生态与农村环境学报 ›› 2023, Vol. 39 ›› Issue (12): 1525-1533.doi: 10.19741/j.issn.1673-4831.2023.0530

• 区域环境与发展 • 上一篇    下一篇

基于InVEST模型的1985-2020年忻州市生境质量演变及地形效应

苏敬1, 芮菡艺1, 朱沁园1, 张卫东1, 吴秋菊2, 李士美3, 刘国强1, 朱琳1   

  1. 1. 生态环境部南京环境科学研究所, 江苏 南京 210042;
    2. 苏州市昆山生态环境局, 江苏 昆山 215300;
    3. 青岛农业大学园林与林学院, 山东 青岛 266109
  • 收稿日期:2023-06-09 出版日期:2023-12-25 发布日期:2023-12-27
  • 通讯作者: 刘国强,E-mail:838247836@qq.com;朱琳,E-mail:zhulin@nies.org E-mail:838247836@qq.com;zhulin@nies.org
  • 作者简介:苏敬(1982-),女,山东滨州人,助理研究员,硕士,主要从事生态修复与生态规划、规划环境影响评价研究。E-mail:sujing@nies.org
  • 基金资助:
    中央级公益性科研院所基本科研业务专项重点项目(GYZX190101)

Temporal and Spatial Evolution of Habitat Quality and Its Topographic Gradient Effect in Xinzhou City Based on InVEST Model from 1985 to 2020

SU Jing1, RUI Han-yi1, ZHU Qin-yuan1, ZHANG Wei-dong1, WU Qiu-ju2, LI Shi-mei3, LIU Guo-qiang1, ZHU Lin1   

  1. 1. Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China;
    2. Suzhou Kunshan Bureau of Ecological Environment, Kunshan 215300, China;
    3. College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao 266109, China
  • Received:2023-06-09 Online:2023-12-25 Published:2023-12-27

摘要: 生境质量对土地利用变化和地形因子的生态响应已经成为生态学研究的热点。针对山西省忻州市生境质量的响应状况不清的现状,利用InVEST模型对其1985-2020年生境质量进行评估,并运用地形因子研究其地形梯度效应。结果表明:1985-2020年忻州市土地利用变化主要为耕地、草地间的相互转换以及林地和耕地向建设用地转换。1985-2020年忻州市平均生境质量指数呈先减少后增加的趋势,最低为1990年的0.739 1,最高为2020年的0.787 4。生境质量指数在0.8以上的高等级生境面积逐渐增加,主要分布在山区和黄土沟壑区;生境质量指数在0.2~0.4间较低等级生境面积逐渐减少,主要分布在盆地区;生境质量指数在0.2以下的低等级生境也逐渐增加。1985-2020年生境质量变化表现出明显的空间分异特征:西部8县明显增益,东南部忻府区和定襄县显著减损,同时具有显著的地形梯度效应;低地形梯度的盆地区生境质量有所退化,中地形梯度的黄土沟壑区生境质量提高幅度最大,高地形梯度的山地区生境质量最高。研究结果可为区域生态质量改善、生态用地优化提供决策参考。

关键词: 生境质量, 土地利用变化, InVEST模型, 地形梯度, 忻州市

Abstract: The ecological response of habitat quality to land use change and topographical factors has become a prominent subject of research in ecology. In view of the unclear response status of habitat quality in Xinzhou City, Shanxi Province, the InVEST model was used to assess its habitat quality from 1985 to 2020, and the terrain factor was used to study its terrain gradient effect. The results show that the land use change in Xinzhou City during the period of 1985 to 2020 mainly involved the mutual conversion of cultivated land and grassland, as well as the conversion of forest land and cultivated land to construction land. The average habitat quality index in Xinzhou City exhibited a slight decline followed by a significant upward trend, with the lowest being 0.739 1 in 1990 and the highest being 0.787 4 in 2020. The area occupied by higher-quality habitats with the habitat quality index ≥0.8 gradually increased, mainly distributed in mountainous and loess gully areas. The area of lower-quality habitats with the habitat quality index ranges from 0.2 to 0.4 gradually decreased, mainly distributed in basin areas. The low level habitats with the habitat quality index below 0.2 also gradually increased. The change in habitat quality from 1985 to 2020 demonstrated clear spatial differentiation: significant gains in 8 counties in the west, notable losses in Xinfu District and Dingxiang County in the southeast. Meanwhile, there is a significant topographic gradient effect, and the habitat quality in basin areas with low terrain gradients has degraded in certain extent. The improvement in habitat quality is greatest in the loess gully area with medium terrain gradient. The habitat quality is highest in mountainous areas with high terrain gradients. The research results can provide decision-making references for improving regional ecological quality and optimizing ecological land use.

Key words: habitat quality, land use change, InVEST model, topographic gradient, Xinzhou City

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