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  • Can δ13C abundance, water-soluble carbon, and light fraction carbon be potential indicators of soil organic carbon dynamics in Zoigê wetland?
  • Analyse de régression ; Analyse isotopique ; Carbone ; Carbone 13 ; Changement climatique ; Chine ; Dégradation de l'environnement ; Milieu humide ; Montagne ; Plateau ; Propriétés du sol ; Qinghai ; Tibet
  • Carbon ; Carbon 13 ; China ; Climatic change ; Environmental degradation ; Humid environment ; Isotope analysis ; Mountain ; Plateau ; Qinghai ; Regression analysis ; Soil properties ; Tibet
  • In this study, four wetland sites and one degraded wetland site in the Zoigê alpine wetland, located at the Qinghai-Tibet Plateau, were selected to investigate the relationships of stable isotope and labile organic carbon dynamics with groundwater
  • elevation or water table level. The AA.also examine if the δ13C abundance, soil water soluble organic carbon (WSOC), light fraction organic carbon (LFOC), can be used as potential indicators of soil organic carbon (SOC) dynamics in these wetland sites
  • 2014
  • Urban carbon footprint and carbon cycle pressure : The case study of Nanjing
  • Action anthropique ; Chine ; Chine de l'Est ; Cycle du carbone ; Développement durable ; Empreinte écologique ; Environnement ; Environnement urbain ; Modèle ; Nanjing ; Stratégie d'acteurs ; Utilisation du sol
  • Carbon cycle ; China ; Decision making process ; Eastern China ; Ecological footprint ; Environment ; Human impact ; Land use ; Model ; Sustainable development ; Urban environment
  • Based on city level, this paper estimated carbon emissions and carbon footprint of Nanjing city, analyzed urban carbon footprint intensity and carbon cycle pressure and discussed the influencing factors of carbon footprint through LMDI decomposition
  • model. The total carbon emissions and footprint of Nanjing increased rapidly since 2000. Economic development, population and industrial structure are promoting factors of carbon footprint of Nanjing, while the industrial carbon footprint intensity
  • 2014
  • Spatial differences and multi-mechanism of carbon footprint based on GWR model in provincial China
  • Analyse spatiale ; Changement climatique ; Chine ; Empreinte carbone ; Gestion de l'environnement ; Modèle ; Réchauffement climatique ; Système d'information géographique ; Urbanisation
  • Carbon footprint ; China ; Climatic change ; Climatic warming ; Environmental management ; Geographical information system ; Model ; Spatial analysis ; Urbanization
  • Based on the energy consumption, integrated with the Top-Down life cycle approach and geographically weighted regression (GWR) model, this paper analyzed the spatial differences and multi-mechanism of carbon footprint in provincial China in 2010
  • . Firstly, the AA. calculated the amount of carbon footprint of each province using “Top-Down” life cycle approach and found that there were significant differences. Secondly, with the aid of GIS and spatial analysis model (GWR model), this paper had
  • unfolded that the expansion of economic scale is the main driver of the rapid growth of carbon footprint. Thirdly, developing low-carbon economies and low-carbon industries, as well as advocating low-carbon city construction and improving carbon efficiency
  • would be the primary approaches to inhibit the rapid growth of carbon footprint. Moderately controlling the economic scale and population size would also be required to alleviate carbon footprint.
  • 2014
  • Practices, programs and projects of urban carbon governance : perspectives from the Australian city
  • Australie ; Ecologie politique ; Economie du carbone ; Economie urbaine ; Gestion urbaine ; Gouvernementalité ; Projet
  • Australia ; Carbon economy ; Governmentality ; Political ecology ; Project ; Urban administration ; Urban economy
  • On étudie la gouvernance des transitions vers des villes plus économes en carbone. On s'interroge sur la diversité de ce que l'on entend par la gouvernance du carbone dans les villes. On analyse un audit d'initiatives de gouvernance du carbone dans
  • les villes australiennes. On suggère quatre programmes gouvernementaux distinctifs. Le paysage émergent de l'Australie en matière de gouvernance urbaine du carbone reproduit autant les mises en ordre de la gouvernance existants qu'il contient des
  • 2014
  • Combining LPJ-GUESS and HASM to simulate the spatial distribution of forest vegetation carbon stock in China
  • Chine ; Cycle du carbone ; Distribution spatiale ; Ecosystème ; Forêt ; Gestion de l'environnement ; Modèle ; Simulation ; Séquestration du carbone
  • Carbon cycle ; Carbon sequestration ; China ; Ecosystem ; Environmental management ; Forest ; Model ; Simulation ; Spatial distribution
  • This paper, based on High Accuracy Surface Modeling (HASM), proposes a forest vegetation carbon storage simulation method. This new method employs the output of LPJ-GUESS model as initial values of HASM and uses the inventory data as sample points
  • of HASM to simulate the distribution of forest carbon storage in China. This study also adopts the seventh forest resources statistics of China as the data source to generate sample points, and it also works as the simulation accuracy test. The simulation
  • result indicates that the southwestern mountain region and the northeastern forests are the important forest carbon reservoirs in China. Compared with the former value (1975-1995), it manifests that the carbon storage of the 2 regions do increase clearly
  • . The results of this research show that the large-scale reforestation in the last decades in China attains a significant carbon sink.
