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Journal Article

China and India lead in greening of the world through land-use management

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Brovkin,  Victor       
Climate-Biogeosphere Interaction, The Land in the Earth System, MPI for Meteorology, Max Planck Society;

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Citation

Chen, C., Park, T., Wang, X., Piao, S., Xu, B., Chaturvedi, R. K., et al. (2019). China and India lead in greening of the world through land-use management. Nature Sustainability, 2, 122-129. doi:10.1038/s41893-019-0220-7.


Cite as: https://hdl.handle.net/21.11116/0000-0002-F936-9
Abstract
Satellite data show increasing leaf area of vegetation due to direct (human land-use
management) and indirect factors (climate change, CO2 fertilization, nitrogen deposition,
recovery from natural disturbances, etc.). Among these, climate change and CO2
fertilization effect seem to be the dominant drivers. However, recent satellite data (2000–2017) reveal a greening pattern that is strikingly prominent in China and India, and overlapping with croplands world-wide. China alone accounts for 25% of the global net increase in leaf area with only 6.6% of global vegetated area. The greening in China is from forests (42%) and croplands (32%), but in India is mostly from croplands (82%) with negligible contribution from forests (4.4%). China is engineering ambitious programs to conserve and expand forests with the goal of mitigating land degradation, air pollution and climate change. Food production in China and India has increased by over 35% since 2000 mostly due to increasing harvested area through multiple cropping facilitated by fertilizer use and surface/ground-water irrigation. Our results indicate that the direct factor is a key driver of the “Greening Earth”, accounting for over a third, and likely more, of the observed net increase in green leaf area. They highlight the need for realistic representation of human land-use practices in Earth system models.