Habitat restoration
China’s planted forests net far less than natural ones
Open access · cc by · source: Europe PMC
After water, land, and management costs, afforestation’s net ecosystem-service value is 55.9% lower per hectare than natural forest.
Key findings
In 2014 natural forests covered 69.2×10^6 ha and planted forests 147.9×10^6 ha, with total VES Ɏ9.6×10^12. Accounting for costs cut national NVES 35.9% to Ɏ6.1×10^12. Afforestation netted Ɏ15.9×10^3 ha−1, 55.9% less than natural forest. Only 20.6% of 3.4×10^6 km2 planted since 1952 still survived. Twelve provinces had negative planted-forest NVES.
Methodology
Authors combined published forest ecosystem-service values with timber, land-rent, water (evapotranspiration), and pest/fire-control costs to compute net value of ecosystem services (NVES) for China’s natural versus planted forests, using 1952–2014 inventory and provincial water prices.
Limitations
Water prices were linearly interpolated between Beijing and Tibet, not market observations everywhere. Survival of natural forest was assumed 100%. Timber harvest is largely prohibited, so timber income is a hypothetical add-on. The analysis is provincial, not stand-scale.
How this study connects
Role on claims
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After water, land, and management costs, afforestation’s net ecosystem-service value is 55.9% lower per hectare than natural forest.
Evidence for the claim as stated.
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