三江平原土地利用/覆被变化对区域植被碳储量的影响

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Abstract

Terrestrial ecosystems are important carbon pools. Land use and cover changes affect the terrestrial carbon storage significantly. In this paper, six stages of spatial database from 1954 to 2005 were established with digitization of topographical maps and interpretation of remote sensing imageries. Using the method provided by the 2006 IPCC Guidelines for National Greenhouse Gas Inventories, impacts of land-use change on carbon storage of vegetation were assessed. The results indicate that land use and cover changes in the study area were dramatic during 1954-2005. The area of farmland increased, while the area of marsh, forest and grassland decreased sharply. The land use/cover changes mainly occurred among farmlands, marshes, forest lands and grasslands. Marsh, forest and grassland were mainly converted to farmland. The land types converted to forest included farmland and grassland, and the main land types converted to marsh were farmland and forest. From 1954 to 2005, a total of 1.07×10³km² forest, 5.73×10³km² grassland and 2.59×10⁴km² marsh have transferred to farmland. Land use and cover changes led to steady decline of carbon storage in vegetation and the total loss of vegetation carbon storage from 1954 to 2005 is 57.48Tg The transformation of forest, marsh and grassland into farmland or the transformation of forest into grassland and marsh led to reduction of 97.06Tg carbon storage in vegetation. The transform of farmland to forest, marsh and grassland and the transform of grassland and marsh to forest led to the increase of 39.58Tg carbon storage in vegetation.

Key words： vegetation carbon storage remote sensing and GIS land use change

Received: 25 June 2010

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	Articles by authors
	CHANG Shou-zhi
	WANG Zong-ming
	SONG Kai-shan
	LIU Dian-wei
	ZHANG Bai
	ZHANG Chun-hua

Cite this article:

CHANG Shou-zhi,WANG Zong-ming,SONG Kai-shan, et al. Impact of land use and land cover change on the vegetation carbon storage in Sanjiang Plain[J]. , 2010, 29(3): 207-214.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2010/V29/I3/207

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