  • 2014
  • The response of soil organic carbon and nitrogen 10 years after returning cultivated alpine steppe to grassland by abandonment or reseeding
  • Agropédologie ; Azote ; Carbone ; Chine ; Formation herbacée ; Gansu ; Géochimie ; Montagne ; Sol cultivé ; Steppe ; Sunan ; Utilisation du sol
  • Agropedology ; Carbon ; China ; Cultivated land ; Gansu ; Geochemistry ; Grassland ; Land use ; Mountain ; Nitrogen ; Steppe
  • This study reported on the effects on the soil carbon and nitrogen status of alpine steppe soils from 2 restoration methods, reseeding grasses and abandonment. The AA. selected 4 study sites on the north slope of Qilian Mountain : native alpine
  • steppe, cropland of 40 years, former oat cropland reseeded with the grass (Elymus sibiricus) 10 years ago, and cropland abandoned 10 years ago. This experiment measured the soil physical, carbon and nitrogen properties of all selected plots. Ten years
  • after restoration by reseeding or abandonment had resulted in the return of cropland to a perennial grass community through succession, with total soil carbon and nitrogen returning to more than 70% of the original grassland plots. The reseeding method
  • benefited soil carbon and nitrogen more than abandonment after 10 years. The light fraction organic carbon, microbial biomass carbon and microbial biomass nitrogen recovered more quickly than soil organic carbon and total soil nitrogen. In conclusion, the AA
  • 2014
  • On the use of loss-on-ignition techniques to quantify fluvial particulate organic carbon
  • Analyse quantitative ; Carbone ; Charge en suspension ; Cours d'eau ; Cycle du carbone ; Ecosystème ; England ; Royaume-Uni ; Technique de recherche
  • Carbon ; Carbon cycle ; Ecosystem ; England ; Quantitative analysis ; Research technique ; Stream ; Suspended load ; United Kingdom
  • The AA. compare particulate organic carbon (POC) measurements derived from 2 commonly-used techniques; a simple combustion and loss-on-ignition (LOI) technique, and an oxidative–combustion and carbon dioxide (CO2) detection technique. The techniques
  • 2014
  • Carbon dynamics in topsoil and subsoil along a cultivated toposequence
  • Carbone ; Catena ; Danemark ; Dioxyde de carbone ; Géochimie ; Pente de versant ; Propriétés du sol ; Sol ; Sol cultivé ; Température du sol
  • Carbon ; Carbon dioxide ; Catena ; Cultivated land ; Denmark ; Geochemistry ; Slope gradient ; Soil ; Soil properties ; Soil temperature
  • This study aimed to investigate soil organic carbon (SOC) dynamics in topsoil (5 cm) and subsoil horizons (40 and 80 cm) at shoulderslope and footslope positions in a toposequence in a Danish winter wheat field. In addition, SOC was quantified
  • for 20-cm depth intervals to 100 cm depths. Over a 1 year period, gas samples for carbon dioxide (CO2) and oxygen (O2) analyses were collected from 7 different soil depths (5 to 80 cm) at the shoulder- and footslope positions. Soil surface CO2 fluxes were
  • 2014
  • Climatic and topographic controls on soil organic matter storage and dynamics in the Indian Himalaya : Potential carbon cycle–climate change feedbacks
  • Analyse isotopique ; Carbone ; Changement climatique ; Climat ; Cycle du carbone ; Haute montagne ; Himalaya ; Inde ; Montagne ; Propriétés du sol ; Sol ; Végétation ; Zone intertropicale
  • Carbon ; Carbon cycle ; Climate ; Climatic change ; High mountain ; Himalaya ; India ; Isotope analysis ; Mountain ; Soil ; Soil properties ; Tropical zone ; Vegetation
  • To evaluate the importance of C storage in soils in high mountain regions, regional soil organic carbon (SOC) abundance was examined across the Himalaya of northern India. Soil samples were collected from the Kulu Lesser Himalaya, Lahul Himalaya
  • precipitation was a greater influence on SOC than altitude. Stable carbon isotope data indicate that C3 vegetation has been consistently dominant in the region for the last ~ 7000 years. Rates of SOC accumulation and turnover are influenced greatly by variations
  • 2014
  • Detection of active oxalate–carbonate pathway ecosystems in the Amazon Basin : Global implications of a natural potential C sink
