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Title: Spatial and temporal patterns of biotic exchanges of CO{sub 2} between the atmosphere and tropical landscapes and their role in the global carbon balance. Progress report

Abstract

Since mid-September we have been engaged in final revision of the data base for South and Southeast Asia. In October we revised our second chapter for the forthcoming volume Effects of Land Use Change on Atmospheric Carbon Dioxide Concentrations, edited by Virginia Dale. ``Trends in Carbon Content of Vegetation in South and Southeast Asia Associated with Changes in Land Use``, in response to a second round of reviews. Both this chapter and `` Century of Land Use Change in South and Southeast Asia`` (submitted in revised form in July) are have been accepted and are now in the hands of the technical editor. our time series of land use data and carbon content estimates for live vegetation in 93 zones comprising thirteen Asian nations at four dates was finalized in the course of manuscript revision. We sent machine-readable copies of the spreadsheets containing tabular data for Southeast Asia to CDIAC in October, and the following month delivered the South Asian data. At the same time, we sent these files to the research groups of Sandra Brown and Charlie Hall, who have entered this information in their geographic information systems, and also to Skee Houghton.

Authors:
;
Publication Date:
Research Org.:
Duke Univ., Durham, NC (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10102488
Report Number(s):
DOE/ER/61082-T2
ON: DE94000711
DOE Contract Number:
FG05-90ER61082
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: [1993]
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; CARBON DIOXIDE; ENVIRONMENTAL IMPACTS; LAND USE; INFORMATION DISSEMINATION; ASIA; AIR-BIOSPHERE INTERACTIONS; BIOMASS; PROGRESS REPORT; 540120; CHEMICALS MONITORING AND TRANSPORT

Citation Formats

Richards, J.F., and Flint, E.P. Spatial and temporal patterns of biotic exchanges of CO{sub 2} between the atmosphere and tropical landscapes and their role in the global carbon balance. Progress report. United States: N. p., 1993. Web. doi:10.2172/10102488.
Richards, J.F., & Flint, E.P. Spatial and temporal patterns of biotic exchanges of CO{sub 2} between the atmosphere and tropical landscapes and their role in the global carbon balance. Progress report. United States. doi:10.2172/10102488.
Richards, J.F., and Flint, E.P. Fri . "Spatial and temporal patterns of biotic exchanges of CO{sub 2} between the atmosphere and tropical landscapes and their role in the global carbon balance. Progress report". United States. doi:10.2172/10102488. https://www.osti.gov/servlets/purl/10102488.
@article{osti_10102488,
title = {Spatial and temporal patterns of biotic exchanges of CO{sub 2} between the atmosphere and tropical landscapes and their role in the global carbon balance. Progress report},
author = {Richards, J.F. and Flint, E.P.},
abstractNote = {Since mid-September we have been engaged in final revision of the data base for South and Southeast Asia. In October we revised our second chapter for the forthcoming volume Effects of Land Use Change on Atmospheric Carbon Dioxide Concentrations, edited by Virginia Dale. ``Trends in Carbon Content of Vegetation in South and Southeast Asia Associated with Changes in Land Use``, in response to a second round of reviews. Both this chapter and `` Century of Land Use Change in South and Southeast Asia`` (submitted in revised form in July) are have been accepted and are now in the hands of the technical editor. our time series of land use data and carbon content estimates for live vegetation in 93 zones comprising thirteen Asian nations at four dates was finalized in the course of manuscript revision. We sent machine-readable copies of the spreadsheets containing tabular data for Southeast Asia to CDIAC in October, and the following month delivered the South Asian data. At the same time, we sent these files to the research groups of Sandra Brown and Charlie Hall, who have entered this information in their geographic information systems, and also to Skee Houghton.},
doi = {10.2172/10102488},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Oct 01 00:00:00 EDT 1993},
month = {Fri Oct 01 00:00:00 EDT 1993}
}

Technical Report:

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  • At SUNY ESF, our overall objective for this year was to finish refining the methods used to convert our previous models of global carbon flux and land use change into a GIS-compatible format. We now have the ability to obtain, convert, and incorporate geographic data into spatial simulation models that describe past carbon exchange patterns, as well as predict future landuse change and carbon exchange. Our initial tests of this model in Peninsula Malaysia have been very promising, in that we are able to successfully predict land use from 1972 to 1982 and even from 1870 to 1970. In thismore » context ``successful`` means that we classify in the model from 80 to 95 percent of the cells correctly, depending upon the number of land use types we try to predict. We are now preparing to apply this model to the entire continent of Africa and to Central America.« less
  • At SUNY ESF, our overall objective for this year was to finish refining the methods used to convert our previous models of global carbon flux and land use change into a GIS-compatible format. We now have the ability to obtain, convert, and incorporate geographic data into spatial simulation models that describe past carbon exchange patterns, as well as predict future landuse change and carbon exchange. Our initial tests of this model in Peninsula Malaysia have been very promising, in that we are able to successfully predict land use from 1972 to 1982 and even from 1870 to 1970. In thismore » context successful'' means that we classify in the model from 80 to 95 percent of the cells correctly, depending upon the number of land use types we try to predict. We are now preparing to apply this model to the entire continent of Africa and to Central America.« less
  • Land cover change is one of the most important components of global change. It might be argued that over the next 20 to 50 years the global effects on ecosystems and human habitability from land cover conversion will be much larger than any estimated to arise from climate change. Only a few datasets exist, and these suffer from a number of technical and interpretive problems. There are three areas of uncertainty which need much better documentation and analysis: (1) the state (ie information on biomass, net primary production, etc.) and distribution on existing land cover, (2) the rate and distributionmore » of land cover conversion, both historically and currently, and (3) the underlying driving forces which determine the rate and extent of land cover conversion. Some combination of historical reconstruction and remote sensing are needed to refine the first two areas. Future research can be developed around three general areas: (a) acquisition and analysis of new data on existing and pre-disturbance land cover, using a combination of satellite data, historical reconstructions, and maps, (b) acquisition and analysis of mapped data on the distribution of primary agents of land cover change, such as deforestation or agricultural expansion using satellite data for the contemporary period (since 1978), and tabular census data for historical periods, (c) development of models, both explanatory and numerical, which are abased on simple extrapolation for short term analyses and socio-economic factors for long term analyses.« less
  • `The Role of Tropical Deforestation in the Global Carbon cycle: Spatial and Temporal Dynamics`, was a joint project involving the University of New Hampshire, the Marine Biological Laboratory, and the Woods Hole Research Center. The contribution of the Woods Hole Research Center consisted of three tasks: (1) assist University of New Hampshire in determining the net flux of carbon between the Brazilian Amazon and the atmosphere by means of a terrestrial carbon model; (2) address the spatial distribution of biomass across the Amazon Basin; and (3) assist NASA Headquarters in development of a science plan for the Terrestrial Ecology componentmore » of the NASA-Brazilian field campaign (anticipated for 1997-2001). Progress on these three tasks is briefly described.« less