摘要
为给大兴安岭天保工程区生态系统保护和土地利用规划提供科学依据,以大兴安岭天保工程区为研究区,基于研究区2000—2020年土地利用数据和各地类碳密度数据,运用InVEST模型碳储量模块对大兴安岭天保工程区2000—2020年生态系统的碳储量进行估算,并通过土地利用转移矩阵分析土地利用类型之间的相互转化对碳储量的影响。结果显示:(1)研究区2000、2005、2010、2015、2020年碳储量分别为569.87×10^(7)、573.22×10^(7)、573.69×10^(7)、572.42×10^(7)、573.14×10^(7) t,呈增加趋势,累计增加3.27×10^(7) t;(2)碳储量较高的地区主要分布在北部和中部,较低的区域主要分布西部、南部、东南角和东部小区域;(3)林地是研究区最重要的碳库,其碳储量占研究区固碳总量的93.31%,林地和耕地面积的增加是大兴安岭天保工程区碳储量增加的主要原因。研究结果表明:天保工程促使大兴安岭林地面积保持稳定并且呈现出一定增长趋势,提高了大兴安岭的整体固碳能力。在未来,大兴安岭应当继续实施和巩固天然林保护工程,继续坚持退耕还林还草政策,通过合理的行政规划,调控草地和耕地向建设性用地转换;此外,通过人工种植、草畜平衡的政策,围栏封育和优化种苗的方式来缓解草地退化,修复草地生态系统;而耕地则通过间作套作、改良品种、合理使用肥料等方法提高产量。
To provide scientific basis for ecosystem protection and land use planning in the Natural Forest Protection Project(NFPP)regions of the Greater Khingan Mountains,based on the land use data from 2000 to 2020 and carbon density data of various regions,the carbon storage module of InVEs T model was used to estimate the ecosystem carbon storage in the NFPP regions of the Greater Khingan Mountains during 2000-2020.The impact of mutual conversion between land use types on carbon storage was analyzed by land use transfer matrix.The results showed that:(1)The carbon storages in 2000,2005,2010,2015 and 2020 were 569.87×10^(7),573.22×10^(7),573.69×10^(7),572.42×10^(7) and 573.14×10^(7) t,respectively,showing an increasing trend with a cumulative increase of 3.27×10^(7) t;(2)The regions with higher carbon storages were mainly distributed in the north and middle of the study area,while the lower regions were mainly distributed in the west,south,southeast corner and the east of the study area.(3)Forest land was the most important carbon pool in the study area,and its carbon storage accounting for 93.31%of the total carbon sequestration in the study area.The increase in forest land and cultivated land area was the main reason for the increase in carbon storage in the NFPP regions of the Greater Khingan Mountains.The NFPP has promoted the stability and growth of forest land in the Greater Khingan Mountains,improving the overall carbon sequestration capacity of the region.In the future,the Greater Khingan Mountains should continue to implement and consolidate the NFPP,adhere to the policy of Grain for Green Project,and regulate the conversion of grasslands and cultivated lands to constructive land through reasonable administrative planning.In addition,alleviate grassland degradation and restore grassland ecosystems through policies of artificial planting,grass and animal balance,fencing,and optimizing seedlings;On the other hand,cultivated land can increase yield through methods such as intercropping,improving varieties,and rational use of fertilizers.
作者
张宇飞
王子昊
王冰
张秋良
ZHANG Yufei;WANG Zihao;WANG Bing;ZHANG Qiuliang(Forestry College,Inner Mongolia Agricultural University,Hohhot Inner Mongolia 010019,P.R.China;Forest Ecosystem National Observation and Research Station of Daxing’anling,Genhe Inner Mongolia 022350,P.R.China)
出处
《西部林业科学》
CAS
北大核心
2024年第1期108-118,共11页
Journal of West China Forestry Science
基金
内蒙古自治区重点研发计划项目(2023YFDZ0026)
内蒙古自治区科研基础平台项目(2023KYPT0001)
国家自然科学基金(32260389)
内蒙古农业大学高层次/优秀博士人才引进科研启动项目(NDYB2021-8)资助。
关键词
大兴安岭
天然林保护工程
InVEST模型
碳储量
时空变化
Greater Khingan Mountains
Natural Forest Protection Project
InVEs T model
carbon storage
spatiotemporal variation
作者简介
第一作者:张宇飞(1997-),男,硕士研究生,主要从事“3S”技术应用与资源监测评价研究。E-mail:zyf18147177751@163.com;通信作者:王冰(1981-),女,教授,博士,主要从事林业遥感研究。E-mail:wbingbing2008@126.com。
