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应用生态学报 ›› 2023, Vol. 34 ›› Issue (11): 3053-3063.doi: 10.13287/j.1001-9332.202311.019

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青藏高原土地利用格局和生态系统服务的时空演变特征及关系

郝嘉元1, 智烈慧1,2, 李晓文1*, 董世魁3, 李巍1   

  1. 1北京师范大学环境学院, 北京 100875;
    2河北工程大学地球科学与工程学院, 河北邯郸 056038;
    3北京林业大学草业与草原学院, 北京 100083
  • 收稿日期:2023-06-05 修回日期:2023-09-01 出版日期:2023-11-15 发布日期:2024-05-15
  • 通讯作者: *E-mail: lixw@bnu.edu.cn
  • 作者简介:郝嘉元, 女, 2000年生, 硕士研究生。主要从事生态保护修复、生态资产优化研究。E-mail: haojiayuann@163.com
  • 基金资助:
    第二次青藏高原综合科学考察研究项目(2019QZKK0307)

Temporal and spatial variations and the relationships of land use pattern and ecosystem services in Qinghai-Tibet Plateau, China.

HAO Jiayuan1, ZHI Liehui1,2, LI Xiaowen1*, DONG Shikui3, LI Wei1   

  1. 1College of Environment, Beijing Normal University, Beijing 100875, China;
    2College of Earth Science and Engineering, Hebei University of Engineering, Handan 056038, Heibei, China;
    3College of Grassland Science, Beijing Forestry University, Beijing 100083, China
  • Received:2023-06-05 Revised:2023-09-01 Online:2023-11-15 Published:2024-05-15

摘要: 青藏高原作为全球最大的关键生态热点区域,具有丰富的生态系统服务,但其广阔而独特的高寒生态系统正受到如土地利用集约化等日益严重的人为干扰。本研究旨在探讨1980—2020年青藏高原土地利用规模、时空格局及其变化过程,分析其对主要生态系统服务的影响。采用生态系统服务与权衡综合评价模型模拟研究了生境质量、碳储存、产水量3种生态系统服务的时空变化趋势,分析了土地利用演变对生态系统服务的影响。结果表明: 1980—2020年间,研究区土地利用格局较为稳定,以高寒草地和荒漠为主。生境质量整体提高,碳储量和产水量先升高后降低。3种服务整体呈现从西北向东南逐渐提升的空间格局,与土地利用由荒漠、草地到林地过渡的空间格局相对应。土地利用强度与生态系统服务的相关性呈现明显的空间分异特征,受土地利用强度影响较大的县域主要集中在青藏高原中西部、南部和中东部等区域。本研究结果对制定土地利用政策、调控青藏高原独特的高寒生态系统土地利用格局具有一定的指导意义。

关键词: 土地利用类型, 土地利用强度, InVEST模型, 生态系统服务, 青藏高原

Abstract: The Qinghai-Tibet Plateau is the key and largest ecological hotspot globally with enormous multiple ecosystem services. The vast and unique alpine ecosystems in this area have been subjected to the increased human disturbances, such as intensified land use. To explore the magnitude, spatiotemporal pattern and transformation process of land use in the Qinghai-Tibet Plateau and their impacts on the major ecosystem services during 1980-2020, we used the Integrated Valuation of Ecosystem Services and Trade-offs model to simulate the spatiotemporal variations of three types of ecosystem services, including habitat quality, carbon storage, and water yield. We analyzed the impacts of land use change on ecosystem services. The findings revealed that land use pattern remained generally stable from 1980 to 2020, with alpine grassland and desert as the dominant land use types. Habitat quality had generally enhanced, while carbon storage and water yield increased firstly and then declined. The magnitudes of three services gradually increased from the northwest to the southeast, corresponding to the spatial transformation pattern from desert via grassland to forest. The correlation between land use intensity and ecosystem services showed significant spatial heterogeneity, particulaly in counties greatly affected by land use intensity which concentrated predominantly in the mid-west, southern, and mid-east regions of the Qinghai-Tibet Plateau. The results have certain guiding significance for formulating land use policy and regulating land use pattern of alpine ecosystems in the Qinghai-Tibet Plateau.

Key words: land use type, land use intensity, InVEST model, ecosystem service, Qinghai-Tibet Plateau