Appropriateness Evaluation and Impact Factor Identification of Dongting Lake Under the Concept of “three living”

Abstract

The "three living" space is an important guideline for the rational optimization of national land space in China. In the process of implementing the project of returning fields to lakes to solve the shrinking surface of Dongting Lake and the various ecological problems arising from it, livelihood issues such as land use conflicts have emerged. In order to balance the relationship between people and lake under the policy, the paper starts from the "three living" space, and evaluates the appropriateness of the Dongting Lake by constructing the index system of the "three living" functional space of the Dongting Lake and combining Arcgis 10.7 software to superimpose the index factors to evaluate the spatial function of the Dongting Lake. The spatial variability of the index factors is also analyzed by geographic probes to reveal the suitability characteristics of the returned land to the lake. Based on the results of the study, it can reduce the conflict of land use in the return of Dongting Lake, avoid the loss of production and living caused by the return of land to the lake to the greatest extent, and enhance the ecological benefits of the return of land to the lake, provide a reference for the implementation of the Dongting Lake return of land to the lake project.