中国区域土地生态安全与评价研究进展

区域土地生态安全问题日益突出，土地生态安全评价与研究成为当前土地资源可持续利用研究的前沿课题。笔者通过对相关文献查询和梳理，系统地评析国内外不同学者关于中国区域土地生态安全与评价的研究进展。总体来看，土地生态安全评价研究正由单要素、静态研究向综合、动态研究发展，从数理评价模型向空间评价模型转变。研究区域多限于西北干旱区、农牧交错带、城市区域、流域及其他敏感地区，主要基于数学模型、生态模型、景观生态模型和3S技术进行研究，缺乏基础理论的探讨和典型区域的对比研究。评价指标体系以及安全阀值的确定是研究的难点。在此基础上，对未来的研究方向进行了展望，旨在为今后土地生态安全评价与研究提供方法和借鉴。

Research Progress on Ecological Security and Evaluation of Regional Land in China

As regional land ecological security issues being increasingly prominent, the research of land ecological security has become the forefront topic in the field of sustainable utilization of land resource. Through the index and analysis of relevant literatures, the author systematically evaluated the research progress at home and abroad on land regional ecological security in China. Overall, land ecological security evaluation had evolved from single factor, static study to integrated, dynamic research, from the mathematical evaluation model to the space evaluation model. The research fields were mainly focused on arid areas in northwest, farming-pastoral zones, urban areas, watersheds and other sensitive areas, the research methods were to adopt mathematical model, ecological model, landscape ecology model and 3S technology, insufficiently at basic theory and comparative study of typical areas. The research difficulty lay in that how to define the evaluation index system and safety threshold. On that basis, the author prospected the future research orientations to provide methodological and references for further research on land ecological security evaluation.