  • Alto Beni ; Amazonas ; Amérique du Sud ; Biogéochimie ; Bolivie ; Cycle du carbone ; Ecosystème ; Forêt ; Zone intertropicale
  • Amazonas State ; Biogeochemistry ; Bolivia ; Carbon cycle ; Ecosystem ; Forest ; South America ; Tropical zone
  • The oxalate–carbonate pathway (OCP) is a biogeochemical process, which has been described in Milicia excelsa tree ecosystems of Africa. The aim of this study is twofold : 1) to make an inventory of trees in the Amazon Basin presenting some
  • of the characteristics associated to an active OCP; and 2) to validate a field methodology for the screening and characterization of OCP systems that can be applied worldwide. This study highlights the implication of OCP ecosystems on carbon and calcium biogeochemical
  • coupled cycles. As previously mentioned for M. excelsa tree ecosystems in Africa, carbonate accumulations observed in the Bolivian tropical forest could be extrapolated to part or the whole Amazon Basin and might constitute an important reservoir that must
  • be taken into account in the global carbon balance of the Tropics.
  • 2014
  • Palustrine carbonates and pedogenic calcretes in the Çal basin of SW Anatolia : Implications for the Plio-Pleistocene regional climatic pattern in the eastern Mediterranean
  • Analyse isotopique ; Anatolie ; Carbonate ; Carbone 13 ; Croûte calcaire ; Domaine méditerranéen ; Oxygène 18 ; Paléo-environnement ; Paléoclimat ; Pliocène ; Pléistocène ; Sédimentologie ; Turquie
  • Anatolia ; Calcrete ; Carbon 13 ; Carbonate ; Isotope analysis ; Mediterranean area ; Oxygen 18 ; Palaeo-environment ; Palaeoclimate ; Pleistocene ; Pliocene ; Sedimentology ; Turkey
  • deposits above as a single sedimentary unit resting on top of floodplain fines and restricted to the basin center. The stable isotopic analysis of the palustrine carbonates and pedogenic calcretes displays a wide range of values and the lack of significant
  • δ18 O-δ13 C may indicate subhumid conditions or significant diagenetic alteration. The δ13 C values of these carbonates, organic δ13 C data from calcretes and floral remains indicate that the landscapes were dominated by C3 forest plants.
  • 2014
  • On the borders of the market : EU emissions trading, energy security, and the technopolitics of carbon leakage
  • Changement climatique ; Energie ; Estonie ; Europe ; Intégration européenne ; Intégration marchande ; Marchandisation ; Marché du carbone ; Néolibéralisme ; Pays Baltes ; Politique énergétique ; Rôle de l'Etat ; Sécurité énergétique ; Territoire
  • Baltic Republics ; Carbon market ; Climatic change ; Commodification ; Energy ; Energy policy ; Energy security ; Estonia ; Europe ; European integration ; Market integration ; Neo liberalism ; Role of the State ; Territory
  • Compte tenu de la concentration régionale et de l'intégration du marché européen du carbone, on considère un compromis entre le climat et les politiques énergétiques selon les règles commerciales de l'électricité postérieures à 2012. La résistance
  • des Etats frontaliers de l'UE à la tarification du carbone a permis aux pertes en carbone d'être re-conceptualisées comme une menace de transfert de la production d'électricité à des fournisseurs non marchands. La politique de répartition des
  • allocations d'émissions est renforcée par les territoires du marché qui conduisent les formes néolibérales de gestion du changement climatique à des conflits avec les revendications étatiques de souveraineté. Les expériences de commercialisation du carbone
  • 2014
  • Impact of land use change on profile distributions of soil organic carbon fractions in the Yanqi Basin
  • Carbone ; Chine ; Cycle du carbone ; Domaine aride ; Géochimie ; Propriétés du sol ; Sol cultivé ; Utilisation du sol ; Xinjiang
  • Arid area ; Carbon ; Carbon cycle ; China ; Cultivated land ; Geochemistry ; Land use ; Soil properties ; Xinjiang
  • A study was carried out to evaluate the impacts of land use change on soil organic carbon (SOC) fractions in the Yanqi Basin, northwest China. Soil samples were collected from 24 profiles in cropland and native land, and labile, semi-labile
