Soil Quality Assessment of Different Land Use Types Based on TOPSIS Method in Hilly Sandy Area of Loess Plateau, Northern China

An, Yida; Zhang, Lei; Wang, Qing; Han, Yunwei

doi:10.3390/ijerph192417059

Cited by 4 publications

(1 citation statement)

References 46 publications

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“…The entropy weight method is a technique used to objectively quantify and synthesize multi‐factor decision‐making (An et al., 2022) and the TOPSIS method is widely employed in land evaluation and does not have strict restrictions on data distribution or sample size (Zhang et al., 2022). The calculation process for the entropy weight TOPSIS method is as follows:…”

Section: Methodsmentioning

confidence: 99%

Soil health assessment of an acidic red soil agricultural area and its restoration with biochar soil conditioners

Li,

Jiang,

Lyu

2023

Soil Use and Management

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In light of growing concerns regarding food security and soil health, there is increasing emphasis on the assessment of soil health and efforts to improve or maintain the soil health of cultivated land. This case study Niutian Town in Jiangxi Province in southern China was selected as a typical red soil and a major grain‐producing area. This research involves an integrated evaluation model based on Entropy weight TOPSIS and emergy analysis to assess the soil health of cultivated land. An evaluation system was developed, comprising 31 indicators selected on the basis of resources and environments, with an emphasis on sensitive and promising microorganisms category indicators. Additionally, experiments were conducted to assess the ecological risk of soil pollution and develop novel soil conditioners. Our results indicate that Pb, Hg and Cd present a moderate ecological risk on 92.1% of the cultivated land. Furthermore, 56.8% of the cultivated land was ‘sub‐healthy’ or ‘unhealthy’. Biochar was found to be a soil conditioner with a good adsorption effect, with absorption rates reaching up to 99.9% and 88.3% for Pb and Cd, respectively. Additionally, g‐C3N4 was added to address pesticide contamination, which showed an adsorption rate of up to 75.2% for atrazine. This work develops a targeted remediation approach based on assessment results to address regional cropland soil health issues.

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Section: Methodsmentioning

confidence: 99%

Soil health assessment of an acidic red soil agricultural area and its restoration with biochar soil conditioners

Li,

Jiang,

Lyu

2023

Soil Use and Management

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Dispersal limitations prompt early vegetation aggregation in counter-seasonal reservoir riparian zones: A case study of Longkaikou Reservoir, China

Jiang,

Jia,

Xiao

2024

Ecological Indicators

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Effects of Nitrogen Deposition and Precipitation Patterns on Nitrogen Allocation of Mongolian Pine (Pinus sylvestris var. mongolica) on Sandy Land Using 15N Isotope

Zhao,

Cheng,

Gang

et al. 2024

Agriculture

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In the context of global climate change, atmospheric nitrogen deposition is increasing, and precipitation patterns are becoming more variable. This study examines the impact of these changes on nitrogen (N) allocation mechanisms in semi-arid region tree species using one-year-old Mongolian pine (Pinus sylvestris var. mongolica) seedlings. The seedlings were planted in soil collected from the Daqinggou Sandy Ecological Experiment Station (42°54′ N, 122°25′ E). Three moisture treatments were applied (WC (normal moisture, approximately 65% ± 2.5% of the field capacity), WI (30% increased moisture), and WD (30% decreased moisture)), as well as three nitrogen treatments (NC (no nitrogen), NL (5 g·m−2·y−1 nitrogen), and NH (10 g·m−2·y−1 nitrogen)). The seedlings were sprayed with a 15N-labeled CH4N2O solution (46% N, 15N abundance 10.14%) in a pot trial, with samples taken in August and October to measure N content and 15N abundance in the seedling organs and the soil. Parameters such as Ndff (%) (the percentage of nitrogen derived from fertilizer), nitrogen content of organs, 15N absorption in organs, and 15N distribution ratio were calculated. The results showed that 15N allocation in seedlings followed the trend leaves > stems > roots. Under moisture treatments, 15N allocation ratios in leaves, stems, and roots were 63.63–71.42%, 14.89–24.14%, and 12.23–14.88% under low nitrogen, and 62.63–77.83%, 13.35–22.90%, and 7.31–19.18% under high nitrogen. Significant correlations were found in 15N abundance among the seedling organs, with coefficients ranging from 0.97 to 1.00. The main effects of moisture and nitrogen, as well as their interaction, significantly impacted 15N abundance in the seedling organs. Changes in moisture levels affected the nitrogen absorption capacity of Mongolian pine. Increased moisture significantly enhanced 15N absorption in all organs, leading to 62.63–71.42% of 15N being allocated to the leaves, maintaining an appropriate proportion with the roots and stems. Nitrogen deposition altered the nitrogen allocation strategy among different organs of Mongolian pine. Under conditions of reduced moisture and low nitrogen, a greater proportion of nitrogen was captured by the roots and stems, with an allocation increase of approximately 4.98–5.77% compared to the control group, thereby mitigating the adverse effects of water deficiency. In conditions of reduced moisture and high nitrogen, the leaves, being active organs, accumulated more limiting elements, with an increase in nitrogen allocation of 2.03–8.07% compared to the control group. To achieve an optimal allocation strategy, moderate nitrogen deposition combined with increased moisture enhanced nitrogen uptake in Mongolian pine seedlings. This study provides scientific evidence for ecological restoration, wind erosion control, and agricultural and forestry management in semi-arid regions under the context of global climate change.

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Soil Quality Assessment of Different Land Use Types Based on TOPSIS Method in Hilly Sandy Area of Loess Plateau, Northern China

Cited by 4 publications

References 46 publications

Soil health assessment of an acidic red soil agricultural area and its restoration with biochar soil conditioners

Soil health assessment of an acidic red soil agricultural area and its restoration with biochar soil conditioners

Dispersal limitations prompt early vegetation aggregation in counter-seasonal reservoir riparian zones: A case study of Longkaikou Reservoir, China

Effects of Nitrogen Deposition and Precipitation Patterns on Nitrogen Allocation of Mongolian Pine (Pinus sylvestris var. mongolica) on Sandy Land Using 15N Isotope

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