耕地利用转型突变点检测及其时空特征--以昆明市东川区为例  

Mutation Point Detection of Cultivated Land Use Transition and Its Spatial-Temporal Characteristics:Taking Dongchuan District of Kunming City as an Example

作　　者：蒋梦凡 李智国 李杰[1] 刘新有 JIANG Mengfan;LI Zhiguo;LI Jie;LIU Xinyou(School of City and Environment,Yunnan University of Finance and Economics,Kunming 650221,China;Kunming Branch,Water Diversion Engineering Construction Administration for Central,Kunming 650000,China)

机构地区：[1]云南财经大学城市与环境学院,云南昆明650221 [2]云南省滇中引水工程建设管理局昆明分局,云南昆明650000

出　　处：《中国土地科学》2022年第3期86-95,共10页China Land Science

基　　金：国家自然科学基金项目(41461113);云南省“万人计划”青年拔尖人才专项(YNWR-QNBJ-2019-067)。

摘　　要：研究目的:识别东川区1989—2020年耕地利用转型时间节点及其时空特征。研究方法:滑动T检验、Mann-Kendall检验、Yamamoto检验、局部空间自相关。研究结果:(1)耕地利用显性转型发生于2002年,主要受劳动力转移的影响,隐性转型发生于2006年和2012年,主要受产业结构调整的影响。(2)耕地利用形态综合指数在转型前后均呈东高西低态势,与东川区地形格局基本一致。(3)显性转型后耕地数量的空间集聚特征较为稳定,种植结构空间变化明显;隐性转型后经济与生态功能指数空间集聚程度不断降低,二者朝着区域均衡化方向发展,社会功能集聚程度有所提升,其区域异质性增强。研究结论:突变检测法较好刻画了东川区耕地利用转型时间节点;村域尺度的研究进一步揭示了地形和经济发展水平对耕地利用转型产生的较大影响。The purpose of this paper is to identify the temporal nodes and spatial-temporal characteristics of cultivated land use transition in Dongchuan District from 1989 to 2020.The method of this paper is to identify mutation point by sliding T test,Mann-Kendall test and Yamamoto test,and to analyze spatial-temporal characteristics by Local Spatial Autocorrelation method.The results show that:1)the explicit morphology transition node of cultivated land use is in 2002,and it is mainly affected by labor transfer.The recessive morphology transition nodes of cultivated land use are in 2006 and 2012,and they are mainly affected by adjusting industrial structure.2)The comprehensive index of cultivated land use morphology is high in the east and low in the west,which is basically consistent with the terrain pattern of Dongchuan District.3)After the cultivated land use transition of explicit morphology,the number of cultivated land is relatively stable in spatial distribution,while the spatial distribution of planting structure is very obvious.After the cultivated land use transition of recessive morphology,the spatial agglomeration degree of economic function index and ecological function index constantly reduce,and the spatial distribution of two functions develop in the direction of regional equalization.The agglomeration degree of social function index has improved and its regional heterogeneity has enhanced.In conclusion,the cultivated land use transition node in Dongchuan District can be well identified by the mutation detection method.The study of village scale further revealed the great impact of the terrain and economic development level on the transition of cultivated land use.

关 键 词：土地管理 耕地利用转型 突变点检测 时空格局 

分 类 号：F301.2[经济管理—产业经济]