Effects of land use types and environmental factors on spatial distribution of soil total nitrogen in a coalfield on the Loess Plateau, China

Wang, Ziguan; Wang, Guangcai; Zhang, Guanghui; Wang, Haibo; Ren, Tingyu

doi:10.1016/j.still.2021.105027

Cited by 24 publications

(14 citation statements)

References 46 publications

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“…Soil total carbon (TC) was determined by C analyzer (Vario TOC, Elementar); soil TN was determined by automatic Kjeldahl N analyzer (Z. Wang et al., 2021); soil TP was determined by concentrated sulfuric acid‐perchloric acid digestion with molybdenum (Mo) antimony anticolorimetric method. Soil ammonium nitrogen (NH 4 + –N) and nitrate nitrogen (NO 3 − –N): 0.5 M K 2 SO 4 extraction followed by continuous flow analyzer (Autoanalyzer 3, Bran Luebbe).…”

Section: Methodsmentioning

confidence: 99%

Long‐term ground cover affects soil bacterial community and carbon metabolism in the Loess Plateau, China

Zhang

Wang

et al. 2022

Soil Science Soc of Amer J

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Farmland mulching can maintain soil nutrients, which plays a positive role in agricultural planting in the arid area. However, the composition of the soil microbial community and the C cycle involved is unclear under farmland mulching. Based on the Changwu Agro-Ecological Experiment Station, this study set up a long-term positioning experiment to explore the effect on soil bacterial community structure and C metabolism capacity. In this study, we include five treatments: control uncovered (CK), plastic film mulching (PF), high amount of straw mulching carried out in July, August, and September every year (St 90 ), low amount of straw mulch throughout the growth period (S 45 ), and high amount of straw cover throughout the growth period (S 90 ). We combined Illumina MiSeq sequencing and Biolog-ECO technology to analyze the functional characterization of soil bacterial community composition in terms of C source metabolism. The results indicated that the soil bacteria showed a high degree of epistatic clustering, and the operational taxonomic unit numbers of soil bacteria decrease as St 90 , S 45 , PF, CK, and S 90 . Redundancy analysis showed that soil available P, NH 4 + -N, soil moisture content were the main environmental factors affecting bacterial community composition. Proteobacteria, Acidobacteria, and Actinobacteria are the main dominant flora in this area. Soil bacterial C metabolism was highest under PF treatment. Structural equation modeling (SEM) shows that surface cover has direct and indirect effects on bacterial C metabolism capacity and diversity through soil physicochemical properties. Reasonable mulching methods have a positive effect on the sustainable development of agro-ecosystems in arid areas. Abbreviations: AP, available phosphorus; AWCD, average well color development; CK, control uncovered; MC, soil moisture content; MFC, soil maximum water holding capacity in the field; NH 4 + -N, soil ammonium nitrogen; NO 3 − -N, nitrate-nitrogen; OTU, operational taxonomic units; PF, plastic film mulch; RDA, redundancy analysis; S 45 , low amount of straw mulch throughout the growth period; S 90 , high amount of straw cover throughout the growth period; SEM, structural equation modeling; SOC, soil organic carbon; St 90 , high amount of straw mulching is carried out in July, August, and September; TC, total carbon; TN, total nitrogen; TP, total phosphorus.

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Section: Methodsmentioning

confidence: 99%

Long‐term ground cover affects soil bacterial community and carbon metabolism in the Loess Plateau, China

Zhang

Wang

et al. 2022

Soil Science Soc of Amer J

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“…Soil nutrients are widely used to study and analyze ecosystem degradation [19]. External environment can influence spatial variability of soil nutrients [20,21]. Soil nutrients are important for food security and sustainable development [22,23].…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Spatial Distribution and Influential Factors of Soil Total Nitrogen in a Coal Mining Subsidence Area

et al. 2022

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Soil nitrogen is very important for crop growth and development. However, the factors affecting the three-dimensional spatial distribution of soil total nitrogen (TN), particularly in coal mining subsidence areas, are unclear. In this study, Markov geostatistics was used to analyse the three-dimensional spatial distribution characteristics and influential factors of TN by examining 180 soil samples from the Zhaogu mine in China. The results showed that the TN content was significantly different at different soil depths (0–20, 20–40, 40–60 cm) and decreased with increasing soil depth. The variation coefficient of the TN content decreased gradually from top to bottom, ranging from 18.18 to 25.62%. In addition, the TN content was greatly affected by mining subsidence, rainfall, irrigation, fertilization and management mode. The factors that influenced the TN content also varied across different slope positions. The TN content of the upslope was the highest, and the TN content of the middle slope was the lowest. These results can provide research ideas and technical countermeasures for ecological environment improvement and sustainable land development in coal mining subsidence areas.

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“…Besides, the soil remained exposed for a period after harvest, resulting in damage to the structure of the soil aggregates. This also indicates that the traditional tillage methods promote the release and leaching of soil N (Wang et al, 2009(Wang et al, , 2021Yuan et al, 2019). Woodland, with greater input from litter decomposition, retains soil nutrients more effectively, resulting in higher SOC and soil nutrients in the surface soil compared to farmland (Cole, 1995).…”

Section: Spatial Distribution Of Som and Soil Nutrients In A Watershedmentioning

confidence: 99%

Spatial heterogeneity of soil organic carbon and soil nutrients and their controlling factors in a small watershed in Northeast China

Lixin,

Zhuoxin,

Mingming

et al. 2023

Soil Use and Management

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Understanding the spatial distribution of soil organic carbon (SOC) and soil nutrients is crucial for optimizing land management in watersheds. This study explored the spatial distribution of SOC, total nitrogen (TN), and total phosphorus (TP) in topsoil (0‐20 cm) at a hilly small watershed site in Northeast China, and identified the controlling factors. The Gaussian mixture model optimally described SOC and TN with the ratio of nugget to sill variance (C0/ (C+C0)) indicating moderate spatial dependence for SOC (63.7%) and TN (59.3%). TP was best modelled by the spherical model and demonstrated weak spatial autocorrelation and strong human influence, with a nugget to sill variance of 0.841. Land use significantly affected SOC, TN, and TP contents, with the highest values recorded in woodland, followed by farmland and shrubland. Soil properties including bulk density (BD), gravel content (GC), moisture content (MC), soil porosity (SP), and the mean weight diameter (MWD) of water‐stable aggregates significantly correlated with SOC and TN content, but not with TP. Redundancy analysis revealed that soil properties (BD, GC, and SP), topography (slope and aspect), and gully erosion contributed 55.7%, 24.7%, and 4.3% of the spatial variation in SOC, TN, and TP, respectively. Hence, these are the dominant factors shaping the spatial variation of SOC and soil nutrients at the site. These results can aid the further development of optimized land management strategies.

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Effects of land use types and environmental factors on spatial distribution of soil total nitrogen in a coalfield on the Loess Plateau, China

Cited by 24 publications

References 46 publications

Long‐term ground cover affects soil bacterial community and carbon metabolism in the Loess Plateau, China

Long‐term ground cover affects soil bacterial community and carbon metabolism in the Loess Plateau, China

Three-Dimensional Spatial Distribution and Influential Factors of Soil Total Nitrogen in a Coal Mining Subsidence Area

Spatial heterogeneity of soil organic carbon and soil nutrients and their controlling factors in a small watershed in Northeast China

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