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cje ›› 2004, Vol. ›› Issue (5): 156-161.

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Advances in the integrated evaluation of farmland fertility

ZHENG Lichen1, YU Wantai1, MA Qiang1, WANG Yongbao2   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2. Extension Station of Agricultural Technology of Shilihe Town of Sujiatun District of Shenyang City, Shenyang 110107, China
  • Received:2004-04-07 Revised:2004-05-10 Online:2004-10-10

Abstract: It seems very difficult to assess the farmland fertility quality generally and objectively, because of influences from both natural and human factors. In order to avoid the subjectivity in the evaluation processes, some mathematical methods were introduced to this field in recent years, with which the numerical evaluation can be conducted. This paper introduced and compared several evaluation methods of farmland fertility. At the same time, it has introduced the sampling techniques, minimum database systems of evaluation indicators, and numerical methods of integrated evaluation in detail. With the development of GPS and GIS, the evaluation methods of soil fertility quality will be more perfect, which provide theoretical basis for the rational use of soil resources.

Key words: Sea surface temperature, Mankind activities, Coral reef, Ecosystem influence, Weizhou Island

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