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There are some problems such as insufficient ecological space in the floodplain of the lower Yellow River. Based on the analysis of the function orientation of the floodplain, this paper constructs the comprehensive evaluation index matrix of the ecological spatial layout. Taking the floodplain of the plain demonstration area as a typical example, the regional flood control safety conditions, agricultural development conditions, socioeconomic conditions, and river ecological conditions are comprehensively evaluated. Based on the comprehensive analysis of the key conditions of town, agriculture, and ecology, the suitable areas for town construction, agricultural production, and ecological protection are defined respectively. Combined with the flood control safety requirements of the floodplain, the ecological space layout of the floodplain is optimized to propose the Yellow River new ideas for the optimization of the ecological spatial pattern of the downstream floodplain.

Study on the evaluation and optimization of ecological spatial layout of the lower Yellow River floodplain