The Texas General Land Office, George P Bush, Commissioner
There is excessive confidence that aridity will improve in some locations, but no proof for a projected global trend in dryland aridity . Future climate change is projected to extend the potential for water driven soil erosion in many dryland areas , leading to soil organic carbon decline in some dryland areas. Historical modifications in anthropogenic land cover have resulted in a imply annual global warming of surface air from biogeochemical effects , dampened by a cooling from biophysical effects . Biogeochemical warming outcomes from increased emissions of GHGs by land, with model-based estimates of +0.20 ± 0.05°C and +0.24 ± zero.12°C – dynamic global vegetation models as properly as an observation-based estimate of +0.25 ± zero.10°C.
Forest management that reduces carbon stocks of forest land additionally results in emissions, but international estimates of these emissions are unsure. Cropland soils have lost 20–60% of their natural carbon content prior to …