中国国土资源经济2026，Vol.39Issue(9)：74-82,9.DOI:10.19676/j.cnki.1672-6995.001313
耦合连片度与宜耕性的耕地空间布局优化研究
Optimizing the Spatial Layout of Cultivated Land Through Coupling Contiguous Degree and Cultivability
摘要
Abstract
To address the coordinated development of"quantity—layout—quality"in cultivated land protection and explore optimization path cultivated land layout in ecologically sensitive areas,this study focuses on Junshan District,Yueyang City,and constructs a dual-driven evaluation framework combining"contiguity—cultivability".By constructing a 512 m-16 m non-uniform grid system,this study quantifies the indicators of contiguous degree including Purity Index(PI),Connectivity Index(CI),Fragmentation Index(FI),Shape Index(SI)and cultivability(topography,soil,location).The four-quadrant method was employed to divide optimized zones and propose differentiated management strategies.Results indicate:(1)Junshan District's cultivated land exhibits a"large concentration,small dispersion"pattern,with overall contiguous degree of cultivated land reaching 77.02%.However,83.19%of the 16 m grid units are fragmented,while the 64 m grid accommodates 27.30%of the cultivated land;(2)the cultivability is predominantly highly suitable(77.63%of area),spatially forming a high-quality agglomeration area in the northern plain and a transitional zone in the central region;(3)the study area is divided into four types of optimized zones based on the four-quadrant method:Core Protection Zones(high contiguous degree high cultivability,60.89%)prioritizing stable production capacity maintenance;Production Enhancement Zones(high contiguous degree low cultivability,18.72%)focusing on quality barrier remediation;Layout Optimization Zones(low contiguous degree high cultivability,19.35%)to advance the merger of small fields into large fields;Replacement Potential Zones(low contiguous degree low cultivability,1.04%)to establish a flood and drought coordinated withdraw mechanisms.关键词
耕地布局优化/连片度/宜耕性/非均匀格网/空间分析/岳阳市君山区Key words
cultivated land layout optimization/contiguous degree/cultivability/non-uniform grid/spatial analysis/Junshan District,Yueyang City分类
管理科学引用本文复制引用
卢霞,杜燕玲,曹仕,平李娜,彭寄清..耦合连片度与宜耕性的耕地空间布局优化研究[J].中国国土资源经济,2026,39(9):74-82,9.基金项目
湖南省自然科学基金"基于地理格局的耕地集中连片等级划分方法研究与应用"(2025JJ80064) （2025JJ80064）
湖南省自然科学基金"基于时空深度学习算法的湖南省破碎化耕地遥感提取与分析研究"(2024JJ8373) （2024JJ8373）
