草地植被生产力模拟及其影响因素

Simulation of grassland vegetation productivity and its influencing factors

准确估算草地生态系统的净初级生产力是研究全球陆地碳氮循环的重要问题之一。本研究探讨了人类活动和气候变化对草地植被生产力的影响及其作用机制,回顾了用于估算植被生产力的模型方法:统计模型、光能利用率模型、生态系统过程模型的发展和进步及其应用现状。在总结不同估算植被生产力模型研究进展的基础上,探讨模型应用于草地生态系统研究时存在的优势和局限性,为今后有关草地植被生产力的研究中可以根据不同研究对象的特点选择更为合适的研究方法提供一定的借鉴。

Estimating grassland net primary productivity accurately is one of the main problems for the global terrestrial carbon–nitrogen cycle.This study examined the impact of human activity and climate change on vegetation productivity and its mechanisms and reviewed the development and progress and research status of methods used to estimate vegetation productivity.This included statistical models,parameter models,and process models.Based on the research progress of various productivity models,this paper discussed the limitations of the models in the study of grassland ecosystems.This can provide a reference for future research on vegetation productivity to select more suitanle research methods according to different research objectives.