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Policy-Driven Vegetation Restoration in Qinghai Province: Spatiotemporal Analysis and Policy Evaluation

Author

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  • Yuchen Zhang

    (School of Public Administration, China University of Geosciences, Wuhan 430070, China)

  • Jianghong Zhu

    (School of Public Administration, China University of Geosciences, Wuhan 430070, China)

  • Lin Wang

    (Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China)

  • Ke Wang

    (School of Land Science and Technology, China University of Geosciences, Beijing 100083, China)

  • Jianjun Zhang

    (School of Land Science and Technology, China University of Geosciences, Beijing 100083, China
    Key Laboratory of Land Consolidation and Rehabilitation, Ministry of Natural Resources, Beijing 100083, China)

Abstract

The Chinese government has implemented numerous ecological policies in Qinghai Province aimed at protecting and restoring the natural ecosystem. Yet, amid global climate change, the precise effects of these policies on ecological improvement remain ambiguous. There is an urgent need for a comprehensive evaluation of the effects of these policies at a regional scale and an analysis of the changes in policy implementation stages to optimize the strategic direction of regional ecological policies. In this study, using mathematical statistics and spatial analysis, we analysed the spatial and temporal characteristics of the Normalized Difference Vegetation Index (NDVI) in Qinghai Province from 2000 to 2023. Further, by systematically reviewing ten major ecological policies currently or previously implemented in the region, we explored the response of vegetation restoration to these policies through both horizontal and vertical evaluations by reasonably delineating the policy study sub-zones. The study identified distinct stages of policy implementation—regreening, stabilizing, and natural recovery—and correlated these stages with the efficacy of policy impacts. Our findings indicate significant vegetation coverage improvements across Qinghai Province over the past two decades, with all ecological policies positively influencing the environment. The main contribution of this study is that it comprehensively evaluates the impact of multiple ecological policies on vegetation restoration at the regional scale, providing a reference for the formulation and adjustment of subsequent ecological policies.

Suggested Citation

  • Yuchen Zhang & Jianghong Zhu & Lin Wang & Ke Wang & Jianjun Zhang, 2024. "Policy-Driven Vegetation Restoration in Qinghai Province: Spatiotemporal Analysis and Policy Evaluation," Land, MDPI, vol. 13(7), pages 1-22, July.
    • Handle: RePEc:gam:jlands:v:13:y:2024:i:7:p:1052-:d:1434745
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    References listed on IDEAS

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