Understanding Urban Expansion on the Tibetan Plateau over the Past Half Century Based on Remote Sensing: The Case of Xining City, China
文献类型：期刊论文
| 作者 | Pan, Xinhao3,4; Wang, Yihang3,4; Liu, Zhifeng3,4; He, Chunyang3,4; Liu, Haimeng5; Chen, Zhirong1,2 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2021 |
| 卷号 | 13期号:1页码:23 |
| 关键词 | Tibetan Plateau urban landscape sustainability urbanization multi-scale long time series Keyhole Corona spy satellite dryland |
| DOI | 10.3390/rs13010046 |
| 通讯作者 | Liu, Zhifeng(zhifeng.liu@bnu.edu.cn) |
| 英文摘要 | The Tibetan Plateau (TP) is an important area that affects global sustainable development. Quantifying spatiotemporal patterns of urbanization is crucial for maintaining the sustainability on the TP. This study took Xining City, the largest city on the TP, as an example to understand the urban expansion in this region in the past 50 years. We combined the high-resolution spy satellite data and China's long-term urban land dataset (CULD) to quantify the urban expansion of Xining City. The object-oriented random forest classification was performed to extract urban land from spy satellite data in 1969, and the inter-annual correction was used to combine urban land information from 1969 to 2017. We found that the proposed approach can accurately quantify the urban expansion of Xining City over the past half century with an overall accuracy of 91% and a kappa coefficient of 0.86. Such high accuracy benefits from the fine resolution of spy satellite data and the consistency of CULD. We also found that Xining City experienced accelerated and fragmented urban sprawl to higher altitude areas, as a result of socioeconomic development and topographical limitations. The acceleration of urban expansion was more obvious, and the urban landscape fragmentation was more serious at high altitude areas. Such urban expansion encroached on cropland and grassland, and caused increased risks of landslides and other geological disasters. Therefore, Xining City urgently needs to promote the development of compact cities to control urban sprawl at higher altitude areas and provide a reference for improving urban sustainability across the TP. In this study, we analyzed the urban expansion of Xining city from 1969 to 2017, and provided a reliable way to understand the long-term spatiotemporal urbanization based on remote sensing, which has the potential for wide applications. In addition, the extracted urban information can help to improve the urban sustainability of Xining City and the entire TP. |
| WOS关键词 | LAND-USE ; DYNAMICS ; QUALITY ; IMAGERY |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0405] ; National Natural Science Foundation of China[41871185] ; National Natural Science Foundation of China[41971270] ; State Key Laboratory of Earth Surface Processes and Resource Ecology, China |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing |
| 语种 | 英语 |
| WOS记录号 | WOS:000606226700001 |
| 出版者 | MDPI |
| 资助机构 | Second Tibetan Plateau Scientific Expedition and Research Program ; National Natural Science Foundation of China ; State Key Laboratory of Earth Surface Processes and Resource Ecology, China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/136603]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Zhifeng |
| 作者单位 | 1.Qinghai Normal Univ, Key Lab Qinghai Prov Phys Geog & Environm Proc, Xining 810008, Peoples R China 2.Qinghai Normal Univ, MOE Key Lab Tibetan Plateau Land Surface Proc & E, Xining 810008, Peoples R China 3.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource ESPRE, Ctr Human Environm Syst Sustainabil CHESS, Beijing 100875, Peoples R China 4.Beijing Normal Univ, Sch Nat Resources, Fac Geog Sci, Beijing 100875, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, Xinhao,Wang, Yihang,Liu, Zhifeng,et al. Understanding Urban Expansion on the Tibetan Plateau over the Past Half Century Based on Remote Sensing: The Case of Xining City, China[J]. REMOTE SENSING,2021,13(1):23. |
| APA | Pan, Xinhao,Wang, Yihang,Liu, Zhifeng,He, Chunyang,Liu, Haimeng,&Chen, Zhirong.(2021).Understanding Urban Expansion on the Tibetan Plateau over the Past Half Century Based on Remote Sensing: The Case of Xining City, China.REMOTE SENSING,13(1),23. |
| MLA | Pan, Xinhao,et al."Understanding Urban Expansion on the Tibetan Plateau over the Past Half Century Based on Remote Sensing: The Case of Xining City, China".REMOTE SENSING 13.1(2021):23. |
入库方式： OAI收割
来源：地理科学与资源研究所
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