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Research on the spatial distribution characteristics of arable land natural quality grade in Yunnan province

机译：云南省耕地自然质量等级空间分布特征研究

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Understanding the distribution characteristics of arable land in Yunnan Province is significant to make the scientific decision for using and improving the natural quality of arable land. In this study, the distribution characteristics of the arable land grade including 129 counties were analyzed based on the accomplishment of cultivated land classification in Yunnan Province. The results showed that the average natural grade was 9.8 and ranged from 1 to 28, which meant that the natural quality of arable land was relatively lower in Yunnan Province. In excellent zone, the grade ranged from 2 to 21, plus 25 and 26, and the average grade was 9.3. In good zone, it ranged from 3-23, plus 1, and the average grade was 10.3. In medium zone, it ranged from 2-25, and the average value was 10.4. In poor zone, it ranged from 2-27 without 17, 18, 19 and 20, and the average was 8.1. The middle and poor arable land had the largest area, and concentrated in the middle and poor zone, which had influenced the average grade the most in the whole province. This research provides a reference for policy making about apace arrangement optimization, quality improvement and ecology environment protection for arable land in Yunnan Province.
机译：了解云南省耕地的分布特征，对于做出合理利用和提高耕地自然质量的科学决策具有重要意义。本文基于云南省耕地分类的完成情况，分析了129个县的耕地等级分布特征。结果表明，平均自然等级为9.8，范围在1到28之间，这意味着云南省的耕地自然质量相对较低。在优秀区域中，等级范围为2到21，再加上25和26，平均等级为9.3。在好区域中，其范围为3-23加1，平均成绩为10.3。在中等区域，范围为2-25，平均值为10.4。在贫困地区，范围为2-27，没有17、18、19和20，平均值为8.1。中部和贫困耕地面积最大，集中在中部和贫困地区，对全省平均等级的影响最大。该研究为云南省耕地空间布局优化，质量改善和生态环境保护提供了政策参考。

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