Selecting ecologically appropriate scales to assess landscape ecological risk in megacity Beijing, China
文献类型：期刊论文
| 作者 | Li, Bingjie2; Yang, Yuanyuan3; Jiao, Limin2; Yang, Mingying1; Li, Ting4 |
| 刊名 | ECOLOGICAL INDICATORS
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 154页码:16 |
| 关键词 | Ecologically appropriate scales Landscape ecological risk Landscape pattern Megacity Beijing Spatio-temporal dynamics |
| ISSN号 | 1470-160X |
| DOI | 10.1016/j.ecolind.2023.110780 |
| 通讯作者 | Yang, Yuanyuan(yangyuanyuan@ruc.edu.cn) |
| 英文摘要 | Assessing the landscape ecological risk (LER) will facilitate optimal planning of land-use patterns and mitigating regional ecological risks, especially in megacities under rapid urbanization. And selecting the appropriate spatial analysis scales is the prerequisite for accurate assessment of the LER. In this study, we demonstrate the spatiotemporal dynamics of LER by determining the appropriate spatial scales in Beijing, China from 2000 to 2020. The results indicate that a granularity of 50 m and a magnitude of 5 km are optimal for regional LER assessment. The study area had predominantly medium risks, with medium, high and higher risks accounting for approximately 70% that revealed LER was at high level. Fortunately, the high and higher risks decreased by 14.64% while low and lower risks increased by 16.62% over the past two decades, which indicated LER was on a general downward trend. The LER pattern varies from east to west, with high and higher risks clustered in the northeast and southeast of the city center, and gradually dispersing elsewhere. In contrast, low and lower risks were predominantly in the city center and western regions, expanding outward from the city center. The LER was low in built-up land and cropland in the central city, but relatively high in areas away from it. The urban fringe areas dominated by woodland and grassland exhibited a high LER. The regional LER differentiation is spatially correlated with urban expressways and significant changes in LER were predominantly observed in areas adjacent to urban expressways. Specifically, the expansion of low and lower risks occurred outward along the ring roads of Beijing, and a typical case was that the lower risks were primarily enclosed by the fifth ring road in 2000 and gradually expanded towards the areas near the sixth ring road by 2020. Moreover, the LER manifests obvious spatial agglomeration influenced by human disturbance, with apparent high-high and low-low agglomerations. It is suggested to implement landscape optimization by enhancing the landscape diversity and connectivity to effectively mitigate ecological risks. These findings will provide scientific reference for researches aimed at mitigating ecological risks and fostering high-quality sustainable development in metropolitan areas. |
| WOS关键词 | LAND-COVER CHANGE ; CHANGING SCALE ; PATTERN ; SUSTAINABILITY ; EXPANSION ; URBANIZATION ; CONSTRUCTION ; SIMULATION ; IMPACT ; CITIES |
| 资助项目 | National Natural Science Foundation of China[41731286] ; National Natural Science Foundation of China[320MS041] ; Hainan Pro- vincial Natural Science Foundation of China ; [42071231] |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001059183400001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Hainan Pro- vincial Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/196650]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yang, Yuanyuan |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China 3.Renmin Univ China, Sch Publ Adm & Policy, Beijing 100872, Peoples R China 4.Hainan Normal Univ, Coll Geog & Environm Sci, Haikou 571158, Hainan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Bingjie,Yang, Yuanyuan,Jiao, Limin,et al. Selecting ecologically appropriate scales to assess landscape ecological risk in megacity Beijing, China[J]. ECOLOGICAL INDICATORS,2023,154:16. |
| APA | Li, Bingjie,Yang, Yuanyuan,Jiao, Limin,Yang, Mingying,&Li, Ting.(2023).Selecting ecologically appropriate scales to assess landscape ecological risk in megacity Beijing, China.ECOLOGICAL INDICATORS,154,16. |
| MLA | Li, Bingjie,et al."Selecting ecologically appropriate scales to assess landscape ecological risk in megacity Beijing, China".ECOLOGICAL INDICATORS 154(2023):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
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