Welcome to The 7th International CO2 Conference Web Site!

     Information
 
Overview
Conference
Themes
Conference
History
Scientific Tours
Press Contacts
Venue
Visas
Scientific
Committee
Planning
Committee
Poster
Information
Hosts
Sponsors
Supporting
Businesses
Download
Schedule
Charles Keeling
Tellus
Help

     Latest Comments
· Re: Conference Feedback
by Georgii.Alexandrov
· Re: Conference Feedback
by Peter.Koehler
· Re: Conference Feedback
by Ankur.Desai
· Re: Conference Feedback
by guest
· Re: Conference Feedback
by Steven.Oncley
· Re: THE CHANGING CARBON CYCLE
by Jose.Navar-Chaidez
· Re: PERSISTENCE OF NITROGEN LIMITATION OVER TERRESTRIAL CARBON UPTAKE
by Jose.Navar-Chaidez
· Re: SPATIAL AND TEMPORAL PATTERNS OF CO2, CH4 AND N2O FLUXES IN THE TERRESTRIAL ECOSY
by Georgii.Alexandrov
· Re: CLIMATE CHANGE: DESIGNING AN EFFECTIVE RESPONSE
by Connie.Uliasz
· Re: CLIMATE CHANGE: DESIGNING AN EFFECTIVE RESPONSE
by Jonathan.Callahan




[ Proceedings Main | Upload Proceeding | Popular ]

Category: Main/Abstracts/Land Use and the Terrestrial Carbon Cycle


Sort Proceedings by: Title (A\D) Date (A\D) Rating (A\D) Popularity (A\D) Author (A\D)
Resources currently sorted by: Popularity (Least to Most Hits)


  SIMULATING EFFECTS OF LAND USE CHANGE ON CARBON FLUXES WITH A PROCESS MODEL IN SUBTROPICAL ... 
Description:

A process model was used to simulate changes in the carbon fluxes and stocks at a site that was transformed a grassland to a plantation at Qian Yanzhou. The total carbon storage of the zonal vegetation (evergreen broadleaf forest) was simulated and taken as the saturated carbon storage value of that site. The simulated vegetation density and soil organic carbon (SOC) were compared with the observed. The simulates indicate that after 20 years planting of the needle leaf forests (Pinus Massoniana, Cunninghamia lanceolata and Pinus elliottii ect) on ex-grassland, the net carbon storage increase in the plantation was 8.03 kg C/m2,in which the vegetation carbon storage increased 8.5334 kg C/m2 and the soil carbon storage decreased 0.518 kg C/m2. The total carbon storage of 20 years plantation is 58.6% of the saturated value. The study also shows that between 0 and 7 years of land use change the soil carbon was decreased and between 7 and 20 years it was predicted to increase slowly.


Author's Names: M. Huang, J. Ji, M. Cao, and K. Li
Filesize: 51.59 Kb
Added on: 08-Aug-2005 Downloads: 17
Home Page | Comment on Proceeding | Details

  EVALUATION OF INTER-ANNUAL CARBON BUDGET FOR A SUB-ARCTIC BLACK SPRUCE FOREST BASED ON ... 
Description:

Measurements of CO2 flux were made by the eddy correlation method over a sub-arctic black spruce forest in interior Alaska. Observed CO2 budget were sinks of -531~-247 and -219~0 g CO2 m-2 year-1 during 2003 and 2004, respectively. The broad range is caused by uncertainty regarding assessment of the nocturnal fluxes. The sequestration of CO2 during 2004 was limited by high temperature, drought or low light intensity conditions. The net CO2 flux is in a delicate balance between two large terms, which would shift from sink to source due to global warming.


Author's Names: M.Ueyama, Y.Harazono, R.Okada, and A.Miyata
Filesize: 169.91 Kb
Added on: 08-Aug-2005 Downloads: 18
Home Page | Comment on Proceeding | Details

  EFFECTS OF DISTURBANCE AND CLIMATE CHANGE ON CARBON BALANCE IN CANADA’S FORESTS AND WETLANDS 
Description:

Model simulations indicated that Canada’s forests and wetlands acted as a carbon (C) sink of 112 Tg C
yr-1 averaged during 1901-1998. Wetlands was a crucial contributor to this sink (50 Tg C yr-1). Disturbance history determined the decadal temporal pattern of C balance. Nondisturbance factors enhanced C accumulations in Canada’s forests and wetlands in the last century. The enhancement of each nondisturbance factor on C uptake changed temporally.


