Grassland health refers to the degree to which the integrity of soil and ecological processes is maintained, which primarily reflects the health status and productivity of grasslands. Evaluating the degree of grassland health is vital for the sustainable develop of grasslands. There are many methods for evaluating grassland health, with advantages and disadvantages for each one. However, there is still a lack of systematic literature offering an overview of methods of grassland health assessment and their applicability. We summarized 10 methods of grassland health assessment, including vigor-organization-resilience (VOR) index evaluation model, condition-vigor-organization-resilience (CVOR) index evaluation model, principal component analysis method, analytic hierarchy process, cluster analysis method, grey relational analysis, pressure-state-response evaluation model, fuzzy comprehensive evaluation method, comprehensive evaluation model of grassland health, and evaluation model using remote sensing technology. The advantages, disadvantages, and applicability of these methods were discussed, aiming to provide scientific basis for selecting more suitable methods of grassland health assessment for different scenarios in the future.
草地健康是指维持草地土壤和生态过程完整性的程度,主要反映草地的健康状况以及生产能力。评价草地健康程度对生态系统稳定发展具有重要意义。草地健康评价方法有很多,各有优缺点,目前系统性介绍草地健康的评价方法及其适用性的综述性文献较少。基于此,本文归纳了包括VOR指数评价模型、CVOR指数评价模型、主成分分析法、层次分析法、聚类分析法、灰色关联法、压力-状态-响应评价模型、模糊综合评价法、草地健康综合评价模型以及利用遥感技术的评价模型在内的10种草地健康评价方法,并评述了这些评价方法各自的优缺点和适用性,以期为后续针对不同情境遴选较为合适的草地健康评价方法提供科学依据。.
Keywords: CVOR index evaluation model; VOR index evaluation model; fuzzy comprehensive evaluation method; grassland health assessment.