陆良县县域耕地质量空间分布特征及影响因素分析  

Analysis of Spatial Distribution Characteristics and Influencing Factors of Cultivated Land Quality in Luliang County

作　　者：陈颖 廖丽君[1,2] 郑宏刚 刀剑[1,2] 李梦嫡 Chen Ying;Liao Lijun;Zheng Honggang;Dao Jian;Li Mengdi(College of Water Resources and Hydraulic Engineering,Yunnan Agricultural University,Kunming 650201,China;Engineering Research Center of Science and Technology of Land and Resources,Yunnan Agricultural University,Kunming 650201,China;Land Use-Field Base in Luliang County of Yunnan Province,Ministry of Land and Resources,Kunming 650201,China)

机构地区：[1]云南农业大学水利学院,云南昆明650201 [2]云南农业大学国土资源科学技术工程研究中心,云南昆明650201 [3]国土资源部土地利用-云南陆良野外基地,云南昆明650201

出　　处：《山东农业科学》2018年第12期73-79,共7页Shandong Agricultural Sciences

基　　金：国家科技支撑计划课题"西南睦边扶贫区基本农田建设技术研究与示范"(2015BAD06B04)

摘　　要：科学了解耕地质量空间分布特征,是提高耕地质量建设和保护的基础。本研究以2016年陆良县耕地质量等别更新数据为观测数据,采用Geo Da软件从陆良县级和乡镇尺度上分析耕地质量的空间差异特征,并基于R语言中的K-means算法,以海拔、坡度两因子对耕地质量进行聚类分析,揭示陆良县耕地质量与海拔和坡度的联系。结果表明:陆良县耕地质量呈现出中部高且向四周逐渐降低的分布规律,耕地质量等别Moran’s I值显示为:国家经济等>国家利用等>国家自然质量等。耕地质量局部空间自相关的空间分布表现为:高值聚集区(H-H)集中分布在陆良县中部的坝子,低值聚集区(L-L)主要分布在西部和东部,负相关(H-L)区零星分布。陆良县耕地质量空间分布受海拔和坡度的影响成同心圆式的分布规律;但耕地质量分布受海拔影响程度大于坡度。In order to understand the spatial distribution characteristics of cultivated land quality in Luliang County,Yunnan Province,and improve the construction and protection of cultivated land quality,the updating data of cultivated land quality classification in Luliang County in2016were taken as the observation data,and the GeoDa software was used to analyze the spatial difference characteristics of cultivated land quality at the county level and township level in this paper.The two factors of elevation and slope were clustered to reveal their relationship with cultivated land quality in Luliang County based on K-means algorithm in R language.The results showed that the quality of cultivated land in Luliang County showed a distribution pattern of high in the middle part and gradually decreasing around it,and the Moran’s I value of cultivated land quality grade showed the national economy>the national utilization>the national natural quality.The spatial distribution of local spatial autocorrelation of cultivated land quality showed that the high-value accumulation area(H-H)was concentrated in the Bazi in the central part of Luliang County,the low-value accumulation area(L-L)was mainly distributed in the west and east,and the negative correlation area(H-L)was scattered.The spatial distribution of cultivated land quality in Luliang County was concentric circle influenced by altitude and slope,but the influence of altitude on cultivated land quality distribution was greater than that of slope.

关 键 词：耕地质量 空间分布 空间自相关 陆良县 海拔 坡度 

分 类 号：F323.211[经济管理—产业经济]