太行山山地及山前平原耕地系统韧性评价——以石家庄市为例

Resilience Evaluation of Cultivated Land System in Taihang Mountains and Piedmont Plains:A Case Study of Shijiazhuang City

耕地系统韧性与耕地数量—质量—生态“三位一体”管护目标密切相关,对增强耕地稳定性、提升耕地利用效率、创新耕地保护举措具有重要意义。该文从耕地系统内部属性与外部环境综合作用视角解析耕地系统韧性内涵,基于生产—生态—形态—质量韧性4个维度构建耕地系统韧性评价体系,对太行山山地及山前平原区石家庄市耕地系统韧性进行评价,分析制约耕地系统韧性水平的障碍因素。结果显示:①研究区耕地系统韧性综合评价指数区间为[0.754,1.339],韧性水平沿“东部平原—低海拔丘陵坡地—西部太行山山地”方向由高到低分布,空间异质性显著;②东部平原优越的耕地质量和农业生产条件决定了其较高的生产韧性、形态韧性及质量韧性水平,但农用化学品的大规模投入使其生态韧性水平弱于西部山区耕地;③准则层中形态韧性障碍度最高,指标层中土壤PH值、田块规整度、耕地连片度障碍度较高,是制约耕地系统韧性水平的重要因素,应逐步开发和改良低产耕地,重视土地整理复垦工程,优化农业生产条件,坚持藏粮于地、藏粮于技。研究结果对完善耕地评价理论体系及探索基于韧性的耕地“三位一体”管护机制具有积极作用,可为促进耕地系统可持续利用提供科学依据。

The cultivated land system resilience is closely related to the"trinity"of cultivated land quantity,quality and ecology,which is of great significance to enhance the stability of cultivated land,improve the utilization efficiency of cultivated land,and innovate the measures of cultivated land protection.This paper analyzed the connotation of cultivated land system resilience from the perspective of integrated effects of internal attributes of cultivated land system and external environment,constructed a cultivated land system resilience evaluation system based on four dimensions of production,ecology,shape and quality resilience,and systematically evaluated the cultivated land system resilience of Shijiazhuang City in the Taihang mountains and piedmont plains.The obstacle factors restricting the resilience level of cultivated land system were analyzed.The results are shown as follows.①The index range of comprehensive evaluation results of cultivated land resilience is[0.754,1.339].The resilience level showed a gradient distribution from high to low along the direction of"eastern plain,low elevation hilly land,and western Taihang mountains",with significant spatial heterogeneity.②Superior cultivated land quality and agricultural production conditions in the eastern plain determined its higher production,shape and quality resilience,but the ecology resilience of the eastern plain was weaker than that of the western mountainous land due to the large-scale input of agricultural chemicals.③The obstacle degree of shape resilience is the highest in the criterion layer,and the obstacle degree of soil PH value,field regularity and contiguity of cultivated land is higher in the index layer,which is an important factor restricting the resilience level of cultivated land system.Low-yield cultivated land should be gradually developed and improved,land consolidation and reclamation engineering activities should be carried out,agricultural production conditions should be optimized,and grain storage should be based on land and technology.The study showed that the resilience evaluation of cultivated land system played a positive role in improving the theoretical system of cultivated land evaluation and exploring the"trinity"management and protection mechanism based on resilience,which could provide scientific criteria for promoting the sustainable use of cultivated land system.