水土保持通报2024，Vol.44Issue(1)：443-452,10.DOI:10.13961/j.cnki.stbctb.2024.01.043
黔中城市群碳储量对土地利用/覆被变化的响应及脆弱性
Response of Carbon Storage to Land Use/Cover Changes and Vulnerability for Central Guizhou Urban Agglomeration
摘要
Abstract
[Objective]The impacts of land use/cover changes on carbon storage and ecosystem vulnerability in regional ecosystems were determined in order to provide a reference for regional green low-carbon and sustainable development of ecosystems.[Methods]The ecosystem carbon storage and its spatial distribution pattern were quantitatively analyzed by using land use/cover data for the core economic zone of the Central Guizhou urban agglomeration in 2000,2010,and 2020 with the InVEST model and a land use transfer matrix.A potential impact index(PI)was used to assess the vulnerability of regional ecosystem services.[Results]① Land use/cover changes in the core economic zone of the Central Guizhou urban agglomeration showed that cultivated land and forest land continued to decline from 2000 to 2020,and construction land continued to increase.Land use/cover changes in the study area were mainly manifested as the transfer of cultivated land,forest land,and grassland to other land use types,among which 3 339.35 and 3 669.15 km2 of land were transferred from 2000 to 2010 and 2010 to 2020,respectively.The conversion of forest land to grassland was the main transfer type during the first period,and the conversion of arable land to construction land was the main transfer type in the second period.② Regional carbon storage decreased from 2000 to 2020(from 4.42 × 107 to 4.33 × 107 t),with a cumulative decrease of 9.40×105 t.The conversion of forest land to grassland was the main reason for the reduction in carbon storage.The carbon storage density in each year was higher in the west and east,and lower in the middle portion of the study area.There was no significant change in the high density area during the past 20 years,while the low density area spreading from the central area to the periphery.③ The core economic zone of the Central Guizhou urban agglomeration was the main source of carbon from 2000 to 2020,with the land use degree index increasing by 2.83,and PI index being-0.04 and-0.31,respectively,showing negative potential impact and increasing vulnerability.[Conclusion]Increasing forest land,controlling forest land conversion to other uses,and expanding construction land are important means for promoting regional green,low-carbon,stable,and sustainable development of ecosystems.关键词
InVEST模型/土地利用/覆被变化/碳储量/脆弱性/黔中城市群Key words
In VEST model/land use/cover change/carbon storage/vulnerability/Central Guizhou urban agglomeration分类
环境科学引用本文复制引用
万海峰,蒙友波,陈洋,赵祖伦,罗洁琼,张朝睿..黔中城市群碳储量对土地利用/覆被变化的响应及脆弱性[J].水土保持通报,2024,44(1):443-452,10.基金项目
国家自然科学基金项目"可持续发展视角下沿海城市人居环境时空演变与影响因素研究"(42001239) （42001239）
贵州省科技计划项目"喀斯特山地城市空间扩展生态环境效应及优化模式研究"(黔科合基础-ZK[2022]一般277) （黔科合基础-ZK[2022]一般277）
