Influences of impervious surfaces on ecological risks and controlling strategies in rapidly urbanizing regions
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Influences of impervious surfaces on ecological risks and controlling strategies in rapidly urbanizing regions. / Hou, Ying; Ding, Wenhao; Liu, Changfeng; Li, Kai; Cui, Haotian; Liu, Baoyin; Chen, Weiping.
I: Science of the Total Environment, Bind 825, 153823, 2022.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Influences of impervious surfaces on ecological risks and controlling strategies in rapidly urbanizing regions
AU - Hou, Ying
AU - Ding, Wenhao
AU - Liu, Changfeng
AU - Li, Kai
AU - Cui, Haotian
AU - Liu, Baoyin
AU - Chen, Weiping
PY - 2022
Y1 - 2022
N2 - Reducing ecological risks is important for promoting regional sustainable development. However, studies on the influ-ence of impervious surfaces on ecological risks and risk control strategies in regions undergoing rapid urbanization are limited. Therefore, this study aimed to demonstrate the spatial-temporal dynamics of regional ecological risks using Beijing as a case study to reveal the influence of impervious surfaces and explore the controlling strategies of risks. We first characterized the ecological risks in Beijing based on the ecosystem service values and mapped the risk levels and temporal variations in risks. We then identified the ecological risk increases caused by impervious surface expansion and built linear regression models for impervious surface coverage (ISC) and risk index. Finally, we formulated ecological risk control strategies for the strategy categories identified based on the ISC thresholds. The results show that the mountainous areas mainly exhibited low ecological risk levels, and the plain areas mainly showed high levels. The expansion of impervious surface was the main cause of the relatively large temporal increase in ecological risks from 2005 to 2015. Moreover, the strategies for ecological risk control can be divided into four categories based on the division of ISC, with 30%, 70%, and 90% as the thresholds. For risk control strategies, reducing ISC is the most important measure to reduce ecological risks for the category with an ISC range of 90%-100%, and increasing the area proportions of forests and water bodies is the most effective measure for the category with an ISC range of 0%-30%. For the other two categories, controlling the ISC and other strategies are required. Our study can increase the understanding of the influences of impervious surfaces on ecological risks in rapidly urbanizing regions and help inform the formulation of strategies for controlling the ecological risks in Beijing.
AB - Reducing ecological risks is important for promoting regional sustainable development. However, studies on the influ-ence of impervious surfaces on ecological risks and risk control strategies in regions undergoing rapid urbanization are limited. Therefore, this study aimed to demonstrate the spatial-temporal dynamics of regional ecological risks using Beijing as a case study to reveal the influence of impervious surfaces and explore the controlling strategies of risks. We first characterized the ecological risks in Beijing based on the ecosystem service values and mapped the risk levels and temporal variations in risks. We then identified the ecological risk increases caused by impervious surface expansion and built linear regression models for impervious surface coverage (ISC) and risk index. Finally, we formulated ecological risk control strategies for the strategy categories identified based on the ISC thresholds. The results show that the mountainous areas mainly exhibited low ecological risk levels, and the plain areas mainly showed high levels. The expansion of impervious surface was the main cause of the relatively large temporal increase in ecological risks from 2005 to 2015. Moreover, the strategies for ecological risk control can be divided into four categories based on the division of ISC, with 30%, 70%, and 90% as the thresholds. For risk control strategies, reducing ISC is the most important measure to reduce ecological risks for the category with an ISC range of 90%-100%, and increasing the area proportions of forests and water bodies is the most effective measure for the category with an ISC range of 0%-30%. For the other two categories, controlling the ISC and other strategies are required. Our study can increase the understanding of the influences of impervious surfaces on ecological risks in rapidly urbanizing regions and help inform the formulation of strategies for controlling the ecological risks in Beijing.
KW - Ecosystem services
KW - Equivalent factor
KW - Spatial-temporal dynamics
KW - Thresholds
KW - Categorization
KW - ISC
KW - impervious surface coverage
KW - LAND-SURFACE
KW - ECOSYSTEM SERVICES
KW - LANDSCAPE COMPOSITION
KW - RIVER-BASIN
KW - TEMPERATURE
KW - IMPACTS
KW - RUNOFF
KW - CHINA
KW - URBANIZATION
KW - COMMUNITIES
U2 - 10.1016/j.scitotenv.2022.153823
DO - 10.1016/j.scitotenv.2022.153823
M3 - Journal article
C2 - 35157861
VL - 825
JO - Science of the Total Environment
JF - Science of the Total Environment
SN - 0048-9697
M1 - 153823
ER -
ID: 312636444