The Human Impacts Database

A collection of useful numbers for quantifying the impacts of the human presence on Earth.

This quantity is a single measurement of the quantity at a given point in time (2001 — 2015).


Value:		(7.5 ± 0.9) × 10¹⁰ m² / yr see this value in other units This is equivalent to... (7.5 ± 0.9) × 10⁴ km² / yr (7.5 ± 0.9) × 10⁶ Ha / yr
HuID:		24388
Relevant Year(s):		2001 — 2015
Summary:		Average area of disrupted forest land generated per year between 2001 - 2015 from shifting agriculture. Forest-area loss due to shifting agriculture is defined as "small-to-medium-scale forest and shrubland conversion for agriculture that is later abandoned and followed by subsequent forest regrowth."
Method:		Value is calculated from map based measurements that commodity-driven deforestation is ≈ 5 MHa/yr accounting for 25% of all forest disruption (see HuID: 96098 ) and that 24 ± 3% of all forest disruption comes from shifting agriculture. Uncertainty represents a 95% confidence interval. See Table 1 and Figure 3 of source material.
Source:		Curtis, P. G., Slay, C. M., Harris, N. L., Tyukavina, A., Hansen, M. C. Classifying drivers of global forest loss. Science (2018)
Dataset:		Average forest loss by driver (2001 — 2015) (Curtis2018_table1_drivers_forest_loss.csv) global resolution
Original Data License:		Science Journals Default License
Added By:		gchure