干旱区研究 ›› 2023, Vol. 40 ›› Issue (2): 203-212.doi: 10.13866/j.azr.2023.02.05 cstr: 32277.14.j.azr.2023.02.05

• 水土资源 • 上一篇    下一篇

基于情景模拟的流域低碳土地利用格局优化研究——以汾河流域为例

张恩月1(),郑君焱2,苏迎庆3,张蕾4,张鹏飞1,刘庚1()   

  1. 1.太原师范学院地理科学学院,山西 晋中 030619
    2.中晋环境科技有限公司,山西 太原 030000
    3.西北师范大学地理与环境科学学院,甘肃 兰州 730070
    4.太原师范学院经济与管理学院,山西 晋中 030619
  • 收稿日期:2022-07-11 修回日期:2022-11-21 出版日期:2023-02-15 发布日期:2023-03-08
  • 通讯作者: 刘庚. E-mail:liugeng9696@126.com
  • 作者简介:张恩月(1998-),女,硕士研究生,主要从事土地资源评价与开发等研究. E-mail: zsyyy0521@126.com
  • 基金资助:
    山西省高等学校优秀成果(科学技术)培育项目(2020KJ024);山西省高等学校科技创新项目(2021L411);教育部人文社科规划基金项目(19YJAZH066);山西省人文社科重点研究基地项目(20200133);太原师范学院研究生教育创新项目(SYYJSYC2222)

Optimization of low-carbon land use pattern based on scenario simulation: A case study of Fenhe River Basin

ZHANG Enyue1(),ZHENG Junyan2,SU Yingqing3,ZHANG Lei4,ZHANG Pengfei1,LIU Geng1()   

  1. 1. College of Geography Science, Taiyuan Normal University, Jinzhong 030619, Shanxi, China
    2. Zhongjin Environmental Technology Co., Ltd, Taiyuan 030000, Shanxi, China
    3. College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, Gansu, China
    4. School of Economics and Management, Taiyuan Normal University, Jinzhong 030619, Shanxi, China
  • Received:2022-07-11 Revised:2022-11-21 Published:2023-02-15 Online:2023-03-08

摘要:

开展土地利用优化配置,旨在促进区域土地资源科学利用及实现碳减排目标。本文以汾河流域为研究区,基于2015年、2020年土地利用及阻力因子数据,采用FLUS-MCR模型、碳收支系数法,验证模型精度下,设置2030年低碳发展优先、经济发展优先、耕地保护优先、生态保护优先及自然发展5种模拟情景,对比未来不同情景下土地利用类型的布局特征,并提出优化布局方案。结果表明:(1) 2020年汾河流域禁止、限制、重点及优化开发区4类土地利用功能分区面积分别为:2491.76 km2、6445.99 km2、16325 km2、14477 km2;流域净碳排放量为2002.46×104 t,禁止开发区为流域碳汇区,碳吸收总量为0.76×104 t,其余三区为碳源区,碳排放总量为2003.22×104 t。(2) 2030年各情景土地利用碳收支情况由高到低为:低碳发展优先、生态保护优先、耕地保护优先、自然发展、经济发展优先。(3) 2030年,不同情景下除禁止开发区用地结构相对合理,限制开发区仍需适当压缩该区耕地及建设用地比例;重点及优化开发区应考虑适当开发宜耕草地,促进流域土地利用生产、生活、生态功能协调发展,实现低碳土地利用目标。

关键词: 低碳土地利用, 优化配置, FLUS-MCR模型, 碳收支系数, 汾河流域, 山西

Abstract:

Carrying out the optimal allocation of land use is aimed at promoting the scientific use of regional land resources and achieving carbon emission reduction targets. In this paper, the Fenhe River Basin is taken as the research area. Based on the data on land use and resistance factors in 2015 and 2020, the FLUS-MCR model and the carbon budget coefficient method are used to verify the accuracy of the model. Five simulation scenarios, such as low-carbon development priority, economic development priority, cultivated land protection priority, ecological protection priority, and natural development in 2030, are set up to compare the layout characteristics of land use types under different scenarios in the future, and an optimized layout scheme is proposed. The results showed that: (1) In 2020, the areas of four land use functional zoning of the prohibited, restricted, key, and optimized development zones in Fenhe River Basin were 2491.76 km2, 6445.99 km2, 16325 km2, and 14477 km2, respectively. The net carbon emission of the basin is 2002.46 × 104 t. The prohibited development zone is the carbon sink area of the basin, and the total carbon absorption is 0.76×104 t. The remaining three areas are carbon source areas, and the total carbon emission is 2003.22 × 104 t. (2) In 2030, the carbon balance of land use in each scenario from high to low is low-carbon development priority, ecological protection priority, cultivated land protection priority, natural development priority, and economic development priority. (3) In 2030, under different scenarios, in addition to the relatively reasonable land use structure of the prohibited development zone, the restricted development zone still needs to appropriately reduce the proportion of cultivated land and construction land in the area. To support the coordinated development of land use, production, living conditions, and ecological functions and to accomplish low-carbon land use goals, the key and optimal development zones should take arable grassland development into consideration.

Key words: low-carbon land use, optimize configuration, FLUS-MCR model, carbon budget coefficient, Fenhe River Basin, Shanxi