A functionally and spatially coherent agricultural unit. The analysis of agroecosystems considers all the activities of the agroecosystem including traditional inputs and outputs and, in addition, the impact upon the wider environment of the system.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。