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相岭地区大熊猫栖息地土地利用景观格局变化及社会经济影响因素分析

Changes in Land Use and Landscape Patterns and Socio-economic Influences on Giant Panda Habitat in the Xiangling Area, Southwestern China

  • 摘要: 本研究基于2000—2020年5期Landsat卫星遥感影像,采用土地利用转移矩阵、景观格局指数分析了相岭地区大熊猫栖息地土地利用景观格局时空变化特征;利用灰色关联分析量化了人类社会经济发展对栖息地景观格局动态变化的影响。结果表明:20年间该地区大熊猫栖息地的林地斑块总面积经历了“下降—增长—下降—增长”的波动变化过程;大熊猫实际栖息地面积减少,潜在栖息地面积增加。2000—2015年,栖息地内景观格局变化复杂,林地和建设用地、未利用地之间产生大规模转移,景观破碎化程度加剧;2015—2020年,栖息地内景观格局变化较直观,其他地类向林地转化,林地面积显著增加,景观破碎化程度有所减轻。人口增长、农业耕作、放牧规模、能源转型、交通道路是社会经济发展影响栖息地景观格局变化的重要因素,对栖息地景观格局演变具有很大的促进作用。加强对人类社会经济活动干扰的控制可以促进栖息地的恢复,增加未来栖息地的实际面积。最后,基于研究结果对未来相岭地区大熊猫栖息地的保护管理工作提出建议。

     

    Abstract: Based on five phases of Landsat satellite remote sensing imagery from 2000 to 2020, this study analyzed the spatial and temporal characteristics of land use and landscape patterns of giant panda habitats in the Xiangling area of southwestern China using the land use transfer matrix and the landscape pattern index; and quantified the impacts of human socio-economic development on the dynamics of landscape patterns of the habitats using grey correlation analysis. The results show that the total area of the forest patches in the giant panda habitat in this area experienced a process of "decline - growth - decline - growth" in the past 20 years. The actual habitat area of giant pandas decreased, while the potential habitat area increased. In 2000—2015, the landscape pattern within the habitat changed drastically, with large-scale shifts between woodland and built-up and unused land, and increased landscape fragmentation; in 2015—2020, there was less change in the landscape pattern within the habitat with the gradual conversion of other land types to woodland, a significant increase in the area of woodland, and a reduction in the degree of landscape fragmentation. Population growth, agricultural farming, grazing scale, energy transition, and transport roads are important factors by which of socio-economic development affects changes in habitat landscape patterns, and strongly contribute to the evolution of habitat landscape patterns. Increased control of anthropogenic socio-economic disturbance can promote habitat restoration and increase the actual area of future habitats. Finally, based on the results of the study, recommendations are provided for the future conservation and management of giant panda habitats in the Xiangling area.

     

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