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  • The current estimate of the soil organic carbon (SOC) pool in the northern permafrost region of 1672 Petagrams (Pg) C is much larger than previously reported and needs to be incorporated in global soil carbon (C) inventories. The Northern
  • Circumpolar Soil Carbon Database (NCSCD), extended to include the range 0-300 cm, is now available online. An aim is to provide quantitative uncertainty ranges for C pool estimates. Recent studies have greatly improved understanding of the regional patterns
  • , landscape distribution and vertical (soil horizon) partitioning of the permafrost C pool in the upper 3 m of soils. However, the deeper C pools in unconsolidated Quaternary deposits need to be better constrained. A general lability classification
  • of the permafrost C pool should be developed to address potential C release upon thaw. The permafrost C pool and its dynamics are beginning to be incorporated into Earth System models.
  • PING, C.-L.[b5]
  • TARNOCAI, C.[b7]
  • 2013
  • On Enlightment margins : geography, imperialism and mapping in Central Asia, c.1798-c.1838
  • 2013
  • This study was designed to assess changes in soil physical, chemical and biological properties after the establishment of C. odorata fallows in humid savannahs of Ivory Coast. Sampling sites were selected such that a portion of C. odorata fallow
  • was located next to the shrub savannah, the most common natural ecosystem in the area. Results revealed a rise of soil organic carbon, total nitrogen, total phosphorus, extractable calcium and magnesium in the first 10 cm of soil beneath the C. odorata fallow
  • relative to the savannah. Furthermore, the fallow was associated with high N-mineral pool. The infiltration capacity of water under C. odorata-based fallow was markedly high and soil macroinvertebrates, mainly earthworms, showed significant increases
  • in density and biomass. These results suggest that there are merits for the integration of C. odorata fallow in a cropping system for sustainable food production in the buffer zone of Lamto Reserve.
  • 2013
  • [b1] International Center for Tropical Agriculture (CIAT), IER, CRRA de Sotuba c/o ICRAF Sahel, Bamako, Mali
  • BASDEVANT, C.
  • BOUVIER, C.
  • CHAMPOLLION, C.
  • ESTOURNEL, C.
  • FLAMANT, C.
  • LUTOFF, C.
  • 2013
  • FLAMANT, C.
  • BASDEVANT, C.
  • BOUVIER, C.
  • CHAMPOLLION, C.
  • ESTOURNEL, C.
  • 2013
  • in the Apolobamba area in the Andean Plateau. High amount of total organic C stock, recalcitrant C contents and recalcitrance index highlight the importance of these high altitude grasslands as stable C reservoirs. A negative influence of domestic camelid grazing
  • on the decreasing of soil organic C stocks was observed. Therefore, there is an urgent need to establish soil protection strategies to keep the soil C reservoirs and to preserve the biodiversity and sustainable management of the vicuna in the Bolivian Andean
  • 2013
  • In this study, the AA. collected soil samples from different wetlands in the discontinuous permafrost zone of the Xiao Xing'an Mountains, northeastern China. Permafrost was only present in the bogs and fens in this zone. Soil C concentrations were
  • significantly correlated with total N concentrations and bulk density. Wetland type, soil depth, and incidence of fire affected soil C and total N concentrations, suggesting that vegetation changes in wetlands could alter the soil C and nutrient sequestration
  • processes under future global warming scenarios. However, the soil C storage and total N storage were not significantly difference in the upper soil layer for the wetlands types. The vegetation changing of bogs and fens would increase the depth
  • SONG, C.[b1]
  • 2013
  • World Meteorological Organization assessment of the purported world record 58°C temperature extreme at El Azizia, Libya (13 September 1922)
  • 56,7°C à Greenland Ranch (Vallée de la mort, Californie) le 10 juillet 1913. - (JPB)
  • 2013
  • Exemple de la capitale, Chisinau, où 190 à 200 décès surnuméraires ont été attribués à la chaleur. Les seuils de température susceptibles d'entraîner une surmortalité sont situés à 19°C pour les minima, à 25°C pour la moyenne journalière et à 31°C
  • 2013
  • Mobilities at a standstill : regulating circulation in London c. 1863-1870
  • LOPEZ GALVIZ, C.
  • 2013
  • Province, Northeast China. It is showed that short-term nitrogen addition does not significantly affect soil dissolved organic C (DOC) pool in marshland; Nitrogen addition can affect the soil biochemical process indirectly through vegetation
  • . It is concluded that nitrogen addition and vegetation removal significantly increased soil microbial biomass C (MBC) pool.
  • SONG, C.[b1]
  • HOU, C.[b2]
  • 2013
  • DESILVEY, C.
  • 2013
  • Au plus fort de l'été, les rejets des systèmes de refroidissement provoquent une faible hausse locale (0,25 à 1°C) de la température nocturne dans les rues. Mais si l'évolution actuelle se poursuit et que l'on privilégie de plus en plus les
  • dispositifs de climatisation rejetant dans l'air de la chaleur sèche, et non de la chaleur latente, l'élévation de la température nocturne pourrait rapidement atteindre 0,5 à 2°C, ce qui modifierait la structure et l'amplitude de l'îlot de chaleur urbain
  • DE MUNCK, C.
  • MARCHADIER, C.
  • 2013
  • Critical assessment of the 2°C min-1 threshold for thermal stress weathering
  • Rock surface temperature changes in excess of 2°C min-1 have been argued to result in permanent strain in rock. The single threshold value and the supposed importance of a rate of 2°C min-1 rock temperature change is rejected, based on lack
  • 2013
  • Alpes ; Carbone ; Datation C 14 ; Dégel ; Engadine ; Etude comparée ; Géochimie ; Limite supérieure de la forêt ; Montagne ; Pergélisol ; Propriétés du sol ; Sol ; Suisse ; Séquestration du carbone ; Végétation
  • Alps (The) ; C 14 dating ; Carbon ; Carbon sequestration ; Comparative study ; Geochemistry ; Mountain ; Permafrost ; Soil ; Soil properties ; Switzerland ; Thawing ; Tree line ; Vegetation
  • and its physical and chemical fractions and 3) estimated the age range of the bulk soil and stable C-fraction (radiocarbon dating). In south-eastern Switzerland, two areas above the timberline and one below the timberline (where isolated permafrost
  • ALEWELL, C.[b2]
  • KNEISEL, C.[b3]
  • 2013
  • De 1960 à 2009, les températures ont augmenté de 0,18°C par décennie, surtout dans les Andes et en saison sèche, tandis que les pluies ont progressé de 1965 à 1984, et diminué ensuite. Les tendances relevées sur les valeurs extrêmes sont conformes à
  • SEILER, C.
  • 2013
  • L'exploitation d'un très vaste corpus de documents variés permet d'affirmer qu'avec un écart à la normale de 4,7 à 6,8°C, les mois d'avril à juillet 1540 ont été en Suisse significativement plus chauds que ceux de 2003. La sécheresse y a également
  • PFISTER, C.
  • 2013
  • Par-delà une grande variabilité interannuelle, deux tendances sont mises en évidence depuis 1976 : augmentation de la fréquence des jours d'été « chauds » (plus de 8,2°C), et diminution de la fréquence des jours d'été « frais » (moins de 1,3°C
  • 2013
  • CLAVUS (C.) ; Carte ancienne ; Europe du Nord ; Groenland ; Histoire de la cartographie ; Moyen Age ; Siècle 14 ; Siècle 15
  • Research of early European geographical and historical concepts of the far north, as depicted on several tabulae made for Ptolemy's Geographia, is hampered by inadequate information about the Danish map-maker C. Clavus, the first person to draw
  • 2013