HR: 0800h
AN: B41C-0215    [Abstracts]
TI: Effects of Disturbance and Reforestation Programs on China­_s Forest Carbon Budget in 1901-2001
AU: * Chen, J M
EM: chenj@geog.utoronto.ca
AF: University of Toronto, 100 St. George St, Toronto, Ont M5S 3G3 Canada
AU: Wang, S
EM: sqwang@igsnrr.ac.cn
AF: Institute of Geographical Sciences and Natural Resource Research, Datun Road, Beijing, 100101 China
AU: Feng, X
EM: fenxf@lreis.ac.cn
AF: Institute of Geographical Sciences and Natural Resource Research, Datun Road, Beijing, 100101 China
AU: Ju, W
EM: juw@geog.utoronto.ca
AF: University of Toronto, 100 St. George St, Toronto, Ont M5S 3G3 Canada
AU: Liu, G
EM: liugh@lreis.ac.cn
AF: Institute of Geographical Sciences and Natural Resource Research, Datun Road, Beijing, 100101 China
AU: Liu, J
EM: liujy@igsnrr.ac.cn
AF: Institute of Geographical Sciences and Natural Resource Research, Datun Road, Beijing, 100101 China
AU: Zhu, Q
EM: qijiangzhu@263.net
AF: Beijing Normal University, 19 Xinjiekoumenwai Road, Beijing, 100875 China
AU: Tian, Q
EM: tianqj@jlonline.com
AF: Nanjing University, 22 Hankou Road, Nanjing, 210093 China
AU: Shi, X
EM: xzshi@ns.issas.ac.cn
AF: Nanjing Inititute of Soil Science, 71 East Beijing Road, Nanjing, 210008 China
AU: Pan, J
EM: pan_jian_jun@yahoo.com.cn
AF: Nanjing Agricultural University, 1 Weigang, Nanjing, 210095 China
AU: Xue, J
EM: xue-jianhui@hotmail.com
AF: Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037 China
AU: Kang, E
EM: eskang@ns.lzb.ac.cn
AF: Cold and Arid Regions Environmental and Engineering Research Institute, 260 Donggang West Road, Lanzhou, 730000 China
AB: Human land use activities have influenced regional and global carbon cycles directly and indirectly. As part of an international project funded by the Canadian International Development Agency and Chinese Academy of Sciences, we conducted research on China's forest carbon budget as affected by China's land use changes. Annual spatial distributions of carbon sources and sinks in China's forests at 1 km resolution are computed for 1901-2001, using satellite remote sensing as well as other spatial datasets including climate, soil, forest age, and nitrogen deposition data. Both disturbance and non-disturbance (climate, nitrogen deposition, CO₂ fertilization) effects are considered using a spatially-explicit Integrated Terrestrial Ecosystem Carbon Cycle Model (InTEC). Model results show large temporal and spatial source and sink variations resulting from both land use changes and climate variations. In the last two decades, China's forests overall changed from a carbon source to sink as a result of large-scale reforestation programs since early 1980's. Forest and soil measurements made at five ground sites in Guizhou, Gansu, Jilin, Jiangxi and Jiangsu provinces were used to calibrate the InTEC model, and high-resolution satellite images were used for scaling purposes.
UR: http://www.utoronto.ca/cccs2002/key_members_chen.html
DE: 0315 Biosphere/atmosphere interactions (0426, 1610)
DE: 0439 Ecosystems, structure and dynamics (4815)
DE: 0466 Modeling
DE: 0469 Nitrogen cycling
DE: 0480 Remote sensing
SC: Biogeosciences [B]
MN: Fall Meeting 2005