邓诗语, 刘少坤, 黄李澄, 陆汝成, 卢盛权, 邓源. 中国西部地区生态用地稳定性及空间格局分析[J]. 中国生态农业学报 (中英文), 2024, 32(9): 1−16. DOI: 10.12357/cjea.20230397
引用本文: 邓诗语, 刘少坤, 黄李澄, 陆汝成, 卢盛权, 邓源. 中国西部地区生态用地稳定性及空间格局分析[J]. 中国生态农业学报 (中英文), 2024, 32(9): 1−16. DOI: 10.12357/cjea.20230397
DENG S Y, LIU S K, HUANG L C, LU R C, LU S Q, DENG Y. Ecological land stability and spatial pattern in western China[J]. Chinese Journal of Eco-Agriculture, 2024, 32(9): 1−16. DOI: 10.12357/cjea.20230397
Citation: DENG S Y, LIU S K, HUANG L C, LU R C, LU S Q, DENG Y. Ecological land stability and spatial pattern in western China[J]. Chinese Journal of Eco-Agriculture, 2024, 32(9): 1−16. DOI: 10.12357/cjea.20230397

中国西部地区生态用地稳定性及空间格局分析

Ecological land stability and spatial pattern in western China

  • 摘要: 中国西部地区是维护全国生态安全的重要屏障, 西部大开发战略实施20多年以来, 一系列重大生态建设工程使西部地区的生态状况和生态服务发生了重要变化, 西部地区生态稳定性格局的探索对宏观生态用地管理具有重要意义。本文基于西部地区土地利用/土地覆盖遥感监测数据对2000—2020年西部地区生态用地稳定性指数的时空动态变化进行分析。结果表明: 1) 2000—2020年西部地区生态用地总量呈先下降后增加的趋势, 在2000—2010年生态用地面积减少2232.71万hm2, 2010—2020年面积增加102.56万hm2。两个时段的稳定性生态用地空间分布变化不大, 稳定性生态用地以草地与森林为主。2) 2000—2010年和2010—2020年西部地区整体生态用地稳定性指数分别为48.46%和53.68%。2000—2020年生态稳定性指数存在显著聚集, 生态用地稳定性格局以高-高聚集区和低-低聚集区为主, 两种类型生态稳定性空间前后期分别占总面积的48.17%和46.70%; 高-高聚集区、高-低异常值区面积呈增加趋势, 低-低聚集区、低-高异常值区呈下降的趋势。3)冷点区域总面积减少1026万hm2, 热点区域总面积增加206万hm2, 表明西部地区生态稳定性指数在缓慢提升的同时, 稳定性生态用地的集聚效应也有所提高。

     

    Abstract: Western China presents an important barrier to maintaining national ecological security. Since the Western Development Strategy was implemented over 20 years ago, major ecological construction projects have led to significant changes in the ecological conditions and services in the western region. Exploring the ecological stability patterns in the western region is important for macroecological land management. This study analyzed the spatiotemporal dynamic changes in the ecological land stability index in the western region from 2000 to 2020 based on remote sensing monitoring data of land use/land cover. The results showed the following: 1) From 2000 to 2020, the total amount of ecological land in the western region decreased and then increased. From 2000 to 2010, the ecological land area decreased by 2232.71 ×104 hm2; from 2010 to 2020, the area increased by 102.56×104 hm2. The spatial distribution of stable ecological land did not change significantly during the two periods, with stable ecological land consisting mainly of grasslands and forests. 2) The overall ecological land stability indexes in the western region from 2000 to 2010 and 2010 to 2020 were 48.46% and 53.68%, respectively. There was a significant clustering of ecological stability indexes from 2000 to 2020. The ecological land stability pattern mainly comprised high-high and low-low clustering areas, accounting for 48.17% and 46.70%, respectively. Areas of high-high clustering and high-low outliers showed an upward trend, while low-low clustering and low-high outlier areas showed a downward trend. 3) The total cold spot area decreased by 1026×104 hm2, and the total hot spot area increased by 206×104 hm2, indicating that, while the ecological stability index in the western region was slowly improving, the agglomeration effect of stable ecological land has also improved.

     

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