基于核密度估算的都江堰耕地破碎化趋势及特征分析

Analysis of Trends and Characteristics of Cultivated LandFragmentation Based on Kernel Density Estimation for Dujiangyan City

  • 摘要: 通过样方分析与核密度估算揭示了都江堰市耕地时空演变特征,采用景观格局指数法分析了都江堰市耕地破碎化趋势变化,最后探究了耕地破碎度和人工干扰度之间的关系.结果表明:都江堰市耕地资源集中分布于东南部平坝地区;研究期内都江堰市耕地破碎化程度增大;耕地破碎度与人为干扰度紧密相关,破碎度高的区域受人为干扰程度大,破碎度低的区域受人为干扰程度小.根据耕地在各密度区呈现的不同特点,可为都江堰市耕地整理整治提出针对性的建议.

     

    Abstract: The cultivated land spatial distribution and changes of Dujiangyan city by using quadrate analysis and Kernel Density Estimation were considerd. By using the landscape pattern indexes, trend of cultivated land fragmentation for Dujiangyan city were analyzed. Finally, a comparative analysis of the cultivated land fragmentation index and the artificial disturbance index was given. The results showed that the cultivated land in Dujiangyan city was centrally distributed in the southeastern of the region; the fragmentation degree of cultivated land in Dujiangyan city tended to increase; cultivated land fragmentation index associated closely with the artificial disturbance index, and the regions with high cultivated land fragmentation index were more affected on the influence degree by the artificial disturbance index, and the regions with low cultivated land fragmentation index were less affected on the influence degree by the artificial disturbance index. According to different features of various density zoning, the reference for land management and land consolidation was provided.

     

/

返回文章
返回