| 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得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)西部地区生态用地总量在2000-2010年生态用地面积减少2104.66×10∧4 hm∧2,2010-2020年面积减少38.98×10∧4 hm∧2，2000-2020年间生态用地面积呈不断下降的趋势。两个时段的稳定性生态用地空间分布变化不大,以草地与森林为主。(2)2000-2010年、2010-2020年西部地区整体生态用地稳定性指数分别为47.12%、52.72%,2000-2020年生态稳定性指数存在着显著聚集,生态用地稳定性格局以高?高聚集区和低?低聚集区为主,前期面积占比48.17%,后期面积占比46.78%,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820×10∧4 hm∧2，热点区域总面积增加了206×10∧4 hm∧2，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。 |
| 关键词: 生态用地 生态用地稳定性指数 空间自相关 冷/热点分析 西部地区 |
| 中图分类号:X826 |
| 基金项目:广西研究生教育创新计划资助项目（YCSW2022407） |
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| Analysis of the Spatial Stability and Pattern of Ecological Land in the Western Region |
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Deng Shiyu1, Liu Shaokun1, Huang Licheng2, Lu Shengquan1, Deng yuan1
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1.School of Natural Resources and Surveying, Nanning Normal University;2.School of Public Finance and Administration,Jiangxi University of Finance and Economics
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| Abstract: Western China is an important barrier to maintain the national ecological security. Since the implementation of the Western Development Strategy for more than 20 years, a series of major ecological construction projects have made important changes in the ecological situation and ecological services in the western region. The exploration of the ecological stability pattern in the western region is of great significance to the macro ecological land management. This article analyzes the spatiotemporal dynamic changes of 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 show that: (1) The total ecological land use in the western region decreased by 2104.66 from 2000 to 2010 × 104 hm2- Area reduction by 38.98 in 2020 × The ecological land area showed a continuous decreasing trend from 104 hectares to 2020. The spatial distribution of stable ecological land during the two periods did not show significant changes, with grasslands and forests being the main areas. (2) The overall ecological land stability index of the western region in 2000-2010 and 2010-2020 was 47.12% and 52.72% respectively. The ecological stability index of 2000-2020 was significantly clustered. The ecological land stability pattern was dominated by high Ghetto and low Ghetto. The area in the early stage accounted for 48.17%, and the area in the later stage accounted for 46.78%. The area of high high Ghetto and high low Outlier increased, and the area of low low Ghetto The low high Outlier area shows a downward trend. (3) The total area of the cold spot area has decreased by 820 × 104 hm2, the total area of hot spots has increased by 206 × 104 hm2 indicates that while the ecological stability index in the western region is slowly improving, the agglomeration effect of stable ecological land has also improved. |
| Keyword: Ecological land Ecological land stability index Spatial autocorrelation Cold/hot spot analysis Western region |