@article{fdi:010073212,
  title = {{S}oil properties and organic matter quality in relation to climate and vegetation in southern {I}ndian tropical ecosystems},
  author = {{M}ani, {S}. and {M}erino, {A}. and {G}arcia-{O}liva, {F}. and {R}iotte, {J}ean and {S}ukumar, {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}oil organic matter ({SOM}) quantity and quality can be directly altered by climate, and {SOM} has been proposed as both a significant source and sink of carbon dioxide. {T}o understand the factors that influence {SOM}, the present study focuses on the relationship between precipitation and soil physical and chemical properties along a rainfall-vegetation gradient in a seasonally dry tropical forest in the {W}estern {G}hats, southern {I}ndia. {S}oil p{H} decreased with increasing rainfall, but soil organic carbon ({SOC}) and nitrogen ({N}) slightly increased. {R}ainfall had strong positive correlations with standing litter ({P}earson's r = 0.85), clay content (r = 0.69) and recalcitrant organic matter (r = 0.73) (all {P} < 0.05), and chemical properties {SOC} (r = 0.85), {N} (r = 0.71), magnesium (r = 0.65), iron (r = 0.64) and zinc (r = 0.75) (all {P} < 0.05). {T}he heavy fraction, which was bound to mineral particles, comprised more than 60% of the {SOM} in all sites. {T}he heavy fraction was positively correlated with rainfall and showed a higher proportion in the high rainfall forest soils. {T}hermal recalcitrant organic matter, such as carbohydrates - and other aliphatic compounds, such as lignin and polyphenols - were also higher in high rainfall forest soils, suggesting a greater effect of {SOM} turnover. {T}he {SOM} content and quality were lower in the dry forest soils, which were mainly limited by annual precipitation, but clay content also contributed significantly to {SOC} storage.},
  keywords = {density fractionation ; {M}udumalai ; soil carbon ; soil texture ; thermal stability ; vegetation types ; {INDE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{S}oil {R}esearch},
  volume = {56},
  numero = {1},
  pages = {80--90},
  ISSN = {1838-675{X}},
  year = {2018},
  DOI = {10.1071/sr16262},
  URL = {https://www.documentation.ird.fr/hor/fdi:010073212},
}