湖北农业科学 ›› 2023, Vol. 62 ›› Issue (7): 38-43.doi: 10.14088/j.cnki.issn0439-8114.2023.07.007

• 资源·环境 • 上一篇    下一篇

2000—2020年重庆市土地利用变化及景观生态风险评价

孙贵艳, 代云川   

  1. 重庆社会科学院生态与环境资源研究所/生态安全与绿色发展研究中心,重庆 400020
  • 收稿日期:2022-05-30 出版日期:2023-07-25 发布日期:2023-08-15
  • 作者简介:孙贵艳(1984-),女,山东临沂人,研究员,博士,主要从事区域经济研究,(电话)19112055968(电子信箱)sgygood@126.com。
  • 基金资助:
    国家社科基金一般项目(21BJY170)

Land use change and landscape ecological risk assessment in Chongqing from 2000 to 2020

SUN Gui-yan, DAI Yun-chuan   

  1. Institute of Ecology and Environmental Resources/Research Center for Ecological Security and Green Development,Chongqing Academy of Social Sciences,Chongqing 400020,China
  • Received:2022-05-30 Online:2023-07-25 Published:2023-08-15

摘要: 基于重庆市2000、2010、2020年的土地利用数据,分析其土地利用动态变化特征,并利用景观脆弱度指数和景观格局指数建立生态风险评价模型,对生态风险时空变化特征进行评价。结果表明,2000—2020年,重庆市主要土地利用类型为耕地、林地;人造地表、林地、水体面积不断增加,耕地、草地、灌木地、湿地面积不断减少,其中,人造地表面积明显增加,且主要来自耕地;重庆市各时期景观生态风险在空间上呈正向集聚效应,高-高集聚区呈减少趋势;重庆市以中生态风险区、较低生态风险区为主,整体生态风险逐渐减弱。需针对不同生态风险区,采取差异化的土地利用措施。

关键词: 土地利用, 景观格局, 景观生态风险评价, 重庆市

Abstract: Based on the land use data of Chongqing in 2000, 2010, and 2020, the dynamic changes in land use characteristics were, and analyzed an ecological risk assessment model was established using the landscape vulnerability index and landscape pattern index to evaluate the spatiotemporal changes in ecological risk. The results indicated that from 2000 to 2020, the main types of land use in Chongqing were arable land and forest land;the area of artificial surface, forest land, and water bodies continued to increase, while the area of arable land, grassland, shrubland, and wetland continued to decrease. Among them, the area of artificial surface had significantly increased, mainly from arable land;the landscape ecological risks in various periods of Chongqing showed a positive agglomeration effect in space, while the high high agglomeration areas showed a decreasing trend;Chongqing was mainly located in areas with medium and low ecological risks, with overall ecological risks gradually weakening. Differentiated land use measures needed to be taken for different ecological risk areas.

Key words: land use, landscape pattern, landscape ecological risk assessment, Chongqing City

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