气候变化对陆地生态系统第一性生产力的影响研究综述

气候变化对陆地生态系统第一性生产力(NPP)的影响是一个倍受关注的问题,目前从观测、实验和模拟等几个方面在不同层次上对这个问题进行了大量的研究。气候变化对生态系统NPP的影响取决于气候各因子及其组合变化的方向、生态系统与当前气候之间的关系,另外还要受养分及其它因子的影响。目前大量存在的NPP模型各有优缺点,模拟结果各异但有会聚的趋势。改进观测方法和理论、建立全球共享NPP数据库、进行大规模生态系统层次的实验研究和发展生态系统动态模型(DGVM)是未来一段时期研究的重点。

IMPACT OF CLIMATE CHANGE ON THE NET PRIMARY PRODUCTIVITY OF TERRESTRIAL ECOSYSTEM

Net primary productivity (NPP) of terrestrial ecosystem is of great importance to the sustainability of human being, thus, its response to the changing climate becomes a research focus. Observation, experimentation and simulation are three interrelated methods used to address this issue. Strong progress has been made, whilst many uncertainties still exist. The progresses in this field is reviewed. It also pointed out that, great effort should be made to collect systematic and long term ecosystem data, to conduct experiments at the whole ecosystem level and to develop dynamic global vegetation model(DGVM),etc.