摘要
本研究以宁乡市为例,基于2023年度国土变更调查成果,运用最邻近点指数法、空间核密度估计法、标准差椭圆法等空间统计方法,对耕地种植属性空间格局特征进行量化分析。结果表明,宁乡市耕地种植属性呈现显著空间集聚特征;西北沩山片区与东南部受地形限制形成耕地低值区;四类耕地主轴西南-东北走向与地形基底高度耦合,非粮作物耕地则向东北低山丘陵带偏移,体现种植类型与地貌的响应关系;未耕种耕地在城镇化率较高区呈现破碎化孤岛分布;粮食作物集中分布于西南部传统产粮区,种植非粮食作物以及粮与非粮轮作主要分布在中部平原地带。分析结果为宁乡市耕地保护与利用提供了科学依据,也为未来耕地管理政策的制定和实施提供了重要参考。
Taking Ningxiang City as an example,this study uses the results of the 2023 land change survey and employs spa-tial statistical methods,including nearest neighbor index,spatial kernel density estimation,and standard deviation ellipse methods,to quantitatively analyze the spatial pattern characteristics of cultivated land planting attributes.The results show that the planting attributes of cultivated land in Ningxiang City exhibit significant spatial agglomeration characteristics.The northwest Weishan area and the southeastern region form low-value cultivated land areas due to terrain constraints.The prin-cipal axes of four types of cultivated land are coupled with the topographic base elevation along the southwest-northeast direc-tion.Non-grain crop land shifts toward the northeast hilly areas,reflecting the relationship between planting types and topog-raphy.The uncultivated land appears fragmented and island-like in areas with high urbanization.Food crops are concentrated in the traditional grain-producing areas in the southwest,while non-food crops and food-non-food crop rotation are mainly distributed in the central plain areas.The analysis results provide a scientific basis for cultivated land protection and utiliza-tion in Ningxiang City and serve as an important reference for the formulation and implementation of future land management policies.
作者
周卓军
ZHOU Zhuojun(The Second Surveying and Mapping Institute of Hunan Province,Changsha,Hunan 410119,China)
出处
《北京测绘》
2025年第8期1194-1198,共5页
Beijing Surveying and Mapping
基金
湖南省自然资源厅科技项目(20230131DJ)。
关键词
耕地保护
种植属性
空间格局
cultivated land protection
planting attribute
spatial pattern
