干旱区生态环境知识资源中心(Arid): 土地利用／覆被变化对土地生态系统有机碳库的影响以吉林省通榆县为例

Arid

	土地利用／覆被变化对土地生态系统有机碳库的影响以吉林省通榆县为例
其他题名	Impact of land use / cover changes on the organic carbon storage of land ecosystem： A case study in Tongyu county, Jilin province
	汤洁; 毛子龙; 韩维峥; 徐小明; 王晨野
ISSN	1672-2175
出版年	2008
卷号	17 期号:5 页码:2008-2013
中文摘要	土地利用／覆被变化对陆地碳循环影响显著。文章基于实地采集的土壤、植物样品的测试数据和1989、2004两年8月陆地卫星TM遥感影像数据，采用生态系统类型法分析吉林省通榆县1989--2004年耕地、林地、草地、盐碱地、沙地等11种地类之间土地利用变化对土地生态系统有机碳库的影响。计算结果表明1989--2004年通榆县土地生态系统有机碳库共损失了3．18TgC（1Tg=10~6t），年均损失约为0．265TgC。其中，湿地、草地有机碳库分别损失5．54TgC和3．71TgC，盐碱地面积的增加导致有机碳库损失4．75TgC。林地面积增加和沙地面积减少分别使有机碳库增加了4．58TgC和3．75TgC。研究区总体上为一个碳失汇，草地退化、湿地萎缩、土地沙化和盐碱化造成了有机碳库的碳损失，而植树造林、草地植被的恢复和重建等活动则可以显著增加土壤有机碳储量。该研究对于评估自然环境与人为活动影响下，特别是大规模土地整治与生态修复对土壤有机碳的增汇潜力和固碳效应的影响具有重要的理论意义和应用价值。
英文摘要	Land use / cover changes （LUCC） can evidently impact the terrestrial carbon cycle. Based on the data of soil and vegetation samples collected in fields, and Landsat TM remote sensing images in the August of 1989 and 2004, this paper examined the impact of LUCC on the organic carbon storage of land ecosystem from 1989 to 2004 in Tongyu County, Jilin Province with the method of ecosystem types, and the eleven land use types included farmlands, woodlands, grasslands, saline lands, sandy lands etc. The results showed that from 1989 to 2004, the organic carbon storage of land ecosystem in Tongyu County lost 3.18 Tg C （1 Tg= 10~6 t） in total, with an approximate loss of 0.265 Tg C per year. The organic carbon storage loss of wetlands and grasslands are respectively 5.54 Tg C and 3.71 Tg C, and the increase of saline land caused a loss of 4.75 TgC. Meanwhile, the organic carbon storage of woodlands increased by 4.58 Tg C, and the reduction of sandy land caused an increase of organic carbon storage by 3.75 Tg C. Generally, the research region is a missing carbon sink, in which grasslands degradation, wetlands shrinking, land desertification and salinization can cause carbon decreasing, and afforestation, restoration and reconstruction of grasslands vegetation can significantly increase the storage of organic carbon in soil. It is theoretically and practically significant to the evaluation of effects of large-scale land regulation and ecological rehabilitation in soil organic carbon sinks increases and carbon sequestration against the background of the natural environment and human activities.
中文关键词	土地利用／覆被变化 ; 有机碳库 ; 土地盐碱化 ; 土地沙化
英文关键词	land use / cover changes organic carbon storage land salinization land desertification
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ECONOMICS POLICY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3470138
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/222656
作者单位	吉林大学环境与资源学院, 长春, 吉林 130026, 中国
推荐引用方式 GB/T 7714	汤洁,毛子龙,韩维峥,等. 土地利用／覆被变化对土地生态系统有机碳库的影响以吉林省通榆县为例[J],2008,17(5):2008-2013.
APA	汤洁,毛子龙,韩维峥,徐小明,&王晨野.(2008).土地利用／覆被变化对土地生态系统有机碳库的影响以吉林省通榆县为例.,17(5),2008-2013.
MLA	汤洁,et al."土地利用／覆被变化对土地生态系统有机碳库的影响以吉林省通榆县为例".17.5(2008):2008-2013.