A study on the evolution of landscape pattern and driving factors from 1990 to 2020 in the source region of the Yellow River in China
The source region of the Yellow River is an important ecological barrier of the Qinghai-Tibet Plateau in China. In recent decades, the ecological environment in the source region of the Yellow River has been deteriorating continuously, which not only endangers the living environment of the region, b...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
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| Series: | Environmental Research Communications |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2515-7620/adc3ef |
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| Summary: | The source region of the Yellow River is an important ecological barrier of the Qinghai-Tibet Plateau in China. In recent decades, the ecological environment in the source region of the Yellow River has been deteriorating continuously, which not only endangers the living environment of the region, but also seriously hinders the sustainable development of regional ecology, society and economy. At present, the interaction mechanism among land use, landscape pattern and driving factors in the source region of the Yellow River has not been revealed. Based on the remote sensing image data of the source region in the past 30 years, the evolution law of landscape pattern was analyzed by land transfer matrix and landscape pattern index, and the driving factors were explored by principal component analysis. The results showed that: (1) the rate of land use change in the source region was slow in recent 30 years, and the change of grassland and unused land area was the largest. (2) Grassland is the most dominant landscape type in the source region and has the best natural connectivity. The fragmentation of forest landscape is serious. The landscape patch density, maximum patch index, dispersal and juxtaposition index and Shannon diversity index in the source area showed a decreasing trend, while the girth to area ratio showed an increasing trend, indicating that the landscape types were more complex in shape. The land use structure in the source region of the Yellow River is more reasonable, the landscape pattern changes tend to be stable, and the ecological environment is gradually improved. (3) Social and economic factors were the main causes of landscape pattern change in the source region. This study can provide scientific basis for rational utilization of land resources, ecological protection and restoration in the source region of the Yellow River. |
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| ISSN: | 2515-7620 |