植被生产力模型研究进展

Research Progress of Vegetation Productivity Model

植被生产力模型作为生态系统植被研究的重要工具在植被生产力研究等方面都发挥着至关重要的作用。基于国内外相关文献,对植被生产力模型的应用范围、实用条件进行论述,总结了不同植被生产力模型的研究进展。结果表明:植被生产力的估算模型主要包括生态系统过程模型和光能利用率模型。生态系统过程模型综合考虑了多维度环境因素,对碳氮循环和土壤呼吸的动态变化过程模拟精确。光能利用率模型主要聚焦于植被生产力与光合有效辐射吸收之间的关联研究,能够与卫星数据结合,计算大面积植被生产力。讨论每个模型的应用范围、实用条件,在不同应用场景中的优缺点。植被生产力模拟应根据不同场景,运用多种模型综合分析,避免单一模型带来的不足,为植被生产力可持续发展提供准确数据。在未来研究中进一步关注模型参数优化和不确定性分析,以提升植被生产力模型的模拟性能和实用价值。

As an important tool of ecosystem vegetation research,vegetation productivity model plays a vital role in the study of vegetation productivity.Based on relevant literatures at home and abroad,this paper discussed the application range and practical conditions of vegetation productivity models,and summarized the research progress of different vegetation productivity models.The estimation models of vegetation productivity mainly include ecosystem process model and light energy utilization model.The ecosystem process model comprehensively considers the multi-dimensional environmental factors,and accurately simulates the dynamic changes of carbon and nitrogen cycle and soil respiration.The light energy utilization model mainly focuses on the correlation between vegetation productivity and photosynthetically active radiation absorption,and can be combined with satellite data to calculate large-area vegetation productivity.The application scope,practical conditions,advantages and disadvantages of each model in different application scenarios are discussed.Vegetation productivity simulation should be based on different scenarios,using multiple models for comprehensive analysis,to avoid the shortcomings brought by a single model,and to provide accurate data for sustainable development of vegetation productivity.Further attention should be paid to model parameter optimization and uncertainty analysis in future studies to improve the simulation performance and practical value of the vegetation productivity model.