“仓廪实，天下安”，耕地保护是“国之大者”。针对现有耕地保护工作存在的监测不及时、管理手段单一、责任落实难等问题，按照打造“前端‘天—空—地—网’智能发现+中端应用软件精准预警+后端指挥中心自动派单”的建设思路，研究了基于多源数据的耕地保护监测预警关键技术，构建了铁塔视频“先吹哨”、卫星影像“月兜底”、无人机“重点巡”、网格员“智慧核”的全方位、全天候、立体化协同感知体系，研发了耕地保护监测预警系统，并在武汉市耕地保护管理工作中得到了应用实践，推动了耕地保护工作方式从被动整改到主动发现再到源头管控的转变。

“Only when granaries are full can the country be secure.” The protection of cultivated land is a “national priority”. Aiming at the problems in the current cultivated land protection work, such as untimely monitoring, simplistic management methods, and difficulties in implementing responsibilities, in accordance with the construction concept of creating a system of “intelligent discovery through the front-end Air-Space-Surface-Network+precise early warning through mid-end application software+automatic order dispatching by the back-end command center”, we studied the key technologies of cultivated land protection monitoring and early warning based on multi-source data, established a comprehensive, all-weather, and three-dimensional collaborative sensing system, featuring iron tower videos for “first alerts”, satellite images for “monthly coverage”, UAVs for “focused patrols”, and grid managers for “intelligent verification”, and developed a monitoring and early warning system for cultivated land protection and applied in the management of cultivated land protection in Wuhan City, which could promote the transformation of work mode of cultivated land protection from passive rectification to proactive detection and further to source control.