Reforestation is the natural or intentional restocking of existing forests and woodlands (forestation) that have been depleted, usually through deforestation.[1] Reforestation can be used to rectify or improve the quality of human life by soaking up pollution and dust from the air, rebuild natural habitats and ecosystems, mitigate global warming since forests facilitate biosequestration of atmospheric carbon dioxide,[2] and harvest for resources, particularly timber, but also non-timber forest products.
A similar concept, afforestation, another type of forestation, refers to the process of restoring and recreating areas of woodlands or forests that may have existed long ago but were deforested or otherwise removed at some point in the past or lacked it naturally (e.g., natural grasslands). Sometimes the term "re-afforestation" is used to distinguish between the original forest cover and the later re-growth of forest to an area. Special tools, e.g. tree planting bars, are used to make planting of trees easier and faster. Reforestation is used actively for climate change mitigation.
Yes, reforestation has a positive infleunce on precipitation.
Interesting topic on precipitation and reforestation. We assume that there must be a connection based on the fact that several studies suggested or even showed the effect of deforestation on precipitation. So could we reverse the implication on precipitation?
One good example I personally liked is Lean, J., & Warrilow, D. A. (1989). Simulation of the regional climatic impact of Amazon deforestation. Nature, 342(6248), 411-413.
Or something more recent: Bagley, J. E., Desai, A. R., Harding, K. J., Snyder, P. K., & Foley, J. A. (2014). Drought and deforestation: has land cover change influenced recent precipitation extremes in the Amazon?. Journal of Climate, 27(1), 345-361.
I think a more solid query should follow the relationship between reforestation and drought. Mohamed-Mourad Lafifi suggested some good papers on this direction.
But I think we should be more carefully on studying this relation and adapt the research on different regions' particularities, because sometime this relation is not so straightforward as it would seem (e.g. Cao, S., Tian, T., Chen, L., Dong, X., Yu, X., & Wang, G. (2010). Damage caused to the environment by reforestation policies in arid and semi-arid areas of China. AMBIO: A Journal of the Human Environment, 39(4), 279-283.)