  • , and recalcitrant organic carbon were measured. The results highlighted that : All SOC fractions were higher on the cropland than on the native land; The greatest increase was found in the recalcitrant SOC fraction. This study suggests that converting native land
  • 2014
  • Stable isotopic composition of carbonate pedofeatures in soils along a transect in the southern part of European Russia
  • Analyse isotopique ; Carbonate ; Datation C 14 ; Domaine aride ; Domaine semi-aride ; Europe de l'Est ; Géochimie ; Paléo-environnement ; Paléoclimat ; Paléosol ; Pédogenèse ; Quaternaire ; Russie d'Europe ; Ukraine ; Végétation
  • Arid area ; C 14 dating ; Carbonate ; Eastern Europe ; European part of Russia ; Geochemistry ; Isotope analysis ; Palaeo-environment ; Palaeoclimate ; Palaeosol ; Pedogenesis ; Quaternary ; Semi-arid area ; Ukraine ; Vegetation
  • The aim of this research was to obtain systematic data on stable isotopic compositions of C and O in carbonate pedofeatures in modern soils of the European part of Russia. The 7 key-sites were located in Lipetsk, Kursk, Voronezh, Rostov, Manych
  • and Stavropol regions in Russia, and Samara in Ukraine. This transect represents the changes of climate (MAP and MAT) and vegetation (increasing of C4-plants portion under the domination of C3-vegetation). Isotopic composition of soft carbonates, corresponding
  • to modern physiography, is usually slightly different from those of hard nodules, reflecting earlier environment. Carbonates with younger and older radiocarbon age were identified. Meanwhile, the carbonates with older radiocarbon age generally have similar
  • stable isotopic compositions as the carbonates with younger 14 C age. Three bioclimatic types of environment were identified according to the stable isotopic compositions of carbonates : wet/cool, wet/warm, and dry/warm areas.
  • 2014
  • Sources and transport of organic carbon from the Dongjiang River to the Humen outlet of the Pearl River, southern China
  • Action anthropique ; Analyse isotopique ; Bassin-versant ; Carbone 13 ; Chine ; Chine du Sud ; Cycle du carbone ; Dégradation de la végétation ; Estuaire ; Géochimie ; Mangrove ; Phytoplancton ; Plante cultivée ; Transport sédimentaire ; Variation
  • Carbon 13 ; Carbon cycle ; China ; Cultivated plants ; Estuary ; Geochemistry ; Human impact ; Isotope analysis ; Mangrove ; Phytoplankton ; Seasonal variation ; Sediment transport ; Southern China ; Vegetation degradation ; Watershed ; Zhu Jiang
  • This paper presents bulk total organic carbon (TOC) from the Dongjiang catchment to the adjacent Humen outlet, and discusses the applicability of δ13C and ratio of carbon to nitrogen (C/N) as indicators for sources of organic matter in the surface
  • sediments. Survey results showed that organic carbon concentration in summer were higher than in the winter. An elevated trend of TOC occurred along the river to the Humen outlet in both surveys, and the highest mean values of dissolved and particular
  • organic carbon (DOC)and (POC) were observed in the urban deltaic region in summer flood flow. Results suggest that POC in the 3 zones of upstream-delta-outlet dominantly came from riverbank soil, phytoplankton and agricultural C3 plants in winter, whereas
  • 2014
  • Soil carbon and silicon pools across an un-drained toposequence in central Ohio
  • Azote ; Carbone ; Catena ; Eau du sol ; Etats-Unis ; Gahanna ; Géochimie ; Milieu humide ; Ohio ; Pente de versant ; Propriétés du sol ; Sol
  • Carbon ; Catena ; Geochemistry ; Humid environment ; Nitrogen ; Ohio ; Slope gradient ; Soil ; Soil properties ; Soil water ; United States of America
  • This study focused on soil carbon (organic and inorganic) and silicon pools across a soil toposequence encompassing all landscape positions (summit, shoulder, backslope, footslope, and toeslope), and for the soil profile. A soil toposequence
