@article{fdi:010067763,
  title = {{L}ong-term annual burning of grassland increases {CO}2 emissions from soils},
  author = {{A}bdalla, {K}. and {C}hivenge, {P}. and {E}verson, {C}. and {M}athieu, {O}. and {T}hevenot, {M}. and {C}haplot, {V}incent},
  editor = {},
  language = {{ENG}},
  abstract = {{G}rasslands have potential to mitigate against climate change because of their large capacity to store soil organic carbon ({SOC}). {H}owever, the long-term impact of grassland management such as burning, which is still common in many areas of the world, on {SOC} is still a matter of debate. {T}he objective of this study was to quantify the longterm effects of annual burning on {CO}2 output from soils and {SOC} stocks. {T}he study was performed on a 62 years old field trial comparing annual burning ({AB}) to no burning associated with tree encroachment ({NB}), and to annual mowing ({AM}) with all treatments laid out in randomized block design with three replicates per treatment. {CO}2 emissions from soil were continuously measured over two years and were correlated to soil chemical and physical properties. {AB} and {AM} produced 30 and 34% greater {CO}2 emissions from soil than {NB} (1.80 +/- 0.13 vs. 234 +/- 0.18 and 2.41 +/- 0.17 g {C}-{CO}2 ,m(-2) d(-1) for {NB}, {AB} and {AM} respectively). {AB} and {AM} also produced greater {CO}2 emissions from soil and per gram of soil carbon (1.32 +/- 0.1 and 135 +/- 0.1 mg {C}-{CO}2 g {C}-1 d(-1), respectively) than {NB} (1.05 +/- 0.07 mg {C}-{CO}2 g {C}-1 d(-1)), which corresponded to significant differences of respectively 26% and 29%. {O}verall, {CO}2 emissions from soil (per m(2)) significantly increased with soil water content (r = 0.72) followed by {SOC} stocks (r = 0.59), {SOC} content (r = 0.50), soil bulk density (r = 0.49), soil temperature (r = 0.47), {C}:{N} ratio (r = 0.46) and mean weight diameter (r = 038). {T}hese findings suggest that long-term annual burning increases {CO}2 output from soils. {A}dditional greenhouse gases emissions from burning itself and alternative grassland management techniques were finally discussed.},
  keywords = {{G}rassland management ; {B}urning ; {S}oil carbon ; {S}oil respiration ; {C}arbon cycle ; {AFRIQUE} {DU} {SUD}},
  booktitle = {},
  journal = {{G}eoderma},
  volume = {282},
  numero = {},
  pages = {80--86},
  ISSN = {0016-7061},
  year = {2016},
  DOI = {10.1016/j.geoderma.2016.07.009},
  URL = {https://www.documentation.ird.fr/hor/fdi:010067763},
}