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It is of great significance to strengthen the research on the relationship between land use/cover and environmental sustainable development. Taking Hekou District in the Yellow River Delta as an example, based on “3S” technology, using the methods of field investigation, sampling test and statistical analysis, combining remote sensing classification with spatial interpolation, the land information is accurately extracted, and the land salinization and utilization characteristics and their matching relationship are analyzed. The spatial characteristics of land use in Hekou District are obvious. Cultivated land is concentrated in the southwest and southeast, a little in the middle. Aquaculture water surface and saline wasteland are concentrated in the northeast and northwest coastal area. Construction land is concentrated in the south, and salt pan fields are mainly distributed in the northwest. The spatial distribution of soil salinization in Hekou District increased from southwest to east and north in spring, showing strong variability. The spatial distribution and quantity of land use and salinization are in the relationship of "overall matching and partial mismatch". Land use should be adjusted according to the characteristics of salinization and land demand. Hekou District should strengthen the protection of cultivated land, develop characteristic gardens and animal husbandry, explore the multi-functional utilization of saline land resources, and promote regional ecological improvement and sustainable development.

Characteristics and sustainability of land salinization and utilization in the Yellow River Delta