基于LUCC黄河流域中游碳储量及脆弱性研究  

Study on Carbon Stocks and Vulnerability in the Middle Reach of the Yellow River Basin Based on LUCC

作　　者：张艳[1,2] 谢佳楠 崔国屹 ZHANG Yan;XIE Jianan;CUI Guoyi(School of Land Engineering,Chang’an University,Xi’an 710054,China;Shanxi Provincial Key Laboratory of Land Improvement,Xi’an 710054,China;Shanxi Land Construction Engineering Technology Research Institute Co.,Ltd.,Xi’an 710021,China;Shanxi Land Engineering Construction Group Co.,Ltd.,Xi’an 710048,China)

机构地区：[1]长安大学土地工程学院,陕西西安710054 [2]陕西省土地整治重点实验室,陕西西安710054 [3]陕西地建土地工程技术研究院有限责任公司,陕西西安710021 [4]陕西省土地工程建设集团有限责任公司,陕西西安710048

出　　处：《环境科学与技术》2025年第4期199-208,共10页Environmental Science & Technology

基　　金：陕西省重大科技项目(2022ZDLSF07-05);国家自然科学基金项目(42371210)。

摘　　要：研究土地利用变化及其对陆地生态系统碳储量的影响,对区域未来土地资源合理利用以及经济与生态协调发展具有重要意义。该文基于黄河流域中游2000、2010、2020年土地利用/覆被数据,借助InVEST模型评估碳储量的分布格局及时空演变特征,分析土地利用变化对碳储量的影响,利用潜在影响指数(PI)探究区域生态系统碳储量服务的脆弱性。结果表明:(1)2000-2020年间黄河流域中游以耕地、草地分布最为广泛;草地、林地和建设用地面积增加,耕地转入草地居多,约15965.77 km^(2)。(2)2000-2020年黄河流域中游碳储量分布呈现西北低、东南高的空间分布特征;总碳储量呈现逐渐减少且变化复杂化的趋势,年均减少2.96×10^(6) t。(3)2000-2020年黄河流域中游林地、草地、耕地为碳储量高值区;耕地总碳储量逐渐减少,建设用地逐渐增加;耕地碳储量亏损最严重,林地盈余最多。(4)2000-2020年黄河流域中游土地利用程度指数提高0.91,PI指数分别为6×10^(7)、-4×10^(7),2010-2020年表现负面潜在影响,脆弱性增强。研究结果可为黄河流域中游土地利用合理规划和可持续发展提供数据支撑。The study of land use change and its subsequent influence on terrestrial ecosystem carbon storage represents a matter of paramount importance for the rational utilization of regional land resources and the coordinated development of economy and ecology.Based on the land use/cover data of the middle reaches of the Yellow River Basin in 2000,2010 and 2020,we assessed the distribution pattern and spatial and temporal evolution characteristics of carbon stocks with the help of the InVEST model,analyzed the impacts of land use changes on carbon stocks,and explored the vulnerability of regional ecosystems’carbon stock services by using the potential impact index(PI).The results showed that during the period of 2000-2020,the middle reaches of the Yellow River Basin were most widely distributed by cropland,grassland of the total area;the area of grassland,forest land and construction land increased,and most of the cropland was converted to grassland,which was about 15965.77 km^(2).During the period of 2000-2020,the distribution pattern of carbon storage within the middle reaches of the Yellow River Basin exhibited a notable gradient,characterized by“low in the northwest and high in the southeast”.The total carbon stock shows a trend of gradual decrease and complicated change,with an average annual decrease of 2.96×10^(6) t.Forest land,grassland and cropland in the middle reaches of the Yellow River Basin from 2000 to 2020 are the areas of high carbon stock;the total carbon stock of cropland gradually decreases,and that of construction land gradually increases;cropland shows the most serious carbon stock deficit,and woodland shows the most surplus.From 2000 to 2020,the land use degree index of the middle reaches of the Yellow River Basin increased by 0.91,and the PI indexes were 6×10^(7) and-4×10^(7),respectively,and showed negative potential impacts and increased vulnerability from 2010 to 2020.The results of the study can provide data support for rational planning and sustainable development of land use in the

关 键 词：土地利用/覆被变化 碳储量 脆弱性 InVEST模型 黄河流域中游 

分 类 号：X321[环境科学与工程—环境工程]