中国平潭岛土地覆盖动态及其对景观格局和生态系统服务价值的影响

发布时间：2021-05-20 19:25

　　土地覆盖是一个非常重要的跨领域环境变量,它是水文、气候、土壤、生物多样性、自然灾害和生物地球化学循环等不同环境问题的中心。生态系统服务的可用性和可持续性,其作为人类的生存基础也正日益受到来自土地变化研究的关注。因此,一些国家和国际项目对土地覆盖变化（LCC）信息给予了高度重视。此外,无论是基于光谱还是基于类别,土地覆盖监测对于机构制定和执行环境政策或检查现有政策的影响都至关重要。由于平潭岛内有限的空间,因此在快速发展经济的同时,引起了LCC和滨海围垦现象。值得注意的是,自从成立平潭综合实验区并且确定国际旅游岛和自由贸易区的总体经济发展规划以来,其社会经济的发展更加快速。然而,截至目前,对于平潭岛土地覆盖的具体变化情况、地块布局情况以及驱动因子方面的研究仍然较少。因此,本文对平潭岛土地覆盖斑块的空间组成及配置、驱动因素以及其对平潭岛生态系统服务的影响进行综合量化研究,研究主要包括四个阶段,分别为1984-1996（第一阶段）、1996-2007（第二阶段）、2007-2017（第三阶段）和1984-2017（整个阶段）。本文利用遥感和地理信息系统（GIS）技术,分别获得平潭岛1984年（... 

【文章来源】：福建师范大学福建省

【文章页数】：197 页

【学位级别】：博士

【文章目录】：
摘要
Abstract
List of Abbreviations
Chapter 1 Introduction
    1.1 Background
    1.2 Motivation
    1.3 Research objectives and hypothesis
    1.4 Structure of the thesis
Chapter 2 Literature Review
    2.1 The concepts of related terms in land change studies
    2.2 Research progress on land cover change
        2.2.1 Land cover change as an international focus of research
        2.2.2 The status of LCC studies in China
        2.2.3 Applications of remote sensing for LCC detections
        2.2.4 Techniques of LCC analysis
            2.2.4.1 Units of analysis and classification approaches
            2.2.4.2 Accuracy assessment
            2.2.4.3 Quantification of LCC
    2.3 Landscape pattern
    2.4 Drivers of LCC
    2.5 Ecosystem services values
    2.6 Summary
Chapter 3 Description of the study area and data sources
    3.1 Description of the study area
        3.1.1 Physical geography
        3.1.2 Socioeconomic profiles
    3.2. Data sources and processing
        3.2.1 Landsat datasets
        3.2.2 Image Preprocessing
        3.2.3 Other remote sensing datasets
        3.2.4 Socioeconomic data sources
Chapter 4 Spatiotemporal dynamics of land cover in Pingtan
    4.1 Introduction
    4.2 Methods
        4.2.1 Land cover based on vegetation indices
        4.2.2 Image classification and the accuracy assessment
        4.2.3 Trends and magnitude of land cover change
        4.2.4 Class-to-class change detection
    4.3 Results and discussion
        4.3.1 Land cover change based on spectral vegetation indices
            4.3.1.1 Relationships among vegetation indices
            4.3.1.2 Spatiotemporal distribution of fractional vegetation covers
        4.3.2 Post-classification land cover dynamics
            4.3.2.1 Accuracy of land cover classification
            4.3.2.2 Understanding the recent distribution and magnitude of land cover changes
            4.3.2.3 Modes of urban land change and tendencies of its densification
            4.3.2.4 Change detections and the nature of transitions in major land cover types
                4.3.2.4.1 Urban land transitions
                4.3.2.4.2 Vegetation land transitions
                4.3.2.4.3 Farmland transitions
    4.4 Summary
Chapter 5 The spatiotemporal changes in landscape composition and configuration
    5.1 Introduction
    5.2 Methods
        5.2.1 Input data preparations
        5.2.2 Selection of landscape metrics
    5.3 Results and discussion
        5.3.1 Changes in landscape pattern at landscape level
        5.3.2 Class-level landscape patterns of major land cover types
            5.3.2.1 Spatiotemporal patterns of urban landscape
            5.3.2.2 Spatiotemporal patterns of vegetation landscape
            5.3.2.3 Spatiotemporal patterns of farm landscape
    5.4 Summary
Chapter 6 Driving forces of land cover change
    6.1 Introduction
    6.2 Methods
        6.2.1 Natural drivers
        6.2.2 Anthropogenic drivers
            6.2.2.1 Socioeconomic factors
            6.2.2.2 Policy factors
    6.3 Results and discussion
        6.3.1 Natural drivers
        6.3.2 Anthropogenic drivers
            6.3.2.1 Socioeconomic development
            6.3.2.2 Modeling the relationship between socioeconomic drivers and land cover types
                6.3.2.2.1 The influence of socioeconomic factors on urban sprawls
                6.3.2.2.2 The influence of socioeconomic factors on farmland change
                6.3.2.2.3 The influence of socioeconomic factors on vegetation land change
            6.3.2.3 Policy factors
    6.4 Summary
Chapter 7 The status of ecosystem service values
    7.1 Introduction
    7.2 Methods
        7.2.1 Estimation of ecosystem service values
        7.2.2 Sensitivity of ESV to LCC
    7.3 Results and discussion
        7.3.1 Changes in the total ESV
        7.3.2 Changes in ESV of different ecosystem services
        7.3.3 Trade-offs and synergies in the values of sub-ecosystem services
        7.3.4 Analysis of ESV sensitivity to LCC
    7.4 Summary
Chapter 8 Conclusions and the way forward
    8.1 Main conclusion
    8.2 Contributions and innovations of the study
    8.3 Limitations and future prospects
References
List of Publications
Acknowledgements
About the Author


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