Quantitative assessment of soil quality indices for urban croplands in a calcareous semi-arid ecosystem

Mamehpour, N.; Rezapour, Salar; Ghaemian, Naser

doi:10.1016/j.geoderma.2020.114781

Cited by 55 publications

(35 citation statements)

References 52 publications

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“…Studies have shown that heavy metals, such as lead and chromium, can lead to the degradation of cultivated land quality [71]. In addition, metal elements also influence microbial activity in soil [58] and soil organisms and their processes have important impacts on soil health [72].…”

Section: Discussionmentioning

confidence: 99%

“…The infrastructure associated with cultivated land also tends to be stable, but the organisms or animals in a soil can indirectly restrict crop yields by changing the physical and chemical properties of the soil. Furthermore, although heavy metal elements do not reduce crop yields within a limited concentration range, they can have an impact on crop quality and harm human health [58], which would restrict the sustainable use of cultivated land. This study regarded relatively stable soil fertility as the core quality of the cultivated land in the experimental area, engineering quality as its basic quality, and environmental and ecological quality as its restrictive qualities.…”

Section: Methods Used To Evaluate Clqmentioning

confidence: 99%

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Impacts of Farming Layer Constructions on Cultivated Land Quality under the Cultivated Land Balance Policy

Kang

Zhao

et al. 2021

Agronomy

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Cultivated Land Balance Policy (CLBP) has led to the “better land occupied and worse land supplemented” program. At the same time, the current field-scale cultivated land quality (CLQ) evaluation cannot meet the work requirements of the CLBP. To this end, this study selected 24 newly added farmland in Fuping County and performed eight different high quality farming layer construction experiments to improve the CLQ. A new comprehensive model was constructed on a field scale to evaluate the CLQ using different tests from multi-dimensional perspectives of soil fertility, engineering, environment, and ecology, and to determine the best test mode. The results showed that after the test, around 62% of the cultivated land improved by one level, and the average cultivated land quality level and quality index of the test area increased by 0.63 and 30.63, respectively. The treatment of “woody peat + rotten crop straw + biostimulation regulator II + conventional fertilization” had the best effect on the improvement of organic matter, soil aggregates, and soil microbial activity, and was the best treatment method. In general, application of soil amendments, such as woody peat when constructing high quality farmland, could quickly improve CLQ, and field-scale CLQ evaluation model constructed from a multi-dimensional perspective could accurately assess the true quality of farmland and allow managers to improve and manage arable land resources under CLBP.

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Section: Discussionmentioning

confidence: 99%

Section: Methods Used To Evaluate Clqmentioning

confidence: 99%

Impacts of Farming Layer Constructions on Cultivated Land Quality under the Cultivated Land Balance Policy

Kang

Zhao

et al. 2021

Agronomy

View full text Add to dashboard Cite

show abstract

“…This study used the linear scoring method and the nonlinear scoring method [28,43] for both the total data set (TDS) and the minimum data set (MDS) to calculate the SQI to evaluate soil quality [44]. We first performed a Pearson correlation analysis on the relationship between soil attributes and crop yield (Table 1).…”

Section: Soil Quality Assessmentmentioning

confidence: 99%

“…Currently, many methods and tools are used in soil quality assessment, such as Test Kit cards, soil management assessment frameworks, and the SQI. Due to the complexity and variability of the soil system, there is no unified soil quality assessment method [26][27][28]. Among them, the SQI is the most widely used method because it can quantitatively analyze soil quality flexibly and integrate the soil's physical, chemical, and biological properties [29].…”

