• ISSN 1008-505X
  • CN 11-3996/S

耕地质量内涵解析与评价指标体系构建研究进展

Conceptual analysis and evaluation indicator system development of cultivated land quality

  • 摘要: 保护耕地质量是保障国家粮食安全、生态安全和可持续发展的前提,构建系统的耕地质量评价体系是保护耕地的基础。通过梳理该领域的研究进展,了解其研究重点和发展方向,可为我国耕地保护提供一定理论支撑。本研究采用文献回顾法和总结归纳法,探析了耕地质量内涵,分析了国内外耕地质量评价的发展历程、指标体系和方法模型。研究认为:1)耕地是用于种植农作物并经常进行翻耕、耕耙、平整等耕作措施的土地,是自然和人类共同作用形成的人地综合体。耕地质量是耕地在生产管理、经济发展和自然生态等领域的综合反映,涉及土壤质量、空间质量、生态质量、管理质量和经济质量五个维度;2)耕地质量评价是反映耕地质量状态和满足功能需求程度的重要度量方式,经历了定性到定量,单目标到多目标,单尺度向多尺度、高精度发展综合评价的发展历程;集成地理信息系统、遥感、全球定位的“3S”技术与数学模型相结合、机器学习算法等评价方法在耕地质量评价中不断应用和发展,能较准确地评价各因素对耕地质量的影响。3)全国各级农业农村部门依据《耕地质量等级》(GB/T33469—2016)提出的特尔斐法和层次分析法相结合的方法确定各评价因子的权重,通过隶属函数计算出各评价指标的隶属度,计算出耕地质量综合指数,确定耕地质量等级。未来,应将农民耕种行为纳入耕地质量评价因子,构建中低产田耕地质量评价指标体系,注重不同空间尺度下耕地质量评价科学衔接。

     

    Abstract: The cultivated land quality protection stands as a fundamental prerequisite for safeguarding national food security, ecological safety, and sustainable development. Establishing a systematic evaluation framework for cultivated land quality lays the cornerstone of effective land conservation efforts. By reviewing the advances in this domine and descerning its research priorities and future trajectories, we can furnish theoretical underpinnings for the preservation of cultivated land in China. This study employed literature review and summarization methods to delve into the connotation of cultivated land quality. It analyzed the evolution, indicator framework, and methodological models applied in evaluating cultivated land quality. Key foundings included: 1) cultivated land emerges as a human land nexus, shaped by the interplay of natural and human activities, primarily designated for crop cultivation and frequently subjected to agricultural practices such as tilling, raking, leveling et al. The quality of cultivated land is a hostic manifestation encompassing production management, economic vitality, and ecological integrity. It includes five dimensions: soil quality, spatial quality, ecological quality, management quality, and economic quality. 2) The assessment of cultivated land quality serves as an pivotal metric, gauging both the current state of cultivated land and its alignment with demand. This assessment has evolved from qualitative to quantitative analysis, from singular to multifaceted objectives, and from single-scale to multi-scale, high-precision evaluations. The integration of geographic information systems, remote sensing, global positioning (the "3S" technology) with mathematical models, machine learning algorithms, and other evaluation methodologies continues to advance, enable precise evaluations of how various factors influence cultivated land quality. 3) The agricultural and rural departments nationwide ascertain the weights of each evaluation factor by combining the Delphi method and analytic hierarchy process proposed, as outlined in the “Quality Grades of Cultivated Land” (GB/T33469-2016). Through membership functions, the degree of membership function for each evaluation index is calculated, followed by computation of a comprehensive index for cultivated land quality, culminating in the determination of its land quality level. Looking ahead, it is imperative to incorporate farmers' cultivation cultivation practices into the evaluation factors of cultivated land quality. Additionally, a system of evaluation indicators tailored for medium and low-yield cultivated land quality should be established, with a particular emphasis on scientifically connecting cultivated land quality evaluation across different spatial scales.

     

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