As a new subject emerging with the green revolution, agroecology focuses on the total relationships between agricultural organisms and both their organic and inorganic environments, which is playing a key role in global sustainable development. From molecular to landscape scale, this paper reviews the achievements in non-point source pollution, highefficient use of agricultural resource, establishment of agro-ecosystem, agricultural landscape and its ecosystem service, and impact of global climate change on agriculture. A game-changing innovation of sustainable food production system and food chain management for human health are becoming the research hotspots in the future agroecology.

agroecology  /  ecological intensification  /  food production system  /  food chain  /  vertical farming