| Title | Approaches for reducing uncertainties in regional forest carbon balance |
| |
| Author | Chen, W ; Chen, J;
Liu, J; Cihlar, J |
| Source | Global Biogeochemical Cycles vol. 14, no. 3, 2000 p. 827-838, https://doi.org/10.1029/1999GB001206  Open Access |
| Image |  |
| Year | 2000 |
| Alt Series | Natural Resources Canada, Contribution Series 20181878 |
| Publisher | Wiley-Blackwell |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Canada; British Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut;
Canada |
| NTS | 1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65;
66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560 |
| Lat/Long WENS | -141.0000 -50.0000 90.0000 41.7500 |
| Subjects | Nature and Environment; Agriculture; Science and Technology; carbon geochemistry; atmospheric geochemistry; carbon dioxide; vegetation; climate effects; models; nitrogen; ecosystems; Forests; Forestry;
Greenhouse gases; Climate change; adaptation; mitigation; Mitigation; Industry |
| Illustrations | flow diagrams; tables; plots; time series |
| Program | Climate Change
Geoscience |
| Program | Canada Centre for Remote Sensing |
| Program | Program of Energy Research and Development (PERD) |
| Released | 2000 09 01 |
| Abstract | Accurate estimation of regional terrestrial ecosystem carbon (C) balance is critical in formulating national and global adaptation and mitigation strategies in response to global changes. Since the
regional C balance cannot be measured directly, it has been estimated using various models. In such studies, errors often exceeded the magnitude of the estimated C balance due to two types of uncertainties: noninclusion of some important factors in
the C cycle and the fact that the C balance is a small difference between several large fluxes that can each be determined with only a limited accuracy. In this study, we propose new approaches to reduce these uncertainties and implement them in an
Integrated Terrestrial Ecosystem C-budget model (InTEC). To minimize the first type of uncertainties, InTEC considers all the major factors presently known to affect C balance (including climate, atmospheric CO2 concentration, N deposition, and
disturbances). To reduce the second type of uncertainties, InTEC estimates the C balance from historical changes in these factors, relative to the preindustrial period. InTEC is built on the basis of widely tested Century C cycling model, Farquhar's
leaf photosynthesis model, and age-NPP relationships, and is constrained by N cycling. As a general regional-scale terrestrial ecosystem C budget model, InTEC has so far been applied to Canada's forests [Chen et al., this issue]. The sensitivity
analysis showed that these two new approaches reduce the uncertainty in the C balance of Canada's forests substantially. |
| GEOSCAN ID | 312233 |
|
|