首页|基于InVEST模型的咸阳市生物多样性评价及生态廊道构建研究

基于InVEST模型的咸阳市生物多样性评价及生态廊道构建研究

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在快速城镇化进程以及不合理的资源利用背景下,咸阳市的生态环境受到影响.为最大限度地保护生物资源,巩固咸阳生态安全格局,使用InVEST生境质量评估模型,结合NPP法,将咸阳市生境划分为优、良、中、差4个等级,从而研究土地利用变化对生境质量的影响;将咸阳市生物多样性维护等级分为极重要、重要、一般重要三个等级,从而评价咸阳地区的生物多样性维护重要性.综合生境质量评估结果与生物多样性维护等级,利用最小阻力模型构建生态廊道.结果表明:2000-2020年咸阳地区耕地面积减少了327.33 km2;建设用地面积增长了263.88 km2;林地、草地等生态用地呈现了先增长后减少的趋势.质量优等级的生境持续减少了60.56 km2,差等级的生境整体增加70.93 km2,生境质量出现退化.咸阳市生物多样性维护重要性以一般重要为主,极重要区和重要区面积分别为896.54 km2和866.66 km2.生物多样性与生境质量密切相关.基于评价结果,通过阻力模型,构建生态廊道1 303.96 km,并提出咸阳市生物多样性保护的方法和优化对策,以期为今后咸阳市动物迁徙及生物多样性保护提供基础与保障.
Biodiversity Assessment and Ecological Corridor Construction in Xianyang City Based on InVEST Model
Due to the rapid urbanization and unreasonable utilization of resources,the ecological environment of Xianyang City has been affected.To maximize the protection of biological resources and consolidate the ecological security pattern of Xianyang city,this paper used the InVEST habitat quality assessment model and NPP method to divide the habitats of Xianyang city into four grades:excellent,good,medium,and poor,to study the impact of land use change on habitat quality.To evaluate the importance of biodiversity conservation in Xianyang,biodiversity conservation was divided into three levels:very important,meaningful,and generally necessary.Based on the habitat quality assessment and biodiversity maintenance level results,the ecological corridor was constructed using the minimum resistance model.The results showed that the cultivated land area of Xianyang decreased by 327.33 km2 from 2000 to 2020.Construction land area increased by 263.88 km2.The ecological land,such as for-est land and grassland,showed a trend of increasing and decreasing.The habitat of high-quality grade continued to decline by 60.56 km2,and the poor-quality habitat increased by 70.93 km2.The importance of biodiversity conservation in Xianyang City is mainly of general importance,and the critical and essential areas are 896.54 km2 and 866.66 km2,respectively.Biodiversity is closely related to habitat quality.Therefore,based on the evaluation results,a 1 303.96 km ecological corridor was constructed through the resistance model,and methods and optimization countermeasures for biodiversity conservation in Xianyang City were proposed to provide the basis and guarantee for animal migration and biodiversity conservation in Xianyang City in the future.

biodiversity conservationhabitat quality assessmentland use changeecological corridor constructionoptimization strategy

赵子馨、邱玲、高天

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西北农林科技大学风景园林艺术学院,杨凌 712100

生物多样性保护 生境质量评估 土地利用变化 生态廊道构建 优化策略

国家自然科学基金面上项目陕西省林业科技创新重点专项陕西省林业科学院科技创新计划专项

31971722SXLK2023-02-18SXLK2021-0216

2024

10.12193/j.laing.2024.04.0027.004

园林
中国风景园林学会 上海市园林科学研究所

园林

影响因子：0.13
ISSN：1000-0283
年,卷(期)：2024.41(4)
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