辽宁省庄河市农业生态系统能值分析  

Energy Analysis of Agro-ecosystems in Zhuanghe City of Liaoning Province

作　　者：刘方明[1] 曹志强[2] 孟维韧[2] 

机构地区：[1]佳木斯大学生命科学学院,黑龙江佳木斯154007 [2]沈阳农业大学农学院,辽宁沈阳110161

出　　处：《河北农业科学》2008年第4期94-96,共3页Journal of Hebei Agricultural Sciences

摘　　要：运用能值分析理论和方法,对庄河市农业生态系统进行能值综合研究。结果表明:与其它地区比较,该农业系统能值利用强度和人均能值利用量较高,环境承载力较高,能值投入率较高,净能值产出率较低,可更新能值比较低。农业生态系统投入水平较高,生态环境所受压力较大,自然环境资源利用率较低。因此,在庄河市农业发展中要重视可更新资源,加强资源保护,提高系统净能值产出率,以利于农业生态系统功能完善和农业可持续发展。The energy synthesis of ago-ecosystem in Zhuanghe City of Liaoning Province was performed by the method of energy analysis. The results showed that this ago-ecosystem system was high in energy per area, energy per person, environmental loading and energy input radio compared with others regions. While the ago-ecosystem was low in net energy output ratio and renewable resources energy radio. Thus the ago-ecosystem had highly input of agriculture and environmental pressure, lowly utilization ratio of renewable resources. Therefore, it was necessary to improve the efficiency of renewable resources, strengthen protection of resource and improve net energy output ratio to facilitate improvement of ago-ecosystem function and sustainable development of agriculture in Zhuanghe City.

关 键 词：农业生态系统 能值分析 辽宁省 

分 类 号：S181[农业科学—农业基础科学]