Future trends in carbon use efficiency for Chinese terrestrial ecosystem based on CMIP5 model results

doi:10.7523/j.issn.2095-6134.2017.04.007

Abstract

Abstract: The datasets of gross primary production, net primary production, mean annual precipitation, and mean annual temperate were collected from the results of 12 models in Phase 5 of Coupled Model Intercomparison Project to investigate the temporal patterns of carbon use efficiency (CUE) for Chinese terrestrial ecosystem and the relationship between CUE and climate factors under different emission scenarios (RCP2.6, RCP4.5, and RCP8.5) from 2006 to 2100. Our results showed that the CUE from the different models for Chinese terrestrial ecosystem ranged from 0.332 to 0.617 with a mean level of 0.5 under the three scenarios. Slight decreasing trends were detected for CUE and these trends were enhanced by increasing radiation force. Future CUE of Chinese terrestrial ecosystem mostly had positive correlation with precipitation while negative correlation with temperature.

Key words: carbon use efficiency, climate change, Chinese terrestrial ecosystem

CLC Number:

Q148

YUAN Minshu, LI Mingxu, CHENG Hongyan, DING Juhua, LI Hanwei, PENG Changhui, ZHU Qiuan. Future trends in carbon use efficiency for Chinese terrestrial ecosystem based on CMIP5 model results[J]. , 2017, 34(4): 452-461.

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