我国农业生态系统的现状、功能与可持续发展分析

ANALYSIS ON THE PRESENT STATUS, FUNCTION AND SUSTAINABLE DEVELOPMENT OF AGRICULTURE ECOLOGICAL SYSTEM OF CHINA

关键词:  农业生态系统  现状  功能  可持续利用方式

Key words:  agriculture ecological system  present status  function  sustainable utilization method

摘要:

伴随着人类社会对食物的多样化需求，农业生态系统的自然循环方式正在被打破，在系统物质输入和输出水平不断增加、能量转化效率逐渐提高的同时，系统的波动性、脆弱性随之扩大，系统的稳定性、抗逆性也因此下降。未来要获得可持续的农业生态系统服务功能和人类福利，就必须在短期、中期和长期的时间尺度上，对人类活动与农业生态系统变化及其两者之间的关系进行全面的了解，实行可持续利用方式，在不同的系统层级上进行合理的管理。

Abstract:

The natural cycling way of agriculture ecological system is being breaking along with the diversi fying requirements of mankind for food. At the same time when the level of material import and export is continuously increasing and the energy transfer efficiency is gradually improved, the fluctuation and fragility of the system is expanding. Thus the stability and resistance of the system is decreasing. In the future days, in order to obtain the service function of sustainable agriculture ecological system and the mankind welfare, we must completely understand the relations between human activities and changes of agriculture ecological system for short term, mid term and long term, so as to carry out the method of sustainable utilization and rational administration at different system levels.