*Article* **Dynamics of Land and Water Resources and Utilization of Cultivated Land in the Yellow River Beach Area of China**

**Yadi Run 1,2, Mengdi Li 1,2, Yaochen Qin 1,2 , Zhifang Shi 1,2, Qian Li 1,2 and Yaoping Cui 1,2,3,\***


**Abstract:** Image analysis of the Yellow River beach area since 1987 provided land use and water body patterns to support effective agricultural and environmental management. Landsat and Sentinel-2A/B images, and data from the Third National Land Survey, were used to examine the water body and land use patterns. The continuous beach land since 1987 was calculated from annual vegetation and water body indexes while that of cultivated land was extracted from the Third National Land Survey. Object-Oriented Feature Extraction was used to extract staple crops. The results showed that 58.26% of the beach area was cultivated land. Continuous beach land covered an area of 1630.98 km<sup>2</sup> and was consisted of scattered patches that were unevenly distributed between the north and south banks of the Yellow River. The staple crop types in the beach area, winter wheat and summer corn accounted for 72.37% and 68.03% of the total cultivated land. Affected by the strategy on the Yellow River basin in China, as the ecological space and protection continue to increase, this study provides basic scientific references for the correct use of cultivated land resources and protection of the balance of soil and water resources dynamic utilization and balance of cultivated land protection and ecological protection.

**Keywords:** Yellow River; cultivated land; Object-Oriented Feature Extraction; wheat; corn
