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Title: Large-scale reforestation can increase water yield and reduce drought risk for water-insecure regions in the Asia-Pacific
Authors: Teo, Hoong Chen 
Raghavan Srivatsan V. 
He, Xiaogang 
Zeng, Zhenzhong
Cheng, Yanyan 
Luo, Xiangzhong 
Lechner, Alex M
Ashfold, Matthew J
Lamba, Aakash
Sreekar Rachakonda 
Zheng, Qiming 
Chen, Anping
Koh, Lian Pin 
Keywords: forest-water nexus
natural climate solutions
nature-based solutions
socio-ecological systems
water balance
water risk
water stress
Issue Date: 23-Aug-2022
Publisher: John Wiley and Sons Inc
Citation: Teo, Hoong Chen, Raghavan Srivatsan V., He, Xiaogang, Zeng, Zhenzhong, Cheng, Yanyan, Luo, Xiangzhong, Lechner, Alex M, Ashfold, Matthew J, Lamba, Aakash, Sreekar Rachakonda, Zheng, Qiming, Chen, Anping, Koh, Lian Pin (2022-08-23). Large-scale reforestation can increase water yield and reduce drought risk for water-insecure regions in the Asia-Pacific. Global Change Biology 28 (21) : 6385-6403. ScholarBank@NUS Repository.
Abstract: Large-scale reforestation can potentially bring both benefits and risks to the water cycle, which needs to be better quantified under future climates to inform reforestation decisions. We identified 477 water-insecure basins worldwide accounting for 44.6% (380.2 Mha) of the global reforestation potential. As many of these basins are in the Asia-Pacific, we used regional coupled land-climate modeling for the period 2041-2070 to reveal that reforestation increases evapotranspiration and precipitation for most water-insecure regions over the Asia-Pacific. This resulted in a statistically significant increase in water yield (p < .05) for the Loess Plateau-North China Plain, Yangtze Plain, Southeast China, and Irrawaddy regions. Precipitation feedback was influenced by the degree of initial moisture limitation affecting soil moisture response and thus evapotranspiration, as well as precipitation advection from other reforested regions and moisture transport away from the local region. Reforestation also reduces the probability of extremely dry months in most of the water-insecure regions. However, some regions experience nonsignificant declines in net water yield due to heightened evapotranspiration outstripping increases in precipitation, or declines in soil moisture and advected precipitation.
Source Title: Global Change Biology
ISSN: 1354-1013
DOI: 10.1111/gcb.16404
Appears in Collections:Staff Publications

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