基于空间自相关分析的山区耕地质量分区研究──以陇南市武都区为例

Zonal Study of Farmland Quality in Mountainous Area Based on Spatial Autocorrelation Analysis:Taking Wudu District of Longnan City as an Example

利用局部空间自相关和Moran散点图相结合的方法,以国家级耕地质量等级指数为对象,探讨陇南市武都区耕地的空间分布特征,并以此为依据提出耕地保护措施。研究结果表明:武都区耕地质量整体偏低,在山区条件下,武都区耕地质量在空间上表现出一定的聚集性规律,正相关类型(HH型和LL型)聚集性较强,负相关类型(HL型和LH型)分布零星,无明显分布规律。基于空间自相关方法的耕地保护分区方案,综合考量了耕地自然条件,利用水平、经济状况和空间分布特征,拓宽了耕地保护依据,为耕地保护提供了新思路。

In order to discuss the arable land’s spatial distribution characteristics of Wudu District in LongnanCity, this paper took national cultivated land quality index as an object and used the methods of local spatialautocorrelation analysis and Moran scatter point diagram, on the basis of the results, the authors proposed themeasures for protecting cultivated land. The results showed that the quality of cultivated land in Wudu Districtwas entirety low, aggregation was shown in spatial under mountainous condition, the type of positive correlation（HH and LL） had strong aggregation, while the type of negative correlation（HL and LH） had the scattereddistribution with no obvious law. The partition scheme of cultivated land protection based on the spatialautocorrelation method, which comprehensively considered the natural condition of cultivated land, utilizationlevel, economic status and spatial distribution characteristics, broadened the basis of cultivated land protectionand provided a new idea for the protection of arable land.