摘要
[目的]探索耕地非粮化空间格局变化及其重心偏移趋势和迁移路径,为保护和可持续利用云南省耕地资源提供科学依据和辅助决策。[方法]基于云南省1980—2020年的土地利用空间数据,利用ArcGIS空间分析工具,获取过去40年耕地非粮化的空间分布数据,综合运用耕地非粮化速度模型、重心模型、耕地非粮化标准差异椭圆方法、空间自相关模型对云南省近40年耕地非粮化的空间分布、迁移路径与聚集特征进行分析。[结果]近40年来,云南耕地非粮化虽呈非均衡化发展态势,但其非均衡程度有降低的趋势,耕地非粮化最严重的区域集中在滇中城市群。1980年以来,昆明市、楚雄州和玉溪市耕地非粮化速度快于滇中其他地区和市州辖区。耕地非粮化重心空间迁移路径呈“旗帜”型形态,具体表现为先转向西南,随后转向东南,最后转向北方。云南省耕地非粮化空间聚集性总体呈下降趋势,“低—低”型聚类主要集中在西南、北部和南部少数地区,而“高—高”型聚类主要分布在东北、西南和南部;同时“高—高”和“低—低”聚类成为耕地非粮化空间特征演化的主要发展趋势。[结论]云南可耕地资源相对紧缺,耕地非粮化在时空格局上保留了不同程度的特征,存在时空转移路径分布的不平衡性,且耕地非粮化的时空聚集性突出。
【Objective】Exploring the changes in the spatial pattern and the central shift trends as well as the migration paths of‘non-food'cultivated land which will provide scientific basis and auxiliary decision-making for the protection and sustainable development of arable land resources in Yunnan province.【Method】Based on the spatial data of land use in Yunnan province from 1980 to 2020,the spatial distribution data of‘non-food'cultivated land in the past 40 years was obtained by using ArcGIS spatial analysis tools and the spatial distribution,migration path and agglomeration characteristics of‘non-food'cultivated land in Yunnan province in recent 40 years were analyzed by using the speed model,barycenter model,standard difference ellipse model.【Result】Over the past 40 years,although the‘non-food'cultivated land in Yunnan province had been developing unevenly,the degree of non-equilibrium had been on the decline,and the most serious‘non-food'cultivated land had been mainly concentrated in the urban agglomeration of central Yunnan province.Since 1980,the rate of‘non-food'cultivated land‘degradation'in Kunming,Chuxiong and Yuxi was faster than that in other areas of central Yunnan and municipal districts.The spatial migration path of the center of gravity of‘non-food'cultivated land was in the shape of‘flag',which was first turned to the southwest,then to the southeast,and finally to the north.The spatial agglomeration of‘non-food'cultivated land in Yunnan province showed a decreasing trend in general,with low-low clusters mainly concentrated in the southwest,north and a few areas in the south,while high-high clusters were mainly distributed in the northeast,south-west and south;meanwhile,the changes of high-high and low-low clusters dominate the changes of‘non-food'cultivated land in Yunnan province.At the same time,high-high and low-low clustering had became the main development trends in the evolution of spatial characteristics of cultivated land‘non-food'conversion.【Conclusion】Yunnan is relatively short of cultivated land resources,and the spatial and temporal pattern of‘non-food'cultivated land exists to varying degrees,with uneven distribution of spatial and temporal transfer paths,and the spatiotemporal agglomeration of‘non-food'cultivated land is prominent.
作者
唐世凯
尚能飞
刘丽芳
何雨烨
于龙凤
苏奇倩
冷燕
TANG Shi-kai;SHANG Neng-fei;LIU Li-fang;HE Yu-ye;YU Long-feng;SU Qi-qian;LENG Yan(School of Economics and Management,Southwest Forestry University,Kunming 650233,China;Yunnan Vocational College of Mechanical and Electrical Technology,Kunming 650203,China;Zhaotong Health Vocational College,Zhaotong,Yunnan 657000,China;School of Biotechnology and Engineering,West Yunnan University,Lincang,Yunnan 677000,China)
出处
《西南农业学报》
CSCD
北大核心
2024年第10期2321-2329,共9页
Southwest China Journal of Agricultural Sciences
基金
国家重大农业工程专项(2017YFD0200203-7)
云南省科技人才和平台计划建设项目(2018DH011)
云南省科技厅科技计划–地方高校联合专项(202001BA070001-187)
中央引导地方科技发展资金项目(202207AB110007)
临沧市科技创新团队(202204AC100001-TD01)。
关键词
耕地非粮化
空间分布
迁移路径
空间自相关
云南省
Non-agriculturalization of cultivated land
Space distribution
Migration path
Spatial autocorrelation
Yunnan province