Author's Names: W. Ju, and J. M. Chen
Filesize: 84.65 Kb
Added on: 29-Jul-2005 Downloads: 18
Home Page | Comment on Proceeding | Details

  DIRECT COMPARISON OF EDDY COVARIANCE AND BOWEN RATIO ENERGY BALANCE MEASUREMENTS OF CO2 FLUXES ... 
Description:
The objectives of this study were to (1) compare annual mass and energy fluxes of sensible carbon dioxide (CO2), heat flux density (H), and latent heat flux density (LE) from Campbell Scientific, Inc. (CSI) manufactured eddy covariance (EC) and Bowen Ratio/energy balance (BREB) instrumentation in a tallgrass prairie site and (2) make similar short term (5-14 d) comparison in other grazing ecosystems throughout the western United States. The long-term tallgrass prairie site was located in central Oklahoma with measurements being made from August 2001- October 2004, while the short-term sites were located in Oregon, Colorado, Idaho, North Dakota, and Arizona during the summers of 2003 and 2005. Results from the long-term (< 36-month) co-located EC and BREB units indicated that both systems demonstrated similar seasonal patterns, yet the EC consistently failed to close the energy balance by 25-35% when compared to the BREB.

Author's Names: G.L. Doyle, W.A. Dugas, and H. Mayeux
Filesize: 13.37 Kb
Added on: 05-Aug-2005 Downloads: 18
Home Page | Comment on Proceeding | Details

  CARBON STORAGE BY ASPEN-DOMINATED FORESTS OF THE UPPER GREAT LAKES REGION: PAST, PRESENT AND FUTURE 
Description:
Aspen-dominated forests occupy >4 million ha in the upper Great Lakes region of the United States and are an important reservoir for carbon (C). Although harvesting and agriculture over the past century depleted C stored in these forests, independent estimates suggest that forests in the upper Great Lakes now are C sinks [Lee et al., 1999; Barford et al., 2001; Birdsey et al, 2000]. However, C storage by forests within the region varies considerably due to site disturbance history, forest age, and interannual climate variability. 

Author's Names: C.M. Gough, C.S. Vogel, H.P. Schmid, H-B. Su, P.S. Curtis
Filesize: 41.24 Kb
Added on: 29-Jul-2005 Downloads: 19
Home Page | Comment on Proceeding | Details

  HISTORICAL CHANGES IN CARBON STORAGE OF THE EASTERN UNITED STATES: UNCERTAINTIES ASSOCIATED ... 
Description:
Process-based models are important tools in assessments because they are able to integrate mechanisms responsible for changes in carbon storage. Retrospective model analyses are important for clarifying land use impacts on carbon storage estimates. The objectives of our study were to: 1) develop a land use model that allows annual conversion of native ecosystems to agriculture and creation of age cohorts following harvest and cropland abandonment from 1600 to 2002; 2) compare modeled age class distribution with independent inventory data on stand age distributions, and 3) use these data sets to drive the Terrestrial Ecosystem Model (TEM) and evaluate how assumptions about soil degradation and CO2 fertilization influence estimates of changes in carbon storage of the eastern US.

Author's Names: L.A. Joyce, A.D. McGuire, D.P. Coulson, J. Clein, T. Bumside
Filesize: 15.12 Kb
Added on: 29-Jul-2005 Downloads: 19
Home Page | Comment on Proceeding | Details

  FLUXES OF CO2, N2O, AND CH4 IN A COLD-TEMPERATE GRASSLAND SOIL OF NORTHERN JAPAN ESTIMATED ... 
Description:

Concentrations of 222Rn, CO2, N2O and CH4 were measured in a cold-temperate northern Japanese grassland soil during 1996 to compare the fluxes of CO2, N2O and CH4 calculated by the 222Rn method and the static chamber method and to estimate the source strengths of CO2 and N2O in the soil using the 222Rn method. The 222Rn fluxes ranged from 890 to 3400 dpm/m2/h and the average was 1570±310 dpm/m2/h on sandy soil (50% sand). The results of CO2, N2O and CH4 flux-measurements by the 222Rn method were in agreement with those by the static chamber method within the observed range of error. The vertical profiles of soil source strengths of CO2 and N2O were also calculated from the concentration gradients of 222Rn, CO2 and N2O to investigate seasonal changes in the soil production rates of CO2 and N2O. The production rates of CO2 and N2O varied significantly by season, averaging 1650±450 mgC/m3/h and 19±3.2 µgN/m3/h, respectively. These seasonal changes in the source strengths of CO2 and N2O in the surface soil corresponded with changes in fluxes of CO2 and N2O from the soil.


Author's Names: Yongwon Kim and Noriyuki Tanaka
Filesize: 62.26 Kb
Added on: 01-Aug-2005 Downloads: 19
Home Page | Comment on Proceeding | Details

  ROOT AND MICROBIAL CONTRIBUTION TO THE TOTAL CO2 EFFLUX FROM SOIL AS DEPENDENT ON LAND USE 
Description:

The contribution of roots to the annual CO2 emission from gray forest and soddy podzolic soils measured in the field experiments under crops and native vegetation varied in the wide range from 10 to 58% of CO2 emission from the soil by mean value of 33%. The contribution of roots to the CO2 emission from soil surface calculated for growth season for all the ecosystems studied was equal to 44%. In agroecosystems the contribution of roots was strongly related to the length of crops growth. CO2 emission during dormant periods of the year was greatly controlled by the decomposition of surface litter and detritus in the soil than by respiration of roots and soil microorganisms.


