摘要
揭示东北黑土区典型县域耕地细碎化空间格局及影响因素,可以为黑土区高标准农田建设、三轮土地承包及黑土地保护等提供依据。本文以拜泉县作为研究区,运用熵值法测算各指标权重并求得耕地细碎化综合评价值,并通过皮尔森相关系数分析法计算各影响因素的作用强度。结果表明:1)耕地景观细碎化深受地形影响,丘陵与平原交界地区耕地细碎化水平最高,丘陵地区其次,平原地区最低。耕地权属细碎化受到土地分包方式、户均耕地面积等影响;2)耕地细碎化模式中,“景观低度细碎化-权属低度细碎化”和“景观低度细碎化-权属中度细碎”占主导地位,占比分别为33.33%、17.20%;3)耕地细碎化影响因素主要为权属、设施和自然切割力。权属切割力呈现高度负相关,设施和自然切割力呈现中度正相关,相关系数分别为-0.775、0.617、0.661,权属切割力的影响最大。拜泉县耕地细碎化空间分异特征明显,可从景观与权属双重视角下探索东北黑土区耕地细碎化治理对策,为推动农业现代化和制定耕地第三轮承包政策提供参考。
Revealing the spatial pattern and influencing factors of cultivated land fragmentation in typical counties in the northeast black soil region can provide a basis for high-standard farmland construction,three-round land contracting and black land protection in the black soil region.Taking Baiquan County as the research area,this paper calculated the weight of each index and the comprehensive evaluation value of cultivated land fragmentation by the entropy method,and examined the effect intensity of each influencing factor by the Pearson correlation coefficient analysis method.Results showed that:1) the cultivated land fragmentation was deeply affected by the topography.The cultivated land fragmentation level was the highest in the border area of hills and plain,followed by hilly area and plain area.Cultivated land ownership fragmentation was affected by land subcontracting and the average cultivated land area per household;2) in the cultivated land fragmentation mode,“low degree of landscape fragmentation-low degree of ownership fragmentation” and “low degree of landscape fragmentation-medium degree of ownership fragmentation” were dominant,accounting for 33.33% and 17.20%,respectively;and 3) the main influencing factors of cultivated land fragmentation included ownership,facility,and natural cutting forces.Ownership cutting force showed a high negative correlation,while facility and natural cutting forces showed moderate positive correlations,with correlation coefficients of-0.775,0.617 and 0.661,respectively.Ownership cutting force had the greatest influence.The spatial differentiation of cultivated land fragmentation in Baiquan County was obvious.Therefore,this paper suggests exploring countermeasures of cultivated land fragmentation in the northeast black soil area from the dual perspectives of landscape and ownership to provide reference for promoting agricultural modernization and formulating the third round of cultivated land contracting policy.
作者
杜国明
张宇
章尤琴
DU Guo-ming;ZHANG Yu;ZHANG You-qin(School of Public Administration and Law,Northeast Agricultural University,Harbin,Heilongjiang 150030,China)
出处
《农业现代化研究》
CSCD
北大核心
2023年第5期858-868,共11页
Research of Agricultural Modernization
基金
中国科学院战略性先导科技专项子课题(XDA28130402)。
关键词
东北黑土区
耕地细碎化
空间格局
影响因素
耕地细碎化模式
Northeast black soil region
cultivated land fragmentation
spatial pattern
influencing factors
cultivated land fragmentation model
