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

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  • Li Xu

    (Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
    University of Chinese Academy of Sciences, Beijing 100049, China
    College of Resource and Environment Sciences, Xinjiang University, Urumqi 830046, China)

  • Hongru Du

    (Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Xiaolei Zhang

    (Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

Abstract

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.

Suggested Citation

  • Li Xu & Hongru Du & Xiaolei Zhang, 2019. "Spatial Distribution Characteristics of Soil Salinity and Moisture and Its Influence on Agricultural Irrigation in the Ili River Valley, China," Sustainability, MDPI, vol. 11(24), pages 1-17, December.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:24:p:7142-:d:297535
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    References listed on IDEAS

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    Cited by:

    1. Li Zhao & Wanjing Li & Guang Yang & Ke Yan & Xinlin He & Fadong Li & Yongli Gao & Lijun Tian, 2021. "Moisture, Temperature, and Salinity of a Typical Desert Plant ( Haloxylon ammodendron ) in an Arid Oasis of Northwest China," Sustainability, MDPI, vol. 13(4), pages 1-17, February.
    2. Abderraouf Benslama & Kamel Khanchoul & Fouzi Benbrahim & Sana Boubehziz & Faredj Chikhi & Jose Navarro-Pedreño, 2020. "Monitoring the Variations of Soil Salinity in a Palm Grove in Southern Algeria," Sustainability, MDPI, vol. 12(15), pages 1-19, July.
    3. Xuemei Jiang & Yuwei Ma & Gang Li & Wei Huang & Hongyan Zhao & Guangming Cao & Aiqin Wang, 2022. "Spatial Distribution Characteristics of Soil Salt Ions in Tumushuke City, Xinjiang," Sustainability, MDPI, vol. 14(24), pages 1-11, December.

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