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Assessing the regulatory efficacy of National Key Ecological Function Zones on ecosystem service balance
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Assessing the regulatory efficacy of National Key Ecological Function Zones on ecosystem service balance
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Journal Article
Assessing the regulatory efficacy of National Key Ecological Function Zones on ecosystem service balance
2025
Overview
Balancing ecosystem service supply and demand is essential for regional sustainable development. The designation of National Key Ecological Function Zones (NKEFZs) serves as a critical policy tool to strengthen ecological regulation. This study evaluates four key ecosystem services—water provision (WP), crop production (CP), carbon storage (CS), and habitat quality (HQ) —in Hubei Province from 2005 to 2022, analyzing supply-demand surpluses and deficits, spatial-temporal dynamics, and the policy impact of NKEFZs using a staggered difference-in-differences (DID) approach. The results show that the supply-demand balance exhibits notable spatial heterogeneity: (1) WP follows a ‘southern surplus–northern deficit’ pattern, CP and HQ show a ‘western surplus–eastern balance’ structure, and CS presents a ‘western surplus–eastern deficit’ configuration. (2) Temporally, from 2005 to 2022, the WP index rose from 0.12 to 0.30, CP increased from 0.63 to 0.90, CS declined from −0.03 to −0.38 despite a reduced deficit extent, and HQ remained stable though deficits expanded in eastern urban areas. (3) Comprehensive spatial-temporal analysis shows that surpluses are concentrated in western regions, while deficits dominate central and eastern cities, with most eastern and western areas improving, in contrast to declining trends in central cities; the province-wide average index rose from 0.45 to 0.51. (4) The DID results confirm that the NKEFZs policy significantly improved the balance of ecosystem services, with the effect remaining robust after multiple tests. This study offers a scientific basis for optimizing ecological protection policies and advancing sustainability through improved ecosystem service management.
Publisher
IOP Publishing
