Identification of ecological networks and nodes in Fujian province based on green and blue corridors

Abstract

China's Green Space System Planning (GSSP) research has gradually expanded from central urban areas to municipal and provincial scales in recent years. Besides, the research on the role of green space in the water environment has also attracted much attention. However, the study of green corridors usually ignored hydrological data, which widespread absence especially in the large area scale. And the scale of green corridor construction mainly focused on central urban areas. This paper took China's Fujian province as an example. Based on the DEM elevation data, the article identified blue corridors without hydrological data. In addition, the green corridors were determined based on the land use data. According to the green corridors and blue corridors protection, we identified the ecological networks and nodes by the network analysis method. The results showed that the blue corridors identified by DEM data were consistent with the hydrological status quo. The regional status of the identified ecological networks and nodes were basically in line with their characteristics, proving the value of the planning methods. Finally, based on the identification results, suggestions for Fujian's ecological networks and nodes are put forward.

The Spatiotemporal Variation in Biodiversity and Its Response to Different Future Development Scenarios: A Case Study of Guilin as an Internationally Renowned Tourist Destination in China

“…It is integral to ecosystems and closely linked to human survival and well-being. Recently, the progress of urbanization has not only heightened human-land conflicts and altered LUC patterns but has also exerted a substantial impact on biodiversity [20,52]. Research has demonstrated that the combined use of HQ and LP can comprehensively assess biodiversity changes resulting from LUC alterations, offering novel perspectives and methodologies for biodiversity research.…”

“…The habitat quality index (HQI) is frequently utilized as a proxy indicator of biodiversity. It denotes the capacity of a habitat to furnish a stable living environment for organisms on a sustained basis and finds extensive application in biodiversity research [20,21]. It can reflect the biodiversity status of the region to some extent, and the assessment of changes in habitat quality (HQ) can provide a reference for regional LUC management and ecological conservation planning [22,23].…”

Research on the Construction of a Composite Humanistic Forest Ecological Corridor in the Main Urban Area of Daqing City

“…Forest ecological corridors represent a vital green framework of urban ecosystems, acting as linear or band-shaped landscape elements. They intricately weave the city's ecological fabric into a cohesive unit [1]. The development of these ecological networks enhances urban accessibility and continuity [2], facilitates species migration, and amplifies the region's ecological service capabilities [3].…”

Stability of Regional Ecological Supply–Demand Is Enhanced by Complex Network Modeling: Evidence From the Xuzhou Metropolitan Area, China

“…Ecological corridors are key ecological lands that ensure connectivity of ecological processes and the completeness of ecological functions. The extraction methods of ecological corridors can mainly be divided into three models: (1) the Minimum Cumulative Resistance model (MCR) [33]; (2) Circuit Theory model [34]; (3) Hydrological Analysis model [35]. Ecological nodes refer to ecological areas on ecological corridors that play a key role in ecological processes between patches [36], and their identification is closely related to the extraction of ecological corridors.…”