地质通报2024，Vol.43Issue(2)：451-462,12.DOI:10.12097/gbc.2022.07.023
近30年西北内陆荒漠资源大区土地利用驱动下生态系统碳储量时空变化
Spatial-temporal variation of ecosystem carbon storage driven by land use in northwest inland desert resource region in recent 30 years
摘要
Abstract
Based on remote sensing images,elevation models,vegetation and meteorological data from 1990 to 2020,the comprehensive regionalization of natural resources in northwest inland desert resource region was obtained by means of regionalization analysis combining quantitative calculation and qualitative analysis.According to the climate factors in the northwest inland desert resource region,the carbon density of different land types under the national level was revised to obtain the carbon density data of the western arid region.Based on the Integrated Valuation of Ecosystem Services and Tradeoffs(InVEST)model,we analyzed the effects of land use change on carbon stocks from 1990 to 2020.The results showed that:①In recent 30 years,the grassland in this study area was mainly degraded,and the grassland was mainly transformed into cultivated land and desert,and the land use type changed significantly from 2010 to 2020.②The spatial distribution of carbon storage in the study area is more in the west and less in the east.The grassland in Altai and Tacheng basin temperate grassland subregion and Yili Basin temperate grassland subregion are rich,so the carbon storage content is high.③From 1990 to 2020,the carbon storage in the northwest inland desert resource region showed a decreasing trend.The conversion of land use type resulted a net reduction of carbon storage of 1.86×108 tons.In 2000 and 2020,a large amount of grassland in the study area was transformed into desert,which significantly reduced soil carbon storage and carbon sequestration potential.This study evaluated the temporal and spatial changes of ecosystem carbon storage by land use in the northwest inland desert resource region,which is helpful to judge the transformation trend of ecosystem function and provide reference for ecosystem regulation and promoting low-carbon sustainable development in this region.关键词
土地利用变化/生态系统碳储量/InVEST模型/西北地区Key words
land use change/ecosystem carbon storage/InVEST model/Northwest China分类
资源环境引用本文复制引用
付宇佳,刘晓煌,孙兴丽,刘玖芬,郑艺文,张子凡,赖明,熊茂秋..近30年西北内陆荒漠资源大区土地利用驱动下生态系统碳储量时空变化[J].地质通报,2024,43(2):451-462,12.基金项目
中国地质调查局项目《塔里木河流域巴州北部沙漠盐渍化与生态恢复调查监测与评价》(编号:ZD20220144)、《新疆典型生态系统综合全参数观测建设》(编号:2021xjkk140104) （编号:ZD20220144）
