Establishing an ecological security pattern for urban agglomeration, taking ecosystem services and human interference factors into consideration

PeerJ

article

Dongchuan Wang¹  Junhe Chen¹  Lihui Zhang¹  Zhichao Sun¹  Xiao Wang¹  Xian Zhang¹  Wei Zhang¹ 

[1] School of Geology and Geomatics, Tianjin Chengjian University;Tianjin Key Laboratory of Civil Structure Protection and Reinforcement

关键词: Beijing–Tianjin–Hebei urban agglomeration;    Ecosystem service;    Ecological security pattern;    Ecological source;    Ecological corridor;   

DOI  :  10.7717/peerj.7306

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

The assessment of ecological security patterns is a topic of conversation in landscape ecology in recent years. However, ecosystem services and human activities are seldom considered comprehensively in the assessment of ecological security patterns. The present study employs the Beijing–Tianjin–Hebei urban agglomeration as a study area, and uses ecological services to determine the ecological sources. The importance of ecological sources is classified based on logical coding and functional types of ecological services. The research combines regional characteristics to select and quantitatively calculate three human disturbance factors: soil erosion sensitivity, geological hazard sensitivity, and night lighting. Then the basic surface resistance of land use to limit migration is modified and ecological corridors are identified by combining these three disturbance factors. The results indicate that the sources of water production, soil and water conservation, and carbon fixation are mainly provided in mountainous areas, recreation sources are mostly distributed in the plains, and these ecological sources improve the maintenance of ecological corridors. The modification of resistance surfaces significantly changes the length of ecological corridors in Tianjin, Tangshan, Cangzhou, and Beijing, and the modified resistance surface improves the recognition of ecological corridors. This study provides a new research framework for identifying the ecological security patterns of urban agglomerations and provides scientific guidance related to ecological protection and urban planning for the Beijing−Tianjin−Hebei urban agglomeration.

【 授权许可】

CC BY