Dynamic changes in the landscape connectivity in Shenzhen City determined based on the long time series of remote sensing data

TANG Wenkui; YU Lu; ZHOU Weiqi; YUE Jun; ZHOU Zheng

doi:10.6046/zrzyyg.2021229

2022 Vol. 34, No. 3

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Article navigation > Remote Sensing for Natural Resources > 2022 > 34(3): 97-105

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TANG Wenkui, YU Lu, ZHOU Weiqi, YUE Jun, ZHOU Zheng. 2022. Dynamic changes in the landscape connectivity in Shenzhen City determined based on the long time series of remote sensing data. Remote Sensing for Natural Resources, 34(3): 97-105. doi: 10.6046/zrzyyg.2021229

Citation:

TANG Wenkui, YU Lu, ZHOU Weiqi, YUE Jun, ZHOU Zheng. 2022. Dynamic changes in the landscape connectivity in Shenzhen City determined based on the long time series of remote sensing data. Remote Sensing for Natural Resources, 34(3): 97-105. doi: 10.6046/zrzyyg.2021229

Dynamic changes in the landscape connectivity in Shenzhen City determined based on the long time series of remote sensing data

1. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China；
2. Urban Planning and Design Institute of Shenzhen, Shenzhen 518028, China

Received Date: 28 July 2021

Revised Date: 15 September 2022

Publish Date: 21 September 2022

Abstract

Abstract

In the past 30 years, the land use in Shenzhen City has changed dramatically until it is almost saturated now. Using the morphological spatial pattern analysis (MSPA) and the graph theory, this study quantitatively analyzed the landscape connectivity of ecological land in Shenzhen based on ten phases of remote sensing images for land cover or use from 1988 to 2015. The results show that the cultivated land was the main land source in various periods of Shenzhen’s rapid urbanization, while the proportion of forest land used for urban development had risen since 2005. For Shenzhen’s landscape connectivity from 1988 to 2015, the equivalent connected area (ECA) of the ecological land decreased by 1 175.4 km2, and the degree of network connectivity (DOC) decreased by 43.51%. Since the delineation of Shenzhen’s basic ecological control boundary in 2005, the pace of urban habitat degradation has slowed down but the ECA of the ecological land had still been gradually eroded at a rate of 11.9 km2 per year. The analysis of the importance of ecological patches shows that areas like the Yangtai Mountain and Tanglang Mountain are key ecological nodes for landscape connectivity and should be protected with greater efforts.
- landscape connectivity /
- graph theory /
- morphological spatial pattern analysis (MSPA) /
- remote sensing image of land cover or use /
- Shenzhen City

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References

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