The influence of rapid urbanization and land use changes on terrestrial   carbon sources/sinks in Guangzhou, China

doi:10.1016/j.ecolind.2016.05.052

CORC > 北京大学 > 城市与环境学院

	The influence of rapid urbanization and land use changes on terrestrial carbon sources/sinks in Guangzhou, China
	Xua, Qian ; Yang, Ren ; Dong, Yu-Xiang ; Liu, Yan-Xu ; Qiu, Lin-Run
刊名	ECOLOGICAL INDICATORS
	2016
关键词	Land use Carbon sink Carbon emissions Urbanization Guangzhou SOIL ORGANIC-CARBON CO2 EMISSIONS ECONOMIC-GROWTH UNITED-STATES MANAGEMENT IMPACTS STOCKS STORAGE AREAS SEQUESTRATION
DOI	10.1016/j.ecolind.2016.05.052
英文摘要	Complex changes in carbon sources and sinks caused by rapid urbanization have been observed with extensive changes in the quantity, structure, and spatial pattern of land use types. Based on the modified Carnegie-Ames-Stanford Approach model and on gray relational analysis, we analyzed the influence of land use changes on carbon sinks and emissions in Guangzhou from 2000 to 2012. The aim was to identify suitable options for built-up land expansion that would allow for minimal carbon losses. The key results were as follows: (1) Built-up land increased by 118.91% in Guangzhou city over the study period, with this expansion taking the form of concentric circles extending around the old Yuexiu district. (2) Carbon emissions over the period of analysis significantly exceeded carbon sink capabilities. The total carbon sink decreased by 30.02%, from 535.40 x 10(3) t to 374.6 x 10(3) t. Total carbon emissions increased by 1.89 times, from 13.73 x 10(6) t to 39.67 x 10(6) t; 80% of carbon emissions were derived from energy consumption. (3) There were large differences in the extent of carbon sink losses at different scales of built-up land expansion and land use change. In Guangzhou, the loss of carbon sink is small when cultivated land (though not prime farmland) and water bodies are converted to built-up land on a small scale. The loss of carbon sink is much smaller when grasslands are converted to built-up land on a large scale. However, forested land, which has excellent carbon sink functions, should not be converted. (4) Changes in carbon sinks were mainly affected by natural factors and land urbanization. Changes in carbon emissions were mainly affected by population urbanization, economic urbanization, and land urbanization. (5) To achieve "economical and intensive use of land", "urban growth boundary" and "ecological red lines" should be determined for government policies on land use management. These factors have great significance for "increasing carbon sinks and reducing carbon emissions" in urban ecological systems. (C) 2016 Elsevier Ltd. All rights reserved.; National nature Science Foundation of China [41401190]; Fundamental Research Funds for the Central Universities, China [15lgpy34]; SCI(E); EI; ARTICLE; xuqian19840613@163.com; yangren0514@163.com; cesdyx@mail.sysu.edu.cn; liuyanxu@pku.edu.cn; qiulr@mail2.sysu.edu.cn; ,SI; 304-316; 70
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/449978]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Xua, Qian,Yang, Ren,Dong, Yu-Xiang,et al. The influence of rapid urbanization and land use changes on terrestrial carbon sources/sinks in Guangzhou, China[J]. ECOLOGICAL INDICATORS,2016.
APA	Xua, Qian,Yang, Ren,Dong, Yu-Xiang,Liu, Yan-Xu,&Qiu, Lin-Run.(2016).The influence of rapid urbanization and land use changes on terrestrial carbon sources/sinks in Guangzhou, China.ECOLOGICAL INDICATORS.
MLA	Xua, Qian,et al."The influence of rapid urbanization and land use changes on terrestrial carbon sources/sinks in Guangzhou, China".ECOLOGICAL INDICATORS (2016).