Analyzing spatiotemporal characteristics of soil salinity in arid irrigated agro-ecosystems using integrated approaches

Ren, Dongyang; Bian, Wei; Xu, Xu; Engel, Bernard A.; Li, Guangyong; Huang, Quanzhong; Xiong, Yunwu; Huang, Guanhua

doi:10.1016/j.geoderma.2019.113935

Cited by 74 publications

(56 citation statements)

References 38 publications

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“…With a lack of timely precipitation under arid or semi-arid conditions, straw incorporation practices can improve soil water status and play an important role in crop growth [36]. However, the anaerobic decomposition of crop straw incorporated to the soil will release some toxic aliphatic aromatic acids and organic acids [40] and restrain crop growth in flooded soil [41]. Our study showed that the ALP treatment compared with the CK treatment improved biomass yields at the jointing-grain filling stage in 2011 and 2012 summer maize seasons.…”

Section: Biomass Yield and Water Use Efficiencymentioning

confidence: 99%

An Ammoniated Straw Incorporation Increased Biomass Production and Water Use Efficiency in an Annual Wheat-Maize Rotation System in Semi-Arid China

Zou

Feng

et al. 2020

Agronomy

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Water shortage and excessive chemical fertilizers application result in low soil water and nutrient availability and limit crop production in the Loess Plateau of Northwest China. Ammoniated straw incorporation with N fertilization may be an efficient strategy to maintain agricultural sustainability. However, the interactive effects of straw incorporation and N fertilizer on the biomass water use efficiency (WUE) in the winter wheat–summer maize rotation system remain unclear. A 3-year field experiment was conducted to evaluate the effects of combining ammoniated straw incorporation and N fertilizer on soil water, biomass yield and biomass water use efficiency (WUE) in an annual summer maize (Zea mays L.)—Winter wheat (Triticum aestivum L.) rotation system. There were three treatments: (i) long straw (5 cm) mulching with N fertilizer (CK), (ii) long straw with N fertilizer plowed into the soil (LP), and (iii) ammoniated long straw with N fertilizer plowed into the soil (ALP). Compared with the CK treatment, LP and ALP led to a similar soil water storage capacity. ALP improved summer maize biomass yield and winter wheat biomass yield at the jointing-maturity stage. ALP improved summer maize WUE at the ten-leaf collar-tasseling stage and winter wheat WUE from the tillering stage to the maturity stage. Also, the ALP treatment increased the total water use efficiency (TWUE) of winter wheat by 4.1–22.0%. Overall, ammoniated straw incorporation produced the most favorable biomass yield and WUE in the summer maize—Winter wheat rotation system in the Loess Plateau of China.

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Section: Biomass Yield and Water Use Efficiencymentioning

confidence: 99%

An Ammoniated Straw Incorporation Increased Biomass Production and Water Use Efficiency in an Annual Wheat-Maize Rotation System in Semi-Arid China

Zou

Feng

et al. 2020

Agronomy

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“…Ma, et al [38] indicated that the variation of soil salinity is controlled by topographic, climatic, and hydrological factors at the scale. Ren, et al [39] explored the correlation between soil salinity with groundwater, topography, irrigation, and other factors with three scales. The results showed that the soil salinity distribution was obviously affected by micro-topography and the field irrigation at the field scale, while it was main affected by topography and groundwater depth at the regional scale.…”

Section: Literature Reviewmentioning

confidence: 99%

Spatial Distribution Characteristics of Soil Salinity and Moisture and Its Influence on Agricultural Irrigation in the Ili River Valley, China

