生态环境学报Issue(3)：496-503,8.
区域及全球尺度的NPP过程模型和NPP对全球变化的响应
NPP process models applied in regional and global scales and responses of NPP to the global change
摘要
Abstract
Net primary productivity (NPP) is defined as the difference between accumulative photosynthesis and accumulative autotrophic respiration by green plants per unit time and space. NPP is not only a key parameter representing vegetation activity and ecological processes, but also a main factor determining the carbon sink and reflecting the responses to global change for an ecosystem. At present, model simulation has become the primary means of NPP research at large spatial scales, and among many estimating tools, process-based models have increasingly tended to be dominant. According to the spatial extent that models are suited for, NPP process models are classified into two categories, i.e. models in patch scale, and models in regional and global scale. In spite of a multitude of papers related to the NPP estimation, there is still no any review focused on the process models applied in regional and global scales, and the responses of estimated NPP to the global change; therefore, this paper is concentrated on the application of these process models. The main contents of this work include: (1) further classification of these models into two groups, i.e. static vegetation models and dynamic vegetation models; (2) illumination of the differences and connections between these models;(3) summary and schematization of three major challenges in the application of NPP process models to regional and global scales, i.e. spatial and temporal scale transformations, acquirement and fusion of multi-source data, and the validation of models’ estimations;and (4) investigation of NPP’s responses to the global change, which were described in detail in three aspects involving climate change, atmospheric composition change, and the land use and land cover change (LUCC), for the purpose of seeking the change pattern concerned with NPP. Finally, the development trends of these process models were prospected. They were thought to have better comprehensiveness and more scientific mechanism in the future, at the same time, models would be integrated into global change research more tightly, and the hybrid models based on several existing simulating tools were believed to be one of the important developing directions. Besides, this paper considered that scale effects of the estimations would also be one of the foci in the future NPP studies.关键词
净第一性生产力(NPP)/区域及全球尺度/过程模型/全球变化/遥感Key words
net primary productivity (NPP)/regional and global scales/process models/global change/remote sensing分类
生物科学引用本文复制引用
冯险峰,孙庆龄,林斌..区域及全球尺度的NPP过程模型和NPP对全球变化的响应[J].生态环境学报,2014,(3):496-503,8.基金项目
国家“973”基础研究项目(2010CB950701)；国家科技支撑计划项目(2012BAH33B00) （2010CB950701）
