京郊密云县农业生态系统氮素循环的数量特征研究  

Quantitative Characteristics of Nitrogen Cycling in Agroecosystems of Miyun, Beijing.

作　　者：胡春胜[1] 韩纯儒[2] 

机构地区：[1]中国科学院石家庄农业现代化所,050021 [2]北京农业大学,100094

出　　处：《生态学杂志》1992年第2期1-3,7,共4页Chinese Journal of Ecology

摘　　要：能量转化和物质循环是农业生态系统最基本的功能特征。Quantitative patterns and characteristics of nitrogen cycling in agroecosystems of Miyun county of Beijing suburb are studied and evaluated, A series of related parameters are obtained, and effective ways are suggested for improving the system and its nitrogen efficincy.

关 键 词：农业生态系统 氮素循环 

分 类 号：S181[农业科学—农业基础科学]