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摘要
Roots play an important role in the carbon cycle of ecosystems. The Earth System Models (ESMs) of the Coupled Model Intercomparison Project (CMIP) have been widely used to simulate and predict root bio-mass. In this paper, the spatial distribution, dynamic change, and comparison with observed values of root bio-mass of 14 ESMs simulated historical experiments were analyzed. The results showed that: (1) The global distribution of multi-year average from 1850 to 2005 of root biomass indicated that 7 ESMs had maximum or minimum values, while the rest ESMs showed that root biomass was higher in the middle and high latitudes of the equator and the northern hemisphere. The root biomass distribution at different latitudes showed that 40°S is also one of the high value areas; (2) The simulation results from 1995 to 2005 are compared with the site observation data (1990-2010) in different climatic zones by using SS index, the result showed deviations are relatively large but the simulation effect of temperate zone is slightly better than frigid zone and tropical zone. On the global scale, BCC-CSM2-MR is the best simulated ESM; (3) In the Qinghai-Xizang Plateau, ESMs can reasonably simulate the seasonal variation over the years 1850 to 2005 of root biomass, but the relationship between interan-nual variation of the simulated root biomass and the meteorological factors (temperature, precipitation) by different ESMs is different. In order to conduct more precise and in-depth research and analysis, in addition to improving the model, it is also necessary to improve the collection of observational data.
- 出版日期2022
- 单位中国科学院大学
