生态系统恢复工程对康平地区生态系统格局的影响
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李虹(1963—), 女, 辽宁沈阳人, 理学硕士, 教授, 主要从事区域地理研究。E-mail: lhxt10@163.com

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P237.2

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国家自然科学基金项目(42071343)


Impact of Ecosystem Restoration Project on Ecosystem Pattern in Kangping Area
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    摘要:

    为了对自1999年起辽宁省沈阳市康平县实施的生态系统恢复工程的成效进行评估, 利用多期Landsat影像解译了康平地区陆表生态系统时空分布特征; 利用气候要素回归分析、生态系统转移矩阵以及生态系统综合人类扰动指数等研究方法, 对康平地区自1984年以来的陆表生态系统格局进行了研究, 特别是对生态系统恢复工程实施20年来的生态系统时空变化规律进行了探索, 并分析了其演变的驱动力机制。结果表明: (1)1999—2020年康平地区的生态系统格局发生显著变化, 主要表现为沙地面积占比减少35.391%, 耕地面积占比减少6.240%, 林地面积大幅增加。(2)通过对气候要素回归分析得出, 研究时间段内康平地区气候整体转湿, 并且在生态系统恢复工程实施后尤为显著, 适合陆表植被生长和恢复。研究最终得出, 康平地区生态系统格局演变的主要驱动力为该地区自上世纪末实施的一系列生态系统恢复工程, 辅助驱动力为该地区年起沙风天数减少和气候转湿的结论。

    Abstract:

    In order to evaluate the effectiveness of the ecosystem restoration project implemented in Kangping County, Shenyang City, Liaoning Province, since 1999, the temporal and spatial distribution characteristics of the land surface ecosystem in Kangping area were interpreted by using multi-period landsat images. The pattern of the land surface ecosystem in Kangping area since 1984 were studied by using the research methods such as the regression analysis of climate elements, the ecosystem transfer matrix and the comprehensive human disturbance index of the ecosystem. In particular, the temporal and spatial changes of the ecosystem in the past 20 years since the implementation of the ecosystem restoration project were explored and the driving force mechanism of its evolution was analyzed. The results showed that: (1) During 1999—2020, the ecological system pattern of Kangping area changed significantly, which was mainly reflected in reduction of the proportion of sandy land by 35.391%, reduction of the proportion of cultivated land by 6.240%, and a substantial increase in the area of forest land. (2) Through regression analysis of climatic elements, we found that the overall climate in Kangping area became wet during the study period, especially after the implementation of the ecosystem restoration project, which was suitable for the growth and restoration of land surface vegetation. Finally, it was concluded that the main driving force for the evolution of the ecological system pattern of Kangping area was a series of ecosystem restoration projects implemented in the region since the end of the last century, and the auxiliary driving force was the decrease of the days of the sand-driving wind per year the climate humidification in the region.

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李虹, 朱洪波, 王钟书, 宁新元, 王烽旭.生态系统恢复工程对康平地区生态系统格局的影响[J].水土保持学报,2022,36(1):95~100,109

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  • 收稿日期:2021-07-02
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  • 在线发布日期: 2022-01-25
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