RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2004, Vol. 13 >> Issue (1): 47-52.

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INDICATORS AND METHOD OF ARABLE LAND QUALITY EVALUATION AT THE PATCH SCALE——A CASE STUDY OF LIU YANG, HUNAN PROVINCE

XU Shu-hui   

  • Received:1900-01-01 Revised:1900-01-01 Online:2004-01-20
  • Contact: XU Shu-hui

Abstract: The arable land, which takes an important role in cultivation, is a complicatedly ecosystem. The primary factors to affect the quality of the arable land are comprised of natural, socioeconomic and the geographic situation. Through the analysis of the factors to affect the quality of arable land and the establishment of indicator systems for measure the change of the quality of arable land, it is essential to preliminarily preclude the converted tide and to discover the problems of arable land in time. This paper is based on the theoretical framework of state-efficiency-pressure to assess the quality of arable land in land patch scale, used of the statistical software SPSS and analyzed the historical statistical data of Liu Yang city, Hunan Province, the different state-indicators to the fertile content of arable land quality have been established. The other indicators, such as the conditional factors of situation & transportation of land patch connected with the nearly town, the natural and economical utilization-efficiency of the corns in land patch, are designed to evaluate, and some particular indicators to evaluate a specific problem, such as land erosion-rate, qualitative degradations of arable land, rough cultivation, the transformation of arable land at random, are put forwards. With the framework and methods as previously mentioned, the 1 156 arable land patches of Liu Yang, Hunan Province are researched and analyzed.

Key words: quality of arable land, the assessing indicators system of arable land, state-efficiency-pressure model, Liu Yang City, Hunan Province

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