基于InVEST模型的毕节市生态系统碳储量时空变化分析  

Analysis of Temporal and Spatial Change of Ecosystem Carbon Storage in Bijie City Based on InVEST Model

作　　者：董奎 董平 单绍朋 DONG Kui;DONG Ping;SHAN Shao-peng(Guizhou Bijie Natural Forest Resources Protection Center,Bijie,Guizhou 551700;Sichuan Shanhaitu Agriculture and Forestry Technology Co.,Ltd.,Chengdu,Sichuan 610081;Guizhou Bijie Forestry Science Research Institute,Bijie,Guizhou 551700)

机构地区：[1]贵州省毕节市天然林资源保护中心,贵州毕节551700 [2]四川山海图农林科技有限公司,四川成都610081 [3]贵州省毕节市林业科学研究所,贵州毕节551700

出　　处：《安徽农业科学》2024年第7期72-77,共6页Journal of Anhui Agricultural Sciences

摘　　要：利用毕节试验区1990、2000、2010、2020年4期土地利用类型数据,研究30年来试验区不同土地利用类型变化情况,并采用InVEST模型估测试验区不同生态系统碳储量,分析试验区在生态建设取得明显成效背景下生态系统碳储量时空变化。结果表明,1990—2020年毕节市土地利用类型发生明显变化,林地和建设用地面积增加,耕地、草地面积减少,耕地主要转为林地、草地、建设用地,草地主要转为耕地和林地。1990—2020年毕节市生态系统总碳储量在51.21×10^(7)~52.37×10^(7) t,总体呈增加趋势,碳储量总量增加1.16×10^(7) t,年均增加0.04×10^(7) t。毕节市碳储量呈现出西高东低的空间分布趋势,1990—2020年林地和建设用地碳储量增加,耕地和草地碳储量减少。Using land use type data from four periods of 1990,2000,2010 and 2020 in the Bijie experimental area,the changes of different land use types in the experimental area over the past 30 years were studied.The InVEST model was used to estimate the carbon storage of different ecosystems in the experimental area,and the temporal and spatial changes of ecosystem carbon storage under the background of significant success in ecological construction were analyzed.The results showed that from 1990 to 2020,there were significant changes in land use types in the Bijie City,with an increase in the area of forest land and construction land,a decrease in the area of cultivated land and grassland,and the main conversion of cultivated land to forest land,grassland and construction land,while the main conversion of grassland to cultivated land and forest land.The total carbon storage of the ecosystem in Bijie City from 1990 to 2020 was 51.21×10^(7)-52.37×10^(7) t,the total carbon storage increased by 1.16×10^(7) t,with an average annual increase of 0.04×10^(7) t.The carbon storage in Bijie City showed a spatial distribution trend of high in the west and low in the east.From 1990 to 2020,the carbon storage of forest land and construction land increased,while the carbon storage of cultivated land and grassland decreased.

关 键 词：土地利用类型 InVEST模型 碳储量 生态系统 时空变化 

分 类 号：X171.1[环境科学与工程—环境科学]