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首页> 外文期刊>Landscape and ecological engineering >Landscape pattern changes at a catchment scale: a case study in the upper Jinjing river catchment in subtropical central China from 1933 to 2005
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Landscape pattern changes at a catchment scale: a case study in the upper Jinjing river catchment in subtropical central China from 1933 to 2005

机译：流域尺度景观格局变化：以中国亚热带中部晋京河上游流域为例（1933-2005）

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摘要

Land use and cover changes have been reported to have a great association with the alteration of regional ecological functions, and, thus, pose significant changes to the environmental quality. The analysis of landscape pattern changes is regarded as one of the most important prerequisites to quantify such land use and cover changes. Four-year land use maps (1933, 1955, 1990, and 2005) of the upper Jinjing river catchment in Hunan Province in subtropical central China, consisting of an area of 13,500 ha and containing three administrative districts (ADs) (Jinjing, Guanjia, and Tuojia), were used for analyzing the landscape pattern changes. Our results showed that a major landscape pattern has been established since 1933. A moderate changing trend, the decrease of woodland resulting from the increase of paddy field, was also observed. From 1933 to 2005, 1,270 ha of woodland were converted to paddy field, accounting for 13 % of the woodland present in 1933. An analysis of landscape indices demonstrated that the catchment landscape became more heterogeneous from 1933 to 1990, and that the patch fragmenting trend has remained fairly stable since 1990. Compared to the other two ADs, Jinjing showed a contrasting trajectory in the temporal trend of the largest patch index, indicating a distinct urbanization in that AD since 1990. Guanjia showed a different temporal trend in the perimeter-area fractal dimension, suggesting that this district was experiencing disordered development, and, thus, a comprehensive planning should be a concern. The predominant driving forces for the land use changes were found to be the terrain and the governmental policies. Climate change and anthropogenic activities (e.g., rapid population growth and migration) may also be important factors that have impacted the landscape changes of the studied catchment.
机译：据报道，土地利用和覆盖变化与区域生态功能的变化有很大的联系，因此对环境质量造成了重大变化。对景观格局变化的分析被认为是量化此类土地利用和覆盖变化的最重要前提之一。中国中亚热带湖南省金井河上游流域的四年土地利用图（1933、1955、1990和2005），占地13,500公顷，包含三个行政区（AD）（金井，关家，和拓家），用于分析景观格局的变化。我们的结果表明，自1933年以来已经建立了主要的景观格局。还观察到了适度的变化趋势，即由稻田增加引起的林地减少。从1933年到2005年，有1270公顷的林地被转化为水田，占1933年存在的林地的13％。对景观指数的分析表明，从1933年到1990年，流域景观变得更加异质，并且斑块碎片化趋势自1990年以来一直保持稳定。与其他两个AD相比，Jinjing在最大斑块指数的时间趋势中呈现出相反的轨迹，表明自1990年以来该AD出现了明显的城市化。关家在周边地区中呈现出不同的时间趋势。分形维数，表明该地区正在经历无序发展，因此，应该考虑全面的规划。人们发现，改变土地用途的主要动力是地形和政府政策。气候变化和人为活动（例如人口的快速增长和迁移）也可能是影响所研究流域景观变化的重要因素。

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  • 来源
    《Landscape and ecological engineering》 |2014年第2期|263-276|共14页
  • 作者

    Xinliang Liu; Yong Li; Jianlin Shen; Xiaoqing Fu; Runlin Xiao; Jinshui Wu;

  • 作者单位

    Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan 410125, P.R. China;

    Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan 410125, P.R. China;

    Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan 410125, P.R. China;

    Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan 410125, P.R. China;

    Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan 410125, P.R. China;

    Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan 410125, P.R. China;

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  • 正文语种 eng
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  • 关键词

    Landscape indices; Land use transition matrix; Driving forces;

    机译：景观指数;土地利用过渡矩阵;驱动力;

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