摘要
土地利用变化对城市生态系统中的碳平衡具有重大影响。该研究基于太原市2000-2020年土地利用变化规律,运用CAMarkov模型预测了2030年不同情景下土地利用空间格局,并利用InVEST模型评估了太原市2000-2030年7期碳储量。结果表明:(1)2000-2020年间太原市建设用地增加显著,增加了339.265 km^(2),林地面积增加了96.707 km^(2);水域、耕地、草地和未利用土地面积分别减少13.333、275.037、146.073和1.223 km^(2)。(2)2000-2020年,太原市碳储量减少2312591.65 t。(3)与自然发展情景不同,生态保护情景下,2030年林地较2020年略有增加,建设用地得到有效限扩,产生了生态效应;2030年,生态保护情景下碳储量较于自然发展情景下多1760959.397 t。从土地利用变化来看,林地增加是区域碳储量增加的主要原因,生态保护情景下固碳能力提升。该研究可为太原市土地利用结构调整及管理提供科学依据。
Land use change has a significant impact on the carbon balance in urban ecosystems.Based on the law of land use change in Taiyuan City from 2000 to 2020,this study uses the CA-Markov model to predict the spatial pattern of land use in different scenarios in 2030,and uses the InVEST model to evaluate the carbon storage of Taiyuan City from 2000 to 2030.The results show that from 2000 to 2020,the construction land increased significantly,an increase of 339.265 km^(2),and the area of forest land increased by 96.707 km^(2);the area of water,cultivated land,grassland and unused land decreased by 13.333 km^(2),275.037 km^(2),146.073 km^(2) and 1.223 km^(2),respectively.From 2000 to 2020,the carbon storage in Taiyuan has decreased by 2312591.65 t.Different from the natural development scenario,under the ecological protection scenario,the forest land will increase slightly in 2030 compared with 2020,and the construction land will be effectively limited and expanded,both of which facilitated the generation of ecological effects under the ecological protection scenario.In 2030,the carbon storage under the ecological protection scenario is 1760959.397 t more than that under the natural development scenario.From the perspec⁃tive of land use changes,the increase in forest area is the main reason for the increase in carbon storage in the study area,and the carbon sequestration capacity is enhanced under the ecological protection scenario.This study will provide a scientific basis for land use structure adjustment and management in Taiyuan.
作者
王犇
甄志磊
席茹阳
陈小平
乔琼
WANG Ben;ZHEN Zhilei;XI Ruyang;CHEN Xiaoping;QIAO Qiong(College of Urban and Rural Construction,Shanxi Agricultural University,Jinzhong 030801,China;School of Horticulture(Institute of Horticulture),Shanxi Agricultural University,Jinzhong 030801,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2023年第10期219-227,共9页
Environmental Science & Technology
基金
山西省高等学校自主创新项目(2020L0152)
山西农业大学科技创新基金项目(2020QC22)
山西省研究生实践创新项目(2023SJ125)
山西省高等学校教学改革创新项目(J20230363)。
