杨靖, 段禾祥, 宋福强, 等. 2000—2020年高黎贡山景观生态风险时空演变分析[J]. 西南林业大学学报(自然科学), 2024, 44(4): 54–63. DOI: 10.11929/j.swfu.202311004
引用本文: 杨靖, 段禾祥, 宋福强, 等. 2000—2020年高黎贡山景观生态风险时空演变分析[J]. 西南林业大学学报(自然科学), 2024, 44(4): 54–63. DOI: 10.11929/j.swfu.202311004
Yang Jing, Duan Hexiang, Song Fuqiang, Wang Jun, Ren Zhengtao, Jiang Zhicheng, Chen Yihui. Spatiotemporal Evolution of Landscape Ecological Risk in the Gaoligong Mountain, 2000–2020[J]. Journal of Southwest Forestry University, 2024, 44(4): 54-63. DOI: 10.11929/j.swfu.202311004
Citation: Yang Jing, Duan Hexiang, Song Fuqiang, Wang Jun, Ren Zhengtao, Jiang Zhicheng, Chen Yihui. Spatiotemporal Evolution of Landscape Ecological Risk in the Gaoligong Mountain, 2000–2020[J]. Journal of Southwest Forestry University, 2024, 44(4): 54-63. DOI: 10.11929/j.swfu.202311004

2000—2020年高黎贡山景观生态风险时空演变分析

Spatiotemporal Evolution of Landscape Ecological Risk in the Gaoligong Mountain, 2000–2020

  • 摘要: 为揭示高黎贡山景观生态风险时空演变特征,以高黎贡山区域2000年、2005年、2010年、2015年、2020年5期生态系统类型数据为基础,选取景观干扰度和景观脆弱度构建生态风险评价模型,从格网尺度开展区域景观生态风险评价,分析其时空特征。结果表明:研究区以森林为主,占45%以上,2000—2020年景观平均生态风险下降19.60%,呈现“以低、较低生态风险分布为主,森林分布为低风险主导因素”的特点。景观生态风险总体呈现以“东北、西南”为中心的低风险聚集区和以“西北、东南”为中心的高风险聚集区交叉分布的空间格局,风险质心表现为低等级“北进”和中高等级“南退”的迁移特点。研究时域内景观生态风险以低−低聚集区为主,占显著变化区域面积的56%以上,出现局部风险急剧变化的可能性较低。研究结果可为高黎贡山区域景观格局优化、生态风险防范方面提供科学依据。

     

    Abstract: In order to reveal the temporal and spatial evolution characteristics of landscape ecological risk in Gaoligong Mountain, based on the ecosystem types data from 2000, 2005, 2010, 2015, and 2020 in the Gaoligong Mountain region, the ecological risk assessment model consists of landscape disturbance and landscape vulnerability. Ecological risk assessment of the region is conducted at a grid scale to analyze its spatiotemporal characteristics. The results show that the study area is dominated by forests, accounting for more than 45% of the total area of the study area, from 2000 to 2020, the average ecological risk of the landscape has decreased by 19.60%, showing a characteristic of "low and relatively low ecological risk distribution as the main pattern, with forest distribution as the dominant factor of low risk". The overall spatial pattern of landscape ecological risk exhibits a low-risk aggregation area centered on the northeast and southwest, and a high-risk aggregation area centered on the northwest and southeast, with a cross-distribution, the centroid of ecological risk shows a migration characteristic of low-grade "northward" and medium-high-grade "southward". In the study period, the landscape ecological risk mainly shows as low-low aggregation areas, accounting for more than 56% of the significantly changed area, indicating a low possibility of drastic changes in local risk. The research results can provide a scientific evidence for optimizing the landscape pattern and preventing ecological risks in the Gaoligong Mountain region.

     

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