Ecosystem services response to urbanization in metropolitan areas:   Thresholds identification

doi:10.1016/j.scitotenv.2017.06.218

CORC > 北京大学 > 城市与环境学院

	Ecosystem services response to urbanization in metropolitan areas: Thresholds identification
	Peng, Jian ; Tian, Lu ; Liu, Yanxu ; Zhao, Mingyue ; Hu, Yi&apos ; Wu, Jiansheng ; na
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2017
关键词	Ecosystem services Urbanization thresholds Piecewise linear regression Peri-urban area Beijing City TIANSHUI ECONOMIC REGION YANGTZE-RIVER DELTA LAND-USE RAPID URBANIZATION LANDSCAPE PATTERN USE EFFICIENCY HUMAN IMPACTS TRADE-OFF CHINA ENVIRONMENT
DOI	10.1016/j.scitotenv.2017.06.218
英文摘要	Ecosystem service is the key comprehensive indicator for measuring the ecological effects of urbanization. Although various studies have found a causal relationship between urbanization and ecosystem services degradation, the linear or non-linear characteristics are still unclear, especially identifying the impact thresholds in this relationship. This study quantified four ecosystemservices (i.e. soil conservation, carbon sequestration and oxygen production, water yield, and food production) and total ecosystem services (TES), and then identified multiple advantageous area of ecosystem services in the peri-urban area of Beijing City. Using piecewise linear regression, the response of TES to urbanization (i.e., population density, GDP density, and construction land proportion) and its thresholds were detected. The results showed that, the TES was high in the north and west and low in the southeast, and there were seven multiple advantageous areas (distributed in the new urban development zone and ecological conservation zone), one single advantageous area (distributed in the ecological conservation zone), and six disadvantageous areas (mainly distributed in the urban function extended zone). TES response to population and economic urbanization each had a threshold (229 person km(-2) and 107.15 million yuan km(-2), respectively), above which TES decreased rapidly with intensifying urbanization. However, there was a negative linear relationship between land urbanization and TES, which indicated that the impact of land urbanization on ecosystem services was more direct and effective than that of population and economic urbanization. It was also found that the negative impact of urbanization on TES was highest in the urban function extended zone, followed in descending order by that in the new urban development zone and ecological conservation zone. According to the detected relationships between urbanization and TES, the economic and population urbanization should be strengthened accompanied by slowing or even reducing land urbanization, so as to achieve urban ecological sustainability with less ecosystem services degradation. (C) 2017 Elsevier B.V. All rights reserved.; National Natural Science Foundation of China [41130534]; SCI(E); SSCI; ARTICLE; 706-714; 607
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/468914]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Peng, Jian,Tian, Lu,Liu, Yanxu,et al. Ecosystem services response to urbanization in metropolitan areas: Thresholds identification[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017.
APA	Peng, Jian.,Tian, Lu.,Liu, Yanxu.,Zhao, Mingyue.,Hu, Yi&apos.,...&na.(2017).Ecosystem services response to urbanization in metropolitan areas: Thresholds identification.SCIENCE OF THE TOTAL ENVIRONMENT.
MLA	Peng, Jian,et al."Ecosystem services response to urbanization in metropolitan areas: Thresholds identification".SCIENCE OF THE TOTAL ENVIRONMENT (2017).