摘要
耕地林果化对全局粮食安全具有重要影响,针对宁远县耕地林果化突出的现象,文章基于空间自相关、地理探测器模型等方法探讨2009、2019、2023年的耕地林果化的垂直空间特征,利用因子探测器确定影响该县林果化率变化的主要驱动因素。研究发现:(1)2009—2019年这一时期该县耕地转变为林果地的面积为1602 hm^(2),耕地林果化率为3.5%,2019—2023年耕地转变为林果地的面积为319 hm^(2),耕地林果化率为0.7%,林果化面积大幅减少。(2)该县的耕地林果化现象具有显著的空间集聚特性,主要集中在海拔高度200~400 m,坡度在15°以下且为北坡的耕地上,呈现出“低海拔+缓坡+阳坡”的规律。(3)年净收益比、成本效益比、人均耕地面积、投入回收周期及农村劳动力外流程度是影响该县两个时期耕地林果化率的主要驱动因素,且属于增强型关系,这些社会经济因素共同作用对林果化的影响更加显著。
The conversion of cultivated land to forests and fruit trees has a significant impact on overall food security.In response to the prominent phenomenon of cultivated land conversion to forest and fruit trees in Ningyuan county,this paper explores the vertical spatial characteristics of cultivated land conversion to forest and fruit trees in 2009,2019,and 2023 based on spatial autocorrelation and geographical detector models.The main driving factors influencing the change in the conversion rate of forest and fruit trees in the county are identified using a factor detector.The study finds that:1)From 2009 to 2019,the area of cultivated land converted to forest and fruit trees in the county was 1602 hm^(2),with a conversion rate of 3.5%.From 2019 to 2023,the area of cultivated land converted to forest and fruit trees was 319 hm^(2),with a conversion rate of 0.7%.The area of forest and fruit trees has significantly decreased.2)The phenomenon of cultivated land conversion to forest and fruit trees in the county exhibits significant spatial agglomeration characteristics,mainly concentrated on cultivated land with an altitude of 200-400 m,a slope of less than 15°,and a northern slope,following the pattern of"low altitude+gentle slope+sunny slope".3)The annual net income ratio,cost-benefit ratio,per capita cultivated land area,investment recovery period,and the degree of rural labor outflow are the main driving factors affecting the conversion rate of cultivated land to forest and fruit trees in the county during the two periods,and they belong to an enhancing relationship.When these socioeconomic factors act together,their impact on forest and fruit tree conversion is even more significant.
作者
彭珂
唐琪勇
龙之冠
卢丽琛
万文艺
孙华明
Peng Ke;Tang Qiyong;Long Zhiguan;Lu Lichen;Wan Wenyi;Sun Huaming(Survey Affairs Center for Natural Resources and Planning of Yongzhou City,Yongzhou Hunan 425000;Ningyuan Natural Resources,Yongzhou Hunan 425600)
出处
《国土资源导刊》
2025年第4期118-126,共9页
Land & Resources Herald
基金
湖南省2024年度自然资源科研(标准)后补助项目(编号:HBS20240115)。
关键词
耕地林果化
空间特征
驱动因素
丘陵山区
宁远县
the conversion of cultivated land to forests and fruit trees
spatial characteristics
driving factors
hilly and mountainous region
Ningyuan County
