Research Progress of Vegetation Productivity Model
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 pro-gress 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 con-siders 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 disad-vantages 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 im-prove the simulation performance and practical value of the vegetation productivity model.
vegetation productivityecosystem process modellight energy utilization model
万方数据
维普
