrease accordance years, while enzyme activity (amylase, invertase, catalase) shows a...

The dehydrogenation of heavy paraffins is an important process for the production linear alkyl benzene. In this paper, a one-dimensional pseudohomogeneous model adiabatic radial reactor used to simulate industrial reactor. Combined with 17-lumped intrinsic reaction kinetics over NDC-10 (Pt/γ-Al2O3 type) catalyst, double-ring was deduced, and catalyst deactivation established as well. kinetic parameters were optimized by Sequential Quadratic Programming (SQP) method, estimated fitting trend...

The soil carbon pool management index is an important quantitative to characterize change.It of great significance study the change process easily oxidized organic in and can be used case saline-alkali fields western Jilin province understand evolution quality evaluate its effects during ecological restoration.The temporal spatial characteristics (SOC), readily (ROOC), non-readily (NROOC) activity (A), (AI), (CMI) (CPI) salinealkali paddy Jilin, China were analyzed.The results showed that...

The impact of land use and cover changes (LUCC) on global carbon cycle raises more serious concerns. Various methods were assessed to determine the influence LUCC soil organic (SOC). However, regional patterns causes terrestrial sources sinks remain uncertain. We analyze variation SOC stock in farming-pastoral ecotone relation over past century Zhenlai County located middle northeast China. This study analyzes characteristics during based extensive historical literatures remote sensing data....

The effects of freeze-thaw cycles on the physicochemical properties and carbon components in saline-alkali wetland soil were investigated.The results showed that water content bulk density increased, while pH decreased with increasing number freezethaw cycles.Organic was not significantly affected by cycles.In contrast, water-soluble organic (WSOC), microbial biomass (MBC), readily oxidized (ROOC) contents cycles.The various a common tendency to increase first then decrease steadily repeated...

Abstract Soil inorganic carbon (SIC) is the main existing form of soil pool in arid saline-alkali land, and its quantity distribution affects pattern accumulation storage. Previous studies on mostly focus organic (SOC), pay little attention to SIC. The purpose this study was investigate effect microorganisms enzymes transformation SOC SIC rhizosphere three maize fields (M1, M2 M3) paddy (R1, R2 R3) under stress, which a new research topic cycle region. results showed that root -...