  • that the un-drained closed depression enhances the soil organic carbon (SOC) accumulation across the integrated toposequence, in particular at the lower landscape positions (footslope and toeslope), and it favors the formation of desired soil structure
  • 2014
  • [b2] Carbon Management and Sequestration Center, School of Environment and Natural Resources, Ohio State Univ., Columbus, Etats-Unis
  • Effect of cactus pear cultivation after Mediterranean maquis on soil carbon stock, δ13C spatial distribution and root turnover
  • Carbone ; Carbone 13 ; Domaine méditerranéen ; Ecosystème ; Italie ; Maquis ; Matière organique ; Propriétés du sol ; Sicilia ; Sol cultivé ; Utilisation du sol ; Verger
  • Carbon ; Carbon 13 ; Cultivated land ; Ecosystem ; Italy ; Land use ; Mediterranean area ; Mediterranean scrub vegetation ; Orchard ; Organic materials ; Sicilia ; Soil properties
  • The aim of this work was to investigate the effect of land use change from maquis to agriculture on soil organic carbon (SOC) stock and its spatial distribution in a Mediterranean system. Three Mediterranean land use systems (seminatural vegetation
  • 2014
  • Buried black soils on the slopes of Mt. Kilimanjaro as a regional carbon storage hotspot
  • Ecosystème ; Forêt tropicale ; Kilimanjaro ; Matière organique ; Montagne ; Paléosol ; Pente de versant ; Propriétés du sol ; Sol noir ; Séquestration du carbone ; Tanzanie ; Volcan
  • Black soil ; Carbon sequestration ; Ecosystem ; Mountain ; Organic materials ; Palaeosol ; Slope gradient ; Soil properties ; Tanzania ; Tropical rain forest ; Volcano
  • In this study, the AA. investigated in detail the soil organic carbon (SOC) content and SOC stocks in soil profiles (mostly Andosols) along 2 altitudinal transects, situated on both the humid southern slopes and on the drier northern slopes
  • of the Kilimanjaro. These paleosol sequences are characterized by high soil organic carbon contents. SOC stocks per square meter exceed those of typical Andosols and Chernozems. As compared to the SOC storage in the surrounding savannah soils of the Maasai Steppe
  • , the buried black soils constitute a distinctive regional carbon storage hotspot.
  • 2014
  • Storage and depth distribution of organic carbon in volcanic soils as affected by environmental and pedological factors
  • Canaries ; Carbone ; Matière organique ; Modèle ; Pente de versant ; Pluie ; Propriétés du sol ; Sol ; Sol volcanique ; Système racinaire ; Séquestration du carbone ; Température ; Tenerife
  • Canary Islands ; Carbon ; Carbon sequestration ; Model ; Organic materials ; Rainfall ; Root system ; Slope gradient ; Soil ; Soil properties ; Temperature ; Volcanic soil
  • It has been recognised that volcanic soils, particularly Andosols, can store large amounts of soil organic carbon (SOC). The AA. analysed the SOC contents in relation to intrinsic (soil type and relevant soil properties : texture and pH
  • ), topographic (slope) and biotic (plant-mediated) factors. The results indicate that under humid conditions, low pH and anoxia within microaggregates can enhance SOC storage. The distributions of root carbon and SOC appeared to be closely interrelated
  • 2014
  • Characterisation of three regimes of collapsing arctic ice complex deposits on the SE Laptev Sea coast using biomarkers and dual carbon isotopes
  • Analyse isotopique ; Arctique ; Carbone ; Cycle du carbone ; Dégel ; Effondrement ; Erosion littorale ; Géochimie ; Humidité du sol ; Laptevyh more ; Littoral ; Russie d'Asie ; Réchauffement climatique ; Sibir' ; Thermokarst ; Zone froide
  • Arctic Region ; Asian part of Russia ; Carbon ; Carbon cycle ; Climatic warming ; Coastal environment ; Coastal erosion ; Cold area ; Collapse structures ; Geochemistry ; Isotope analysis ; Laptev Sea ; Siberia ; Soil moisture ; Thawing
  • This study identifies signs of organic carbon (OC) degradation in 3 Siberian Ice Complex Deposits (ICD) regimes of coastal erosion through elemental, isotopic and molecular analyses. The degree of erosion appears to determine the extent
  • for transferring old OC into the rapidly cycling atmosphere-biosphere carbon pools.
  • 2014