Arid
DOI10.1029/2002GB001970
Sources and sinks of carbon from land-use change in China
Houghton, RA; Hackler, JL
通讯作者Houghton, RA
来源期刊GLOBAL BIOGEOCHEMICAL CYCLES
ISSN0886-6236
出版年2003
卷号17期号:2
英文摘要

[1] Changes in land use contribute to the current terrestrial carbon sink in most regions of the northern midlatitudes but are poorly documented for China, the world’s third largest country. We attempted to reconstruct the last 300 years of land-use change in China, emphasizing changes in the area of forests. Changes in the area of croplands were inadequate for reconstruction of forest loss because the long-term loss of forest area was more than twice the current area of croplands. We used historical information to reconstruct changes in forest area over time and the ecological literature to estimate the carbon stocks of the major natural ecosystems (vegetation and soil). We used a bookkeeping model to calculate the flux of carbon to or from living vegetation, dead vegetation, soils, and wood products under different types of land use. According to the data and assumptions, 180 ( range: 80-200) x 10(6) ha of forest were lost, and 17-33 PgC were released to the atmosphere between 1700 and 2000. About 25% of the loss was from soils. The accelerated clearing and logging of forests in northeastern and southwestern China led to emissions of carbon that reached peaks of 0.2-0.5 PgC yr(-1) from the late 1950s through the 1970s. Lower rates of deforestation since then, as well as expanding areas of tree plantations, reversed the net flux of carbon from a source to a sink during the 1990s.


英文关键词carbon balance China forests land-use change sources and sinks of carbon terrestrial ecosystems
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000182348800001
WOS关键词CLIMATE-CHANGE ; TERRESTRIAL ECOSYSTEMS ; SUBTROPICAL CHINA ; FOREST BIOMASS ; SOIL CHEMISTRY ; EASTERN CHINA ; NORTH CHINA ; DESERTIFICATION ; STORAGE ; AGRICULTURE
WOS类目Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/144734
作者单位(1)Woods Hole Res Ctr, Woods Hole, MA 02543 USA
推荐引用方式
GB/T 7714
Houghton, RA,Hackler, JL. Sources and sinks of carbon from land-use change in China[J],2003,17(2).
APA Houghton, RA,&Hackler, JL.(2003).Sources and sinks of carbon from land-use change in China.GLOBAL BIOGEOCHEMICAL CYCLES,17(2).
MLA Houghton, RA,et al."Sources and sinks of carbon from land-use change in China".GLOBAL BIOGEOCHEMICAL CYCLES 17.2(2003).
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