Effect of Compactness of Urban Growth on Regional Landscape Ecological Security

Abstract

With rapid urbanization destroying the ecological environment, scholars have focused on ways to coordinate harmonious development using urban spatial layouts and landscape ecological security. To explore landscape ecological security (the landscape elements, spatial positions and connections that are of key significance to the health and safety of ecological processes) from the perspective of urban form evolution pattern will help to open a new perspective of urban management research, and become the basic work of urban space policy and the implementation of the beautiful China strategy. Based on urban growth and land use data from 356 cities in China, this study applied a geographically weighted regression (GWR) model to quantify the impact of China’s urban growth pattern on landscape ecological security at the spatial level. The research results show that: (1) To some extent, the infilling growth pattern has a certain effect on the enhancement of regional landscape ecological security; (2) In the three control variables (DEM, Population density and GDP), the following conclusions are drawn: regional landscape planning should reasonably allocate landscape resources according to the local topographic features to obtain a higher landscape ecological security; The increase of population density leads to the fragmentation and diversity of the landscape in some regions, which makes the landscape ecological security weak; more economically developed areas have stronger landscape ecological security. This paper highlights the importance of urban growth patterns to landscape ecological security. In addition, considering the different urban evolution trajectories in developed and developing countries, this study proposes targeted development recommendations, providing a reference for urban managers to formulate reasonable development policies and to realize sustainable development with the goal of landscape safety management and control.

The Spatiotemporal Evolution of Ecological Security in Border Areas: A Case Study of Southwest China

“…In China, significant differences in socio-economic development and natural conditions among regions have caused the factors influencing ES in different regions to vary [12,17,22,26,[72][73][74][75] (Figure 9). For the border areas in Yunnan Province, we found that the fixed asset investment, per capita fiscal revenue, per capital GDP, and food production are the main factors creating obstacles to improving the level of ES, which is consistent with previous research results [73].…”

Navigating ecological security research over the last 30 years: a scoping review

“…For example, Zhou et al (2014) used the following five landscape metrics to reflect ecological security: patch density, mean shape index, area-weighted mean patch fractal dimension, contagion, and Shannon's diversity index, each of which represents a different landscape characteristic. Similarly, Rao et al (2021) used both class-level metrics (percentage of patch type, shape index, and patch density) and landscapelevel metrics (mean patch area, edge density, aggregation index, and diversity index).…”

“…The key factors affecting ecological security were identified by the Geo-detector, a tool that can reveal the driving factors of stratified spatial heterogeneity. Based on the geographically weighted regression model, Rao et al (2021) analyzed the impact of urban growth patterns (characterized by elevation, population density, and gross domestic product) on ecological security (characterized by landscape indices).…”

“…Additionally, many studies have comprehensively reported the ecological security degree by establishing indicator systems that reflect the state of the natural ecosystems and social systems (e.g., Xu et al 2019;Liu et al 2021b). Spatial analysis methods driven by advances in geographic information system (GIS) technology are also increasingly used to evaluate ecological security (e.g., Liu et al 2021a;Rao et al 2021). Despite the proliferation of evaluation methods on ecological security, the differences in the applied methodologies have hindered effective decision-making because the results of different evaluation schemes cannot be easily compared, thereby making it difficult to accurately compare the ecological security status measured in different studies.…”

Decline in Environmental Quality and Spatial Dynamics of New City Area Development Metropolitan Mamminasata, South Sulawesi, Indonesia

“…Suburbanization is a factor that affects the expansion of urban areas to suburban areas causing changes in spatial patterns due to increased development activities [8,9]. Thus, it is necessary to regulate the use of space and the allocation of landscape resources in a reasonable manner in order to achieve environmental balance towards sustainable development [10,11].…”