Abstract: The construction of high-standard farmland is the foundation for guaranteeing national food security and the prerequisite for realizing grain storage on the land. Taking Yuanyang County of Henan Province as the research area, and the basic farmland patches as the evaluation units, the ecological security and food security of the basic farmland were both evaluated. According to the evaluation results synthesized by the two-dimensional correlation matrix, the construction zoning of high-standard farmland in Yuanyang County is proposed. It indicates that the ecological safety levels in different places were different, with higher levels in the eastern and western towns than those in the central region. The food security of basic farmland varied significantly in different towns, with high in surrounding towns, and low in the middle towns. The second and third levels of food security were the main ones. The food security levels in the eastern towns were the best, those in the western were general, but those in the central regions were poor. The high-standard farmland in Yuanyang County could been mainly divided into priority construction area, subsequent construction area, ordinary construction area and reserve construction area. Their area was 7 302.04, 14 755.29, 24 473.36 and 21 889.54 hm², respectively. The above results can provide guidance to the area division and the construction sequence of high-standard farmland in Yuanyang County in a certain extent, and can also provide a reference for the construction of high-standard farmland in other similar areas.

Key words: high-standard farmland, ecological security assessment, food security assessment, construction zoning