Section: Introductionmentioning

confidence: 99%

Manure Application Is the Key to Improving Soil Quality of New Terraces

et al. 2022

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Building level terraces is a crucial strategy for agriculture development in mountainous areas. There have been many studies on improving the soil quality of terraces, but the main factors involved are still unclear. We conducted an 18-year long-term experiment on a newly built terrace with four fertilization treatments: applied mineral nitrogen and phosphorus fertilizer (NP), applied sheep manure (M), applied sheep manure combined with mineral nitrogen and phosphorus fertilizer (MNP), and an unfertilized control (CK). A soil quality index (SQI) was used to evaluate the dynamic evolution of soil quality in the terrace for these fertilization treatments, and the relationship between soil quality and crop yield was investigated. A total data set (TDS) and a minimum data set (MDS) were used to calculate the SQIs according to the linear scoring method and the nonlinear scoring method of soil indicators, respectively. The results showed that the SQI for all treatments increased over time, and both the SQI and crop yield were significantly increased by fertilization treatments. The SQI of all three fertilized treatments in the sixth rotation cycle increased by 38–313% compared to the control in the first rotation cycle (3 years). There was no significant difference in the SQI between the M and MNP, but it was significantly higher than for both the NP and CK. During the 18 year experimental period, the SQI for the M and MNP treatments showed an upward trend, while it tended to be stable after initially increasing for the NP and CK treatments. For each treatment, the SQI calculated by the linear and nonlinear scoring methods using the MDS and TDS were all significantly positively correlated, and were also significantly positively correlated with crop yield. Overall, the soil quality in the terrace was increased by fertilization; however, the application of manure was the key to a rapid increase in soil quality, and the SQI measurements demonstrated a clear link between the soil quality of the terrace and crop yield.

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“…Simultaneously, many scholars have also constructed a variety of evaluation indicator systems with different functions and purposes. The evaluation indicator systems developed in these studies are mainly characterized by soil quality/fertility [27][28][29], natural quality/conditions [30][31][32], utilization conditions [12,33], productivity capacity [15,21,34], ecological environment [10,18,19], and economic level [12]. However, the quantification methods of these indicators in existing studies were not suitable for regional scales or cannot reflect the spatial details of CLQ.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Patterns of Cultivated Land Quality Integrated with Multi-Source Remote Sensing: A Case Study of Guangzhou, China

et al. 2022

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Scientifically revealing the spatiotemporal patterns of cultivated land quality (CLQ) is crucial for increasing food production and achieving United Nations Sustainable Development Goal (SDG) 2: Zero Hunger. Although studies on the evaluation of CLQ have been conducted, an effective evaluation system that is suitable for the macro-regional scale has not yet been developed. In this study, we first defined the CLQ from four aspects: soil fertility, natural conditions, construction level, and cultivated land productivity. Then, eight indicators were selected by integrating multi-source remote sensing data to create a new CLQ evaluation system. We assessed the spatiotemporal patterns of CLQ in Guangzhou, China, from 2010 to 2018. In addition, we identified the main factors affecting the improvement of CLQ. The results showed that the CLQ continuously improved in Guangzhou from 2010 to 2018. The area of high-quality cultivated land increased by 13.7%, which was mainly distributed in the traditional agricultural areas in the northern and eastern regions of Guangzhou. The areas of medium- and low-quality cultivated land decreased by 8.1% and 5.6%, respectively, which were scattered throughout the whole study area. The soil fertility and high productivity capacity were the main obstacle factors that affected the improvement of CLQ. Simultaneously, the obstacle degree of stable productivity capacity gradually increased during the study period. Therefore, the targeted improvement measures could be put forward by applying biofertilizers, strengthening crop management and constructing well-facilitated farmland. The new CLQ evaluation system we proposed is particularly practical at the macro-regional scale, and the results provided targeted guidance for decision makers to improve CLQ and promote food security.

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Quantitative assessment of soil quality indices for urban croplands in a calcareous semi-arid ecosystem

Cited by 55 publications

References 52 publications

Impacts of Farming Layer Constructions on Cultivated Land Quality under the Cultivated Land Balance Policy

Impacts of Farming Layer Constructions on Cultivated Land Quality under the Cultivated Land Balance Policy

Manure Application Is the Key to Improving Soil Quality of New Terraces

Spatiotemporal Patterns of Cultivated Land Quality Integrated with Multi-Source Remote Sensing: A Case Study of Guangzhou, China

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