| 3 | Objective and quantitative evaluation of environmental quality of the land for agriculture purpose显示文摘An objective and quantitative evaluation method on land environmental quality for agricultural purpose in a county range is studied in this paper. The method takes into account the quantity of heat, precipitation, meteorological disaster and soil fertility, which have close relationship to the potential productivity of land and can be expressed conveniently and accurately by taking Kai County as an example. Besides comprehensive grading assessment, assessment with Hilbert Space distance coefficiency and comprehensive judgement by fuzzy sets theory, the assessment factors are expanded to 18 parameters, and fuzzy dominance matrix and fuzzy clustering methods are adopted for regional comprehensive identification of agriculture-use land. Among these methods, each benefits from association with the other. In this paper, an all-round and objective new way for understanding of land environmental quality is put forward. | Ning Datong, Wang Sufen and Sun RuomeiInstitute of Environmental Sciences,Beijing Normal University,Beijing 100875,ChinaInstitute of Rural Development,Chinese Academy of Social Science,Beijing 100020,China | 1991 | Journal of Environmental Sciences1991，3，1： | 0 |
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