| 引用本文： |
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何继业,梁玉莲,区富有,文凤,彭波.基于InVEST模型的广西生境质量时空变化研究[J].广西科学,2025,32(2):362-373. [点击复制]
- HE Jiye,LIANG Yulian,OU Fuyou,WEN Feng,PENG Bo.Temporal and Spatial Variations of Habitat Quality in Guangxi Based on the InVEST Model[J].Guangxi Sciences,2025,32(2):362-373. [点击复制]
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| 摘要: |
| 生境质量(Habitat quality)反映生态系统健康与生物多样性水平，对维持生态平衡至关重要，而土地利用变化是塑造和改变生境的关键因素之一。本研究聚焦广西土地利用变化对生境质量的影响，在分析2000-2020年土地利用变化的基础上，采用InVEST模型评估区域生境质量变化，并以县域为基本单元，结合双变量地图分析生境质量与退化度的空间关联特征。结果表明：(1)2000-2020年广西建设用地显著增加，而耕地和草地面积有所减少，城镇化和工业化进程是驱动土地利用格局变化的主要力量；(2)生境质量退化度指数呈现一定的波动性，区域内优良生境仍占主导地位但呈现轻微的下降趋势，在城镇和农业活动频繁区更为突出，呈现出由内而外递减的空间分异特征；(3)生境质量的空间自相关性呈现增强的态势，“低-低”聚类区主要分布在市辖区及其邻近地区，并有向周边蔓延的趋势，“高-高”聚类区则集中在经济欠发达或人类活动较少的北部山区和东部大瑶山等地县域，但随时间推移有收缩迹象。基于上述结果，本研究建议加强广西城市周边及生态脆弱区的生态保护力度，遏制城市无序扩张，优化土地利用布局；同时在生境质量较高的区域设立自然保护区或生态公园，以维护区域生态系统的稳定性。 |
| 关键词: InVEST模型 生境质量 莫兰指数 土地利用变化 空间分异 |
| DOI：10.13656/j.cnki.gxkx.20250305.001 |
| 投稿时间：2024-04-02修订日期：2024-06-17 |
| 基金项目:国家自然科学基金青年基金项目(42201334);广西重点研发计划项目(桂科AB22080101)和自然资源数字产业学院建设项目资助。 |
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| Temporal and Spatial Variations of Habitat Quality in Guangxi Based on the InVEST Model |
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HE Jiye1, LIANG Yulian1, OU Fuyou2, WEN Feng1, PENG Bo3
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| (1.School of Geography and Planning, Nanning Normal University, Nanning, Guangxi, 530001, China;2.Guangdong Detachment of the Armed Marine Police, Guangzhou, Guangdong, 510000, China;3.Guangxi Research Academy of Environmental Sciences, Nanning, Guangxi, 530022, China) |
| Abstract: |
| Habitat quality serves as an indicator of ecosystem health and biodiversity conservation status,being essential for maintaining ecological balance.Land use changes have emerged as a pivotal driver shaping and altering habitats.This study investigates the impacts of land use changes on the habitat quality in Guangxi.On the basis of the analysis of land use changes from 2000 to 2020,the InVEST model was used to assess changes in regional habitat quality.With county as the basic unit,bivariate maps were employed to analyze the spatial correlation characteristics between habitat quality and degradation.The results are summarized as follows.(1) From 2000 to 2020,there was a significant increase in construction land in Guangxi,while the area of cultivated land and grassland decreased.Urbanization and industrialization were the main forces driving changes in land use patterns.(2) The habitat degradation index fluctuated,with excellent habitats still dominating the region but showing a slight downward trend,which was especially prominent in areas with frequent urban and agricultural activities,presenting a spatial differentiation characteristic of decreasing from the inside to the outside.(3) The spatial autocorrelation of habitat quality showed a trend of strengthening.Specifically,the “low-low” cluster areas were mainly distributed in municipal districts and adjacent areas and showed a trend of spreading to surrounding areas.The “high-high” cluster areas were concentrated in underdeveloped areas or areas with less human activities,such as the mountain areas in the north and Dayao Mountain in the east,while they presented signs of shrinking over time.According to the results,it is suggested that Guangxi should strengthen the protection of areas around cities and ecologically vulnerable areas,control the disorderly spread of cities,and optimize land use layout.At the same time,natural reserves or ecological parks should be established in areas with high habitat quality to maintain the stability of regional ecosystems. |
| Key words: InVEST model habitat quality Moran's index land use changes spatial differentiation |
