Abstract: In last decade, great progress has been made in the teaching and research of agricultural ecology in China, but some obstacles still exist on how to understand agroecology.If we can recognize the social de-mand of agroecology and its position in agricultural science and pay attention to the description,assessment, experiment and analysis of agroecosystem models,the quantitative as well as qualitative aspects,the flowing as well as nonflowing elements of agroecosystem models and the variation patterns of modelalong environmental gradients, agroecology will have even greater development in China both in theoryand in application.

Key words: Jinghe watershed, ecosystem service, ecosystem service interaction, affecting factor, county level.