Spatial Distribution of Soil Water and Salt in a Slightly Salinized Farmland

Zengming Ke, Xiaoli Liu, Lihui Ma (), Feng Jiao and Zhanli Wang
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Zengming Ke: College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, China
Xiaoli Liu: Institute of Water Saving Agriculture in Arid Areas of China, Northwest A&F University, Xianyang 712100, China
Lihui Ma: Institute of Water Saving Agriculture in Arid Areas of China, Northwest A&F University, Xianyang 712100, China
Feng Jiao: State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Xianyang 712100, China
Zhanli Wang: State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Xianyang 712100, China

Sustainability, 2023, vol. 15, issue 8, 1-15

Abstract: It is important to study the mechanisms associated with the spatial distribution of soil water and salt to control soil salinization and promote the sustainable development of farmland. Six plots in a slight farmland with different spatial locations were selected to determine the spatial distribution of soil water and salt and their correlation using the multifractal method. Each plot was applied using the grid method (15 m × 15 m, 3600 m 2 ), where each sampling site was located at the center point coordinates. The 0–20 and 20–40 cm soil layers were sampled.The spatial variability of the soil water and salt were 1.41 and 1.73 fold higher in the upstream farmland than in the downstream farmland. The spatial variability of the soil water and salt was significantly correlated. In addition, the spatial variability of the soil water and salt significantly correlated in the 0–20 and 20–40 cm layers. The spatial distribution of both soil water and salt in the entire soil layer had similar characteristics at this sampling scale. Our results provide a theoretical basis to study the interactive mechanisms associated with the distribution of soil water and salt.

Keywords: coupling; multifractal method; soil salt; soil water; spatial distribution (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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