国家自然科学基金项目 (4217011836) 资助
1.Central China Normal University;2.Wuhan Institute of Landscape Architecture
Supported by the National Natural Science Foundation of China (No.4217011836)
耕地质量评价是掌握耕地质量现状、促进耕地资源可持续利用的基础。论文基于耕地“三位一体”保护的需要，综合考虑土壤质量、生态质量和管理质量，应用指标权重确定（Criteria Importance Though Intercriteria Correlation，简称CRITIC）法改进灰靶评价模型，提出了一种三重质量维度下的县域耕地质量评价新方法，并以赤壁市的耕地为例进行了实证。结果表明：有机质含量等17个指标能够较好地从土壤、生态、管理三个维度表征耕地多功能质量水平；赤壁市耕地质量处于中等偏上水平，靶心度的取值范围在0.66～0.85之间，耕地质量级别以二、三级为主，约占耕地总面积的80.49%；但耕地质量的区域空间差异较大；赤壁市耕地管理质量差异较小，土壤质量、生态质量对耕地综合质量的限制性较大，是制约耕地生产能力的主要质量维度；研究结果与现有的耕地质量等级评价结果基本一致，表明改进后的灰靶评价模型不仅赋权和评价过程更为客观，且利于测算耕地单维度质量，是对已有耕地质量评价方法的重要补充，旨在为新时代耕地多功能质量评价提供理论和方法借鉴。
【Objective】Cultivated land is a special public resource and the most precious natural resource, which has a fundamental and guaranteeing role in national food security. As an important means to measure the internal basic conditions and external utilization level of cultivated land, cultivated land quality evaluation is the basis for grasping the status quo of cultivated land quality and promoting sustainable use of cultivated land resources. 【Method】Based on the needs of the “triad” protection of cultivated land, we applied the Criteria Importance Though Intercriteria Correlation(CRITIC) method to improve the gray target evaluation model. Also, we proposed a new method for the evaluation of county-level cultivated land quality based on the triple quality dimension including soil quality, ecological quality and management quality. The Chibi City was taken as the case study. 【Result】Results show that the organic matter content and 17 others indicators can characterize the multi-functional quality level of cultivated land under the triple quality dimensions of soil, ecology and management. The quality of cultivated land in Chibi City was at an upper-middle level, and the range of bullseye was 0.66～0.85. Furthermore, the regional spatial difference of cultivated land quality was large and the quality grade of cultivated land in Chibi City was mainly two and three, accounting for about 80.49% of the total cultivated land area. The cultivated land with a higher quality level was mainly distributed in the northwest and east of Chibi City while with a lower quality level was predominant in the central and northern urban areas and Shenshanzhen in the northeast. The difference in cultivated land management quality in Chibi City was small, soil quality and ecological quality were more restrictive to the comprehensive quality of cultivated land. 【Conclusion】The evaluation results of this study were consistent with the existing cultivated land quality grade evaluation results. This indicate that the improved gray target evaluation model was not only more objective in the weighting and evaluation process, but also conducive to measuring the single-dimensional quality of cultivated land. The improved gray target evaluation model was an important supplement to the existing cultivated land quality evaluation methods. This research can provide theoretical and methodological references for the evaluation of cultivated land multi-functional quality, which is in line with the new perspective of cultivated land quality evaluation in the new era.
聂 艳,何新莹,王 朴,尹 琛,于 雷.基于改进灰靶模型的耕地质量评价方法与实证[J].土壤学报,DOI:10.11766/trxb202109170501,[待发表]
NIE Yan, HE Xinying, WANG Pu, YIN Chen, YU Lei. Cultivated Land Quality Evaluation Method and Demonstration Based on Improved Grey Target Model[J]. Acta Pedologica Sinica, DOI:10.11766/trxb202109170501,[In Press]