Zhang Zhuoyan, Ma Wenqiu, Yang Heng, Yao Yinhao, Zhang Yang, Li Wenqing
College of Engineering, China Agricultural University, Beijing, 100083, China.
College of Engineering, China Agricultural University, Beijing, 100083, China; Key Laboratory of Investigation, Monitoring, Protection and Utilization for Cultivated Land Resources, Ministry of Natural Resources, Chengdu, 610045, China.
J Environ Manage. 2025 Aug;389:126097. doi: 10.1016/j.jenvman.2025.126097. Epub 2025 Jun 10.
The fragmented arable land in hilly and mountainous areas reduces agricultural productivity significantly, and even poses challenges to agricultural sustainability. Land consolidation suitable for agricultural machinery (LCAM) is believed to be the most promising way to mitigate arable land fragmentation (ALF). Therefore, the paper assessed the spatial patterns of ALF from landscape, tenure, and farming fragmentation, as well as identifying the potential for LCAM to reduce ALF in hilly and mountainous areas of eastern Liaoning Province. The results showed that as the slope increased, the ALF characteristics became more severe, together with an average value of 0.57 in 2020. Spatially, positive spatial autocorrelation existed across the areas. In this paper, the potential for LCAM was identified by considering various types of ALF and dividing it into three dimensions (natural resource endowment, accessibility of agricultural machinery, and ecological stability). It presented a significant spatial differentiation. The average LCAM value was 0.44. Additionally, this paper identified five dominant obstacle factors for this purpose. Accordingly, this paper classified land into four zones based on the "potential" and "obstacle factors": the priority consolidation zone, the moderate consolidation zone, the comprehensive consolidation zone, and the reserve consolidation zone. This zoning provided a solid foundation for determining the sequence of implementation and tailoring strategies for LCAM schemes. In general, LCAM helps increase the productivity and integrity of public facilities of fragmented arable land by enlarging the plot size and providing a spatial basis for land rights reform. Both can effectively inhibit ALF. Together, alternative strategies involving adapting to different agricultural conditions, strengthening arable land ecosystem protection, and enhancing governmental financial support could facilitate the practical application of LCAM schemes and achieve sustainable agricultural production in China.
丘陵山区破碎化的耕地显著降低了农业生产力，甚至对农业可持续性构成挑战。适合农业机械作业的土地整治（LCAM）被认为是缓解耕地破碎化（ALF）最具前景的方式。因此，本文从景观、权属和耕作破碎化方面评估了耕地破碎化的空间格局，并确定了辽宁省东部丘陵山区实施适合农业机械作业的土地整治以减少耕地破碎化的潜力。结果表明，随着坡度增加，耕地破碎化特征愈发严重，2020年平均值为0.57。在空间上，各区域存在正空间自相关。本文通过考虑各类耕地破碎化情况并将其划分为三个维度（自然资源禀赋、农业机械可达性和生态稳定性）来确定适合农业机械作业的土地整治潜力。结果呈现出显著的空间差异，适合农业机械作业的土地整治平均评价值为0.44。此外，本文还确定了五个主要障碍因素。据此，本文基于“潜力”和“障碍因素”将土地划分为四个区域：优先整治区、适度整治区、综合整治区和后备整治区。这种分区为确定实施顺序和制定适合农业机械作业的土地整治方案策略提供了坚实基础。总体而言，适合农业机械作业的土地整治通过扩大地块规模和为土地权属改革提供空间基础，有助于提高破碎化耕地公共设施的生产力和完整性，两者均可有效抑制耕地破碎化。此外，结合适应不同农业条件、加强耕地生态系统保护以及增强政府财政支持的替代策略，能够促进适合农业机械作业的土地整治方案的实际应用，并在中国实现可持续农业生产。