Zhang

2019

Sustainability

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Soil salinization is a global problem, which threatens agricultural productivity and sustainability, especially in arid and semi-arid regions. Soil salinity and moisture are important factors affecting agricultural production in arid regions. However, few studies have considered the influence of topographic factors on the spatial distribution patterns of soil salinity and moisture. This research aims to explore the spatial distribution characteristics and its influencing factors of soil salinity and moisture in the oasis farmland of arid areas. In this paper, GIS and geostatistics methods were applied to analyze the spatial distribution characteristics and variability of soil salinity and moisture, and then the corresponding proxy variables were used to quantitatively study the influence factors by using the geographical detector model. The results showed the coefficients of the variation of soil salinity and moisture to be 71.25% and 31.89%, respectively. There was moderate spatial autocorrelation of soil salinity and moisture. Soil salinity in the southwest was higher than in the northeast, and soil moisture in the northwest and southeast were lower than in the center and the northeast edge. The main influencing factors were available phosphorus, roughness of terrain, alkaline nitrogen, available potassium, and elevation. Combined action of topographic factors and soil nutrients has a major influence on the spatial distribution of soil salinity and moisture. Therefore, developing a suitable fertilizer regime under different topographic conditions could be an effective way to promote the sustainability of oasis agriculture in arid areas.

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“…Salinity mapping can objectively characterize salinity distribution, but reference to soil distribution mapping alone is of limited assistance to decision makers [15]. When assessing the capacity of agricultural practices and environmental impacts, the comprehensive consideration of saline soil formation mechanisms and influencing factors is more conducive to enhancing the sustainable use of natural resources [16].…”

Section: Introductionmentioning

confidence: 99%

“…As a result, many researchers have proposed multiple indicators to quantify the risk of salinization [17,18], providing a basis for evaluating the possible impact of factors with uncertainty on the soil salinization process. Ren et al [15] analyzed the spatial and temporal characteristics and influencing factors of soil salinity at three scales based on sampling data, remote sensing, geostatistical analysis, and model simulations. They found that, at the regional scale, the distribution of soil salinity is mainly influenced by topography and groundwater depth.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Evaluation of Spatial and Temporal Variation of Soil Salinization Risk Using GIS-Based Geostatistical Method

Wang

Zhang

et al. 2020

Remote Sensing

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Soil salinization is one of the environmental threats affecting the sustainable development of arid oases in the northwest of China. Thus, it is necessary to assess the risk of soil salinity and analyze spatial and temporal changes. The objective of this paper is to develop a temporal and spatial soil salinity risk assessment method based on an integrated scoring method by combining the advantages of remote sensing and GIS technology. Based on correlation coefficient analysis to determine the weights of risk evaluation factors, a comprehensive scoring system for the risk of salinity in the dry and wet seasons was constructed for the Ebinur Lake Wetland National Nature Reserve (ELWNNR), and the risk of spatial variation of soil salinity in the study area was analyzed in the dry and wet seasons. The results show the following: (1) The risk of soil salinity during the wet season is mainly influenced by the plant senescence reflectance index (PSRI), deep soil water content (D_wat), and the effect of shallow soil salinity (SH_sal). The risk of soil salinity during the dry season is mainly influenced by shallow soil salinity (SH_sal), land use and land cover change (LUCC), and deep soil moisture content (D_wat). (2) The wet season was found to have a high risk of salinization, which is mainly characterized by moderate, high, and very high risks. However, in the dry season, the risk of salinity is mainly characterized by low and moderate risk of salinity. (3) In the ELWNNR, as the wet season changes to dry season (from May to August), moderate-risk area in the wet season easily shifts to low risk and risk-free, and the area of high risk in the wet season easily shifts to moderate risk. In general, the overall change in salinity risk of the ELWNNR showed a significant relationship with changes in lake water volume, indicating that changes in water volume play an important role in the risk of soil salinity occurrence. Ideally, the quantitative analysis of salinity risk proposed in this study, which takes into account temporal and spatial variations, can help decision makers to propose more targeted soil management options.

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Analyzing spatiotemporal characteristics of soil salinity in arid irrigated agro-ecosystems using integrated approaches

Cited by 74 publications

References 38 publications

An Ammoniated Straw Incorporation Increased Biomass Production and Water Use Efficiency in an Annual Wheat-Maize Rotation System in Semi-Arid China

An Ammoniated Straw Incorporation Increased Biomass Production and Water Use Efficiency in an Annual Wheat-Maize Rotation System in Semi-Arid China

Spatial Distribution Characteristics of Soil Salinity and Moisture and Its Influence on Agricultural Irrigation in the Ili River Valley, China

Quantitative Evaluation of Spatial and Temporal Variation of Soil Salinization Risk Using GIS-Based Geostatistical Method

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