Drought-induced reduction in global terrestrial net primary production from 2000 through 2009

Maosheng Zhao, Steven W. Running

Research output: Contribution to journalArticlepeer-review

2119 Scopus citations

Abstract

Terrestrial net primary production (NPP) quantifies the amount of atmospheric carbon fixed by plants and accumulated as biomass. Previous studies have shown that climate constraints were relaxing with increasing temperature and solar radiation, allowing an upward trend in NPP from 1982 through 1999. The past decade (2000 to 2009) has been the warmest since instrumental measurements began, which could imply continued increases in NPP; however, our estimates suggest a reduction in the global NPP of 0.55 petagrams of carbon. Large-scale droughts have reduced regional NPP, and a drying trend in the Southern Hemisphere has decreased NPP in that area, counteracting the increased NPP over the Northern Hemisphere. A continued decline in NPP would not only weaken the terrestrial carbon sink, but it would also intensify future competition between food demand and proposed biofuel production.

Original languageEnglish
Pages (from-to)940-943
Number of pages4
JournalScience
Volume329
Issue number5994
DOIs
StatePublished - Aug 20 2010

Fingerprint

Dive into the research topics of 'Drought-induced reduction in global terrestrial net primary production from 2000 through 2009'. Together they form a unique fingerprint.

Cite this