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Spatial effect of influential factors of non-grain cultivated land:a case study of the Pearl River Delta

为科学管控耕地非粮化,本研究以珠三角县级行政区为研究单元,在揭示耕地非粮化空间分异特征基础上,采用空间杜宾模型和地理加权回归模型探究耕地非粮化及其空间效应。结果表明:珠三角2019年各县平均非粮化率为47.8%,高于全国平均水平。从非粮化率来看,耕地非粮化集聚于珠三角周边县域及部分中部县域,以低-低和高-高集聚为主;从非粮化面积来看,耕地非粮化集聚于研究区东北部,以高-高集聚为主。珠三角非粮化存在空间依赖性。从直接效应看,第一产业GDP占比、到市中心的距离与非粮化呈负相关,劳均耕地面积、有效耕地灌溉面积与非粮化呈正相关;从溢出效应看,人均GDP与非粮化呈正相关。第一产业GDP占比和有效耕地灌溉...

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Bibliographic Details
Published in:Journal of agricultural resources and environment 2024-01, Vol.41 (3), p.530
Main Authors: Chen, Lizhen, Liu, Guangsheng, Nie Jiaqi, Yao, Xiao, Yang, Liying, Wang, Hongmei
Format: Article
Language:Chinese
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Summary:为科学管控耕地非粮化,本研究以珠三角县级行政区为研究单元,在揭示耕地非粮化空间分异特征基础上,采用空间杜宾模型和地理加权回归模型探究耕地非粮化及其空间效应。结果表明:珠三角2019年各县平均非粮化率为47.8%,高于全国平均水平。从非粮化率来看,耕地非粮化集聚于珠三角周边县域及部分中部县域,以低-低和高-高集聚为主;从非粮化面积来看,耕地非粮化集聚于研究区东北部,以高-高集聚为主。珠三角非粮化存在空间依赖性。从直接效应看,第一产业GDP占比、到市中心的距离与非粮化呈负相关,劳均耕地面积、有效耕地灌溉面积与非粮化呈正相关;从溢出效应看,人均GDP与非粮化呈正相关。第一产业GDP占比和有效耕地灌溉面积对非粮化的影响均呈现中部高、周边低的空间异质性特征。研究表明,经济发展水平较高区域更易产生“非粮化”,非粮化治理应当因地制宜、分级整治,坚决落实“非粮化”管理政策,提高种粮收益和粮食综合生产力,促进粮农降本增效。In this study, to clarify the current situation of non-grain conversion of cultivated land in the Pearl River Delta and curb the tendency of this conversion, a county-level administrative region was used as the research unit. The spatial differentiation characteristics of non-grain conversion in the Pearl River Delta were determined, and the spatial Durbin model and geographically weighted regression mode were used to explore the spatial effects of the influencing factors of non-grain conversion of cultivated land. The average non-grain rate of counties in the Pearl River Delta in 2019 was 47.8%, which was hi
ISSN:2095-6819
2095-6819
DOI:10.13254/j.jare.2023.0311