Quantitative assessment of soil productivity and predicted impacts of water erosion in the black soil region of northeastern China

Gu, Zhijia; Xie, Yonghong; Gao, Yuan; Ren, Xiaodan; Cheng, Congcong; Wang, Sichu

doi:10.1016/j.scitotenv.2018.05.061

Cited by 116 publications

(55 citation statements)

References 35 publications

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“…These results are in line with previous studies [39,40]. It has been proposed that the chernozem soils had higher SOM abundance than the cinnamon, red and paddy soils on a countrywide scale [41], which was also observed in the present study. Lower input of organic matter and stronger decomposition of SOM may contribute to the lower SOM in the cropped soils than in the natural soils (Table 1) [42].…”

Section: Effect Of Soil Types On the Spectral Characteristics Of Soilsupporting

confidence: 94%

Compositional and chemical characteristics of dissolved organic matter in various types of cropped and natural Chinese soils

Wang

et al. 2019

Chem. Biol. Technol. Agric.

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Background: Exploration of composition and chemical characteristics of soil dissolved organic matter (DOM) is significant to understand its biogeochemical role in terrestrial ecosystems. A total of 43 cropped and 16 natural soils (0-20 cm) under four soil types (cinnamon, chernozem, red and paddy soils) across China were collected to investigate the spectral characteristics of DOM using UV-Vis and 3D-EEM spectroscopy. Results: The chernozem soils exhibited the highest aromaticity and humification degree among the four soil types. Ranges of biological index (BIX, 0.53-1.17) and fluorescence index (FI, 1.55-2.10) were found in the investigated DOM, showing joint contribution from allochthonous and autochthonous sources. Higher BIX and FI in the DOM of the paddy and red soils indicated a greater reliance on autochthonous sources for these two soil types. The cropped soils showed no significant differences in chemical characteristics and sources from the natural soils for the cinnamon, chernozem and red soils. UVA (16.2-47.9%) and UVC fulvic-like substances (15.4-40.5%) were the prevailing DOM components, which were highest in the chernozem soils. Additionally, the cropped soils had a higher proportion of humic-like substances than the natural soils in the DOM. Conclusions: Both soil type and land-use strongly affected the chemical characteristics of soil DOM, but only soil type had an impact on the DOM composition for the collected soils. These findings may contribute to the prediction of the biochemical behavior of soil DOM under different soil types and land-uses in terrestrial ecosystems.

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Section: Effect Of Soil Types On the Spectral Characteristics Of Soilsupporting

confidence: 94%

Compositional and chemical characteristics of dissolved organic matter in various types of cropped and natural Chinese soils

Wang

et al. 2019

Chem. Biol. Technol. Agric.

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“…On the other hand, the productivity of soils not only related to its pedoginic and physicochemical characters; but, several factors (e.g. land use policies, soil tillage, manures and fertilizers application, irrigation as well as soil and water conservation against degradation potentials (Gu et al, 2018). Consequently, research studies onto soil productivity deterioration have attracted research attention, especially under climatic change threats.…”

Section: Introductionmentioning

confidence: 99%

Tracking Changes in Soil Fertility at North Nile Delta, Egypt Using GIS Techniques

El-Seedy

Saeed

2019

Journal of Soil Sciences and Agricultural Engineering

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Tracking changes in soil fertility is important to make essential decisions and strategies to achieve more sustainable agricultural systems. The main objective of this research was to evaluate and tracking changes of soil fertility status after 9 years ago from its first time of evaluation in the same area. The study area is situated at the latitude 31 • 14΄ to 31 • 29 E and 31 • 14΄ to 31 • 30 N (total area about 705 km 2) in North Nile Delta soils using GIS techniques to prepare the soil fertility status map. Accordingly, 16 soil samples were collected based on the variability of land at a depth of 0-20 cm according to the previous study. The soil samples were analyzed for their some physiochemical properties and fertility properties. Evaluation of soil fertility and calculation of Fertility Index was performed using the Agriculture Land Evaluation System for arid and semi-arid regions (ASLE). The products of data of studied area were classified into four classes Fair, Poor, Very poor and Non agriculture according to fertility index, while studied previous was classified into three classes Fair, Poor, Very poor according to FI. Fertility index maps illustrate that some of the studied area have an increase in soil fertility and others have decline in soil fertility comparing with the previous study.

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“…Most research in China has looked at the conceptual models and theoretical systems in cultivated land productivity [19][20][21], mainly at the macro or meso spatial scales [22][23][24][25]. Researchers have calculated cultivated land productivity and have analyzed the differences in time and space and the influencing factors [25] based on the results of grading agricultural land [26], evaluating cultivated land quality [27] and testing regional yields [28] through the potential decay method, improved agricultural ecological zoning and the agro-ecological zone model [24,29,30], or building a new cultivated land productivity evaluation system [31]. However, most of these calculations of cultivated land productivity that are based on grading agricultural land are deficient in their evaluation because of a lack of indexes reflecting the technical level of regional agriculture.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Cultivated Land Productivity and Its Spatial Differentiation in Dongting Lake Region: A Case Study of Yuanjiang City, Hunan Province

Zhao

Yong

et al. 2018

Sustainability

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Cultivated land is an important carrier of grain production, and scientific assessing of cultivated land productivity is of great significance to ensure food security. This paper assessed the overall productivity of cultivated land in Yuanjiang city from the perspectives of quantitative structure, spatial distribution and correlation with national land use. We applied statistical and GIS (geographic information system) spatial analysis methods to 16 secondary indicators of productivity. The results showed that the productivity index of cultivated land ranged from 1642.79 to 4140.09, concentrated in classes 2–6, among the most productive of 15 classes in total. The cultivated productivity indexes of most towns showed quantitative structural patterns of “inverted pyramid” and “dumbbell” types. Cultivated lands with high productivity showed a spatial distribution that decreased from the north to the south and increased from the center to the periphery. The spatial distribution of the higher-level classes in the cultivated land productivity index and the national cultivated land use index was similar. The correlation coefficient between the indexes for cultivated land productivity and the annual standard crop yield was 0.8817, implying that the index reflected local grain production capacity very well. In general, the research offered a reference and technical support for the sustainable use of cultivated land resources and enhanced regional cultivated land production capacity.

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Quantitative assessment of soil productivity and predicted impacts of water erosion in the black soil region of northeastern China

Cited by 116 publications

References 35 publications

Compositional and chemical characteristics of dissolved organic matter in various types of cropped and natural Chinese soils

Compositional and chemical characteristics of dissolved organic matter in various types of cropped and natural Chinese soils

Tracking Changes in Soil Fertility at North Nile Delta, Egypt Using GIS Techniques

Assessment of Cultivated Land Productivity and Its Spatial Differentiation in Dongting Lake Region: A Case Study of Yuanjiang City, Hunan Province

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