Landscape Ecological Risk Assessment and Zoning Control Based on Ecosystem Service Value: Taking Sichuan Province as an Example

Abstract

The escalation of urbanization in Sichuan Province has resulted in irrational land use and excessive resource exploitation. These developments have consequently diminished the functionality of ecosystem services and exacerbated landscape fragmentation in the region. These challenges pose significant threats to the ecological security of the area. In this study, we computed the ecosystem service value and the landscape ecological risk index of Sichuan Province from 2005 to 2018. We analyzed the spatial autocorrelation between the ecosystem service value and the landscape ecological risk index, constructing a framework for landscape ecological risk assessment and zoning control based on ecosystem service value. The results show the following: (1) Between 2005 and 2018, the total value of ecosystem services in Sichuan Province increased from CNY 10,261.17 × 108 to CNY 10,310.43 × 108, with forest land and grassland being the primary contributors to the ESV. (2) High- and higher-risk areas within the landscape ecology of Sichuan Province are expanding, forming a pattern of high-level risk concentration from west to east. (3) There exists a negative correlation between the ecosystem service value and the landscape ecological risk index in Sichuan Province. (4) In the ecological conservation zone, the principle of low-impact development must be upheld. In the ecological cultivation zone, adjusting the proportion of land use types is necessary to enhance the rationality of the land use structure. The ecological agricultural zone should fully utilize the advantages of agriculture, while the ecological improvement zone requires focused attention to ecological restoration and land remediation.

Ecological Zoning Based on Value–Risk in the Wuling Mountains Area of Hunan Province

“…Therefore, it is crucial to maintain a harmonious balance between economic development and the ecological environment. It is necessary to continuously focus on constructing projects that enhance vegetation coverage, improve the quality of the ecological environment [24], and optimize land utilization.…”

Dynamic Land-Use Patterns and the Associated Impacts on Ecosystem Services Value in Putian City, China

“…Land-use changes (LUCs) are regarded as the most prominent and direct driver of terrestrial ecosystems, capable of profoundly altering ecosystem dynamics and their spatial distribution, thereby impacting ecosystem structure and function and often diminishing the ecosystem's capacity to provide diverse essential services [1][2][3][4][5]. Ecosystem services (ESs) encompass a broad range of benefits derived by humans from the structure, function, and processes of ecosystems.…”

A Multi-Scenario Simulation and Dynamic Assessment of the Ecosystem Service Values in Key Ecological Functional Areas: A Case Study of the Sichuan Province, China

“…Sichuan Province has experienced rapid urbanization following the last century, and its urbanization rate has surpassed the national average. This, coupled with its high susceptibility to natural disasters due to its considerable terrain variations and increasing population density, has further exacerbated the disturbance of local ecosystems [40]. Since 2000, Sichuan Province has implemented multiple significant ecological protection and restoration projects, including the restoration of cropland to forests, the protection of natural forest resources, the construction of the shelterbelt system, and the restoration of grazing land to grassland [35].…”