Author's Names: A. Larionova, V. Lopes de Gerenju, D.Sapronov, I. Yevdokimov
Filesize: 35.02 Kb
Added on: 01-Aug-2005 Downloads: 19
Home Page | Comment on Proceeding | Details

  TOWARDS A BETTER QUANTIFICATION OF CROPLANDS EXTENT AND MANAGEMENT CONTRIBUTION TO CARBON CYCLING 
Description:

The development of agriculture responding to increasing demand for food raises the question of the role of cultivated land in relation to carbon sources and sinks, their spatial patterns and temporal variability.


Author's Names: P.C. Smith, N. Viovy, Y. Meurdesoif, S. Gervois, et al
Filesize: 71.66 Kb
Added on: 04-Aug-2005 Downloads: 19
Home Page | Comment on Proceeding | Details

  CARBON SEQUESTRATION IN AGRICULTURAL SOILS OF DIFFERENT NATURAL FERTILITY UNDER NITROGEN USAGE 
Description:

The influence of nitrogen fertilizing on carbon accumulation and decomposition in arable soils of different fertility – gray forest soil and chernozem was investigated in greenhouse experiment with corn. Growing of plants without N application on rich chernozem favored the considerable (about 1% of Сorg) C growth, and on poor gray forest soil contributed to C decrease. Soil organic matter (SOM) decomposition in both soils under unfertilized plants was the same. N usage on gray forest soil resulted in increase of C accumulation due to the substantial increase of C input with roots of fertilized plants and as organic matter active phase of this soil was stable against decomposition under N. N application on chernozem in reverse significantly increased SOM decomposition and affected plant productivity to a lesser degree. Thus, N fertilizing favors C sink in arable soils of low fertility and can reduce soil C accumulation in arable soils of high fertility.


Author's Names: A.S. Tulina, T.V. Kuznetsova, and V.M. Semenov
Filesize: 89.25 Kb
Added on: 08-Aug-2005 Downloads: 19
Home Page | Comment on Proceeding | Details



Select Page: 1 2 3 4 5 6 7 8 9 10   [ Next Page >> ]

     Login
Username

Password


     Talk History
Friday, September 30
· Discussion Panel
· Nitrogen Regulation of Carbon Sequestration in Terrestrial Ecosystems in Respons
· The Role of Water Relations in Driving Grassland Ecosystem Responses to Rising A
· Unraveling the Decline in High-latitude Surface Ocean Carbonate
Thursday, September 29
· Hazards of Temperature on Food Availability in Changing Environments (HOT-FACE)
· The Amazon and the Modern Carbon Cycle
· New Coupled Climate-carbon Simulations from the IPSL Model
· The Changing Carbon Cycle
· What are the Most Important Factors for Climate-carbon Cycle Coupling?
· CO2 Uptake of the Marine Biosphere
· European-wide Reduction in Primary Productivity Caused by the Heat and Drought i
· Persistence of Nitrogen Limitation over Terrestrial Carbon Uptake
· Atmospheric CO2, Carbon Isotopes, the Sun, and Climate Change over the Last Mill
· Proposing a Mechanistic Understanding of Atmospheric CO2 During the late Pleist
· Greenhouse Gas (CO2, CH4) and Climate Evolution since 650 kyrs Deduced from Anta
Wednesday, September 28
· (In and) Out of Africa: Estimating the Carbon Exchange of a Continent
· Recent Shifts in Soil Dynamics on Growing Season Length, Productivity, and...
· Interannual Variability in the Carbon Exchange Using an Ecosystem-fire Model
· Photosynthesis and Respiration in Forests in Response to Environmental Changes
· Seasonal and Interannual Variability in Net Ecosystem CO2 Exchange in Japan
· Estimating Landscape-level Carbon Fluxes from Tower CO2 Mixing Ratio Measurement
· Monitoring Effects in Climate and Fire Regime on Net Ecosystem Production
· Radiative Forcing from a Boreal Forest Fire
· The Influence of Soil and Water Management on Carbon Erosion and Burial
· Spatial and Temporal Patterns of CO2, CH4, and N2O Fluxes in Ecosystems
· Modeling the History of Terrestrial Carbon Sources and Sinks
· The Age of Carbon Respired from Terrestrial Ecosystems
· Discussion Panel
· The Underpinnings of Land Use History
Tuesday, September 27
· Regional CO2 Fluxes for North America Estimated from NOAA/CMDL Observatories

Older Articles

     Who's Online
There are currently, 1 guest(s) and 0 member(s) that are online.

You are Anonymous user. You should login here




The 7th International CO2 Conference

The Omni Interlocken Resort
September 25th - 30th
PHP-Nuke Copyright © 2005 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.
Page Generation: 0.09 Seconds