王东沟农业生态系统能流分析

Analysis on the Energy Flow of Agro-ecosystem in Wangdong Experimental and Demonstrational Area(EDA)

长武县王东沟是一个人为干扰强度很大的农业生态系统。近几年科技投入的增加，改善了系统内物质能量循环状况，人工辅助能输入量高于全国平均水平，但远低于上海经济发达地区，其中工业辅助能输入比例与上海相近，而绝对数差距大，正处在人工辅助能迅速增长阶段。总能输出量较大，但还不能满足农民高水平生活需要。还应继续增加投入、科学管理、建成为人类提供合理的食物结构，生态环境良好的理想的农业生态系统。

The agro-ecosystem in wangdong EDA changwu county,has been strongy disturbed byhuman activities,Its energy flow is improved in last few years with the increasing scientific andteChnical input.The intensity of human supplemental energy input is higher than that of the natlonal average but is much lower than that of developed shanghai region,and the amount of indus-trial energy input is also much lower than shanghai’s,though the ratio(industrial energy input intotal supplemental energy)is rather close,to shanghai's There is a great deal of energy output fromthe agro-ecosystem but it can not meet the needs of high standard living for farmers.In order to es-tablish a rational system which can provides people with more food and a better circumstance,ener-gy input and Weseientific management should be enhanced.