基于四象限法的江西省南丰县耕林园置换潜力测算  

Calculation of the replacement potential for farmland,forest land,and garden in Nanfeng County,Jiangxi Province using four-quadrant method

作　　者：闫梓旭 陈美球[1,2] 刘一仁 严福华 YAN Zixu;CHEN Meiqiu;LIU Yiren;YAN Fuhua(Research Center on Rural Land Resources Use and Protection,Jiangxi Agricultural University,Nanchang 330045,China;Technology Innovation Center for Land Spatial Ecological Protection and Restoration in Great Lakes Basin,MNR,Nanchang 330006,China)

机构地区：[1]江西农业大学农村土地资源利用与保护研究中心,南昌330045 [2]自然资源部大湖流域国土空间生态保护修复工程技术创新中心,南昌330006

出　　处：《农业工程学报》2025年第7期239-247,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金项目(42461041)。

摘　　要：针对以“山下园林地、山上耕地”为典型的农用地土地资源错配问题,推进耕林园置换、优化农用地空间布局,对于促进耕地保护、实现农用地可持续利用具有重要意义,而科学测算耕林园置换潜力是基础。该研究以江西省耕地“山上换山下”试点南丰县为例,从土地质量、地理区位、生态条件、空间形态4个方面构建宜耕性评价指标体系,并运用四象限法,以坡度和宜耕性为主导因素进行潜力测算。结果表明:1)评价区域内耕地适宜性总体良好,但局部耕地适宜性水平较低;评价区域内林地宜耕性相对较差,宜耕性Ⅳ级、Ⅴ级林地占评价面积的65.39%;评价区域内园地宜耕性相对较好,宜耕性Ⅰ级、Ⅱ级、Ⅲ级园地占评价面积的84.73%。2)宜置换为耕地的潜力和宜置换为林地的潜力分别为15 437.86和778.91 hm^(2),在数量上分布不均衡。3)置换潜力表现出明显的空间分异特征。其中,宜置换为耕地的潜力主要分布在桑田镇、白舍镇、莱溪乡等地,主要集中在中部河谷平原;宜置换为林地的潜力主要分布在付坊乡、三溪乡、太和镇和紫霄镇等丘陵山区,整体上东西多,中部少。4)建议基于不同的地类调整情形,在因地制宜和稳慎推进的前提下,制定差别化的推进策略。研究结果可为农用地布局优化提供依据。Land resources can greatly contribute to the national food security in sustainable agriculture.The rational use of land is often required for the better match of land functions.However,the garden land can be found under the mountain and farmland on the hill.It is of great significance to promote the replacement of farmland with the forests and gardens,according to the reginal land and climate conditions.This study aims to optimize the spatial distribution of agricultural land,particularly for the promotion of arable land preservation and sustainable use of farmland.The replacement potential of farmland with forests was calculated after optimization.A case study was taken as the Nanfeng County,Jiangxi Province,China.An evaluation index system was then constructed for the arable land suitability from four aspects:land quality,geographical location,ecological conditions and spatial pattern.The four-quadrant method was also used to measure the potential with the slope and arable land suitability as the dominant factors.The results show that:1)The suitability of farmland was generally excellent,but there was the low suitability level of local farmland.The full use of land was difficult to realize in the study area during this time;The relatively small areas of arable suitability in Class IV and V forests were accounted for 65.39%of the total;There were the relatively large areas of arable suitability in the Class I,ⅡandⅢfields,which were accounted for 84.73%of the total;Most lands were favorable in agricultural production.But some of the fields shared the less arable land to develop.2)There was the uneven distribution in the replacement potential with farmland and forest.Specifically,the potential replacement was obtained with the farmland total of 15437.86 hm^(2),the forest land of 6548.17 hm^(2) under the mountain,and 8889.69 hm^(2) was the field under the hill;The total potential of forest land to be replaced was 778.91 hm^(2),of which 69.70 hm^(2) was farmland on the mountain,and 709.21 hm^(2) was the garden l

关 键 词：耕地保护 布局优化 潜力测算 四象限法 南丰县 

分 类 号：F301.24[经济管理—产业经济]