生态环境学报 ›› 2022, Vol. 31 ›› Issue (8): 1667-1679.DOI: 10.16258/j.cnki.1674-5906.2022.08.019

• 研究论文 • 上一篇    下一篇

基于FLUS-InVEST的西北地区土地利用变化及其对碳储量的影响——以呼包鄂榆城市群为例

王超越(), 郭先华, 郭莉, 白丽芳, 夏利林, 王春博, 李廷真*()   

  1. 重庆三峡学院三峡库区水环境演变与污染防治重庆市重点实验室,重庆 404100
  • 收稿日期:2022-02-20 出版日期:2022-08-18 发布日期:2022-10-10
  • 通讯作者: * 李廷真(1978年生),男,博士,教授,主要从事生态环境污染防治研究。E-mail: litingzhen@163.com
  • 作者简介:王超越(1997年生),男,硕士研究生,研究方向为国土空间与生态环境格局演变。E-mail: wangchaoyue0616@163.com
  • 基金资助:
    国家社会科学基金项目(21BMZ141);重庆市教育委员会人文社会科学研究规划项目(21SKGH432)

Land Use Change and Its Impact on Carbon Storage in Northwest China Based on FLUS-Invest: A Case Study of Hu-Bao-Er-Yu Urban Agglomeration

WANG Chaoyue(), GUO Xianhua, GUO Li, BAI Lifang, XIA Lilin, WANG Chunbo, LI Tingzhen*()   

  1. Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir Area, Chongqing Three Gorges University, Chongqing 404100, P. R. China
  • Received:2022-02-20 Online:2022-08-18 Published:2022-10-10

摘要:

基于“双碳”战略背景下,探究城市群土地利用覆被变化与生态系统碳储量时空变化之间的关系,以期为城市群区域碳平衡、国土空间规划和生态系统的可持续发展提供一定的借鉴。以呼包鄂榆城市群为例,选取多期土地利用数据并确定相关驱动因子,基于FLUS-InVEST模型,在明确该城市群2000—2020年土地利用覆被变化规律的基础上,分别模拟预测2030年呼包鄂榆城市群在自然发展和生态保护两种情景下土地利用空间格局,并评估两种情景下碳储量及其时空动态变化特征。结果表明:2000—2020年呼包鄂榆城市群林地、水域和建设用地面积持续增加,耕地、草地和未利用地的面积持续减少,20年间城市群碳储量呈减少趋势,总体减少8.416×106 t。与自然发展情景相比,生态保护情景下2030年草地、林地和水域面积得到了增长,耕地与未利用地持续减少,建设用地面积受到了限制,生态空间效应得到体现。2030年,自然发展情景与生态保护情景下的城市群碳储量较2020年分别减少77.065×106 t和68.031×106 t,生态保护情景下土地利用变化碳储量稳定性显著高于自然发展情景,因此,生态保护情景下的呼包鄂榆城市群土地利用能综合统筹各地类功能,减缓碳储量损失,对区域国土空间优化具有重要意义。

关键词: 碳储量, FLUS模型, InVEST模型, 土地利用, 城市群, 西北地区

Abstract:

Based on the “dual carbon” strategy, this study explored the relationship between land use/cover change and temporal and spatial changes of ecosystem carbon storage in urban agglomerations, to provide references for regional carbon balance, territorial space planning and sustainable development of ecosystem in urban agglomerations. Based on the FLUS-InVEST coupling model, the land use/cover change of Hu-Bao-Er-Yu urban agglomeration from 2000 to 2020 was simulated and used to predict the land use in 2030, based on the multi-period land use data and related driving factors. The spatial patterns of land use in Hu-Bao-Er-Yu urban agglomeration were analyzed under natural development and ecological protection scenarios, and the characteristics of carbon storage and its spatio-temporal dynamics were evaluated under the two scenarios. The results showed that the area of forest land, water area and construction land continued to increase from 2000 to 2020, while the area of cropland, grassland and unused land continued to decrease, and the carbon storage in the urban agglomeration had decreased by 8.416×106 t during these 20 years. Compared with the natural development scenario, the area of grassland, forest and water area in 2030 under the ecological protection scenario would increase, and the area of construction land would be restricted, and the ecological spatial effect would be reflected. In 2030, the carbon storage of urban agglomerations in 2030 under the natural development scenario and ecological protection scenario would decrease 77.065×106 t and 68.031×106 t, respectively, compared with that in 2020. The stability of carbon storage of land use change under the ecological protection scenario was significantly higher than that under the natural development scenario. Therefore, Under the ecological protection scenario, the land use of Hu-Bao-E-Yu urban agglomeration can comprehensively coordinate the functions of different regions and slow down the loss of carbon storage, and thus is of great significance to regional territorial space optimization.

Key words: carbon reserve, FLUS model, InVEST model, land use, urban agglomeration, northwest district

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