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cje ›› 1992, Vol. ›› Issue (2): 1-3,7.

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Quantitative Characteristics of Nitrogen Cycling in Agroecosystems of Miyun, Beijing

Hu Chunsheng1, Han Chunru2   

  1. 1. Institute of Agricultural Modernization, Academia Sinica, Shijiazhuang 050021;
    2. Beijing Agricultural University, 100094
  • Received:1991-07-01 Revised:1991-08-31 Online:1992-04-10

Abstract: Quantitative patterns and characteristics of nitrogen cycling in agroecosystems of Miyun county of Beijing suburb are studied and evaluated, Aseries of related parameters are obtained, and effective ways are suggested for improving the system and its nitrogen efficincy.

Key words: agro-ecosystem, emergy, evolution, Hunan Province