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林草资源研究 ›› 2025›› Issue (2): 56-67.doi: 10.13466/j.cnki.lczyyj.2025.02.006

• 科学研究 • 上一篇    下一篇

西藏自然保护区草地植被生物量碳储量特征

吴建国1,2(), 王思雨1,2, 刘伟玮2,3, 段敏3, 贺凯3, 格茸都吉3, 旦增卓嘎3   

  1. 1.生态环境部区域生态过程与功能评估重点实验室,北京 100012
    2.中国环境科学研究院生态研究所,北京 100012
    3.西藏自治区生态环境科学研究院,拉萨 850000
  • 收稿日期:2024-10-26 修回日期:2025-03-10 出版日期:2025-04-28 发布日期:2025-12-04
  • 作者简介:吴建国,研究员,主要从事生态系统碳氮循环与气候变化影响及适应研究。Email:wujg@craes.org.cn
  • 基金资助:
    西藏自治区重点研发计划项目“气候变化对西藏生物多样性影响、风险与适应技术对策研究”(XZ202501ZY0119);国家重点研发计划项目“气候变化对生物多样性风险及适应评估”(2022YFF0802304);生态环境部工作经费项目“全国生态环境调查与评估”(80012024014002);西藏自治区财政项目“西藏自治区重要生态屏障区适应气候变化与巩固提升碳汇功能协同增效对策研究”(52072024008)

Characteristics of grassland biomass carbon density and carbon storage in nature reserve in Xizang

WU Jianguo1,2(), WANG Siyu1,2, LIU Weiwei2,3, DUAN Min3, HE kai3, GERONG Duoji3, DANZEN Zhuoga3   

  1. 1. Key Laboratory of Ecological Process and Function Assessment in Regional Ecosystem,Ministry of Ecology and Environment,Beijing 100012,China
    2. Institute of Ecology,Chinese Research Academy of Environmental Sciences,Beijing 100012,China
    3. Xizang Academy of Ecological and Environmental Sciences,Lhasa 850000,China
  • Received:2024-10-26 Revised:2025-03-10 Online:2025-04-28 Published:2025-12-04

摘要: 系统分析自然保护区植被生物量单位面积碳储量与总碳储量特征,对科学认识自然保护区对生态系统碳汇功能影响有重要意义。基于2018年公布的西藏草地资源调查数据和2024年自然保护区调查数据,采用联合国政府间气候变化专门委员会草地植被生物量单位面积碳储量与总碳储量核算方法,分析西藏土地和草地分布面积均较大的21个自然保护区(含17种草地类型)的草地植被生物量单位面积碳储量与总碳储量特征。结果表明:1)西藏21个自然保护区的草地植被地上、地下和总生物量单位面积碳储量分别为0.062~0.130 t/hm2、0.430~4.110 t/hm2和0.460~4.580 t/hm2,地上和地下生物量单位面积碳储量最高的为班公错湿地自然保护区的沼泽(地上和地下分别为1.38 t/hm2和21.64 t/hm2);单位面积植被碳储量最高的为班公错湿地自然保护区的高寒草原(0.27 t/hm2)。2)西藏21个自然保护区的草地植被地上、地下和总生物量碳储量范围分别为0.000 60×105~16.159 18×105t、0.005 19×105~110.992 73×105t和0.005 79×105~127.151 90×105t,其中,植被地上生物量总碳储量最高的为羌塘国家级自然保护区的高寒草原(7.152 88×105t)和高寒草甸(6.650 52×105t);地下生物量总碳储量最高的为羌塘国家级自然保护区的高寒草原(30.399 76×105t)和高寒草甸(61.982 86×105t);总生物量碳储量最高的为羌塘国家级自然保护区的高寒草原(37.552 64×105t)和高寒草甸(68.633 38×105t)。西藏自然保护区草地植被具有重要的碳汇功能,需要对这些植被生物量碳库加强保护。

关键词: 自然保护区, 植被, 碳储量, 西藏

Abstract:

Investigating the vegetation biomass carbon density and storage characteristics in nature reserves is important for scientific understanding of the impacts of nature reserves on ecosystem carbon sink function.The 21 nature reserves with large land and grassland distribution area in Xizang were selected.Based on the survey data of grassland resources in Xizang published in 2018 and the survey of typical protected areas in 2024,the calculation method of grassland biomass carbon density and storage of the United Nations Intergovernmental Panel on Climate Change was adopted,the carbon density and storage characteristics of vegetation biomass of 17 grassland types in 21 nature reserves were analyzed.The results showed that the aboveground,underground and total biomass carbon densities of grassland vegetation in 21 nature reserves in Xizang were 0.062-0.130,0.430-4.110 and 0.460-4.580 t/hm2,respectively.The highest carbon density of aboveground and underground biomass was found in the bog of Bangongcuo Wetland Nature Reserve(1.38 t/hm2 for aboveground,21.64 t/hm2 for underground).The highest biomass carbon density was found in the alpine grassland of Bangongcuo Wetland Nature Reserve(0.27 t/hm2).In addition,the aboveground,underground and total biomass carbon reserves of grassland vegetation in 21 nature reserves in Xizang were 0.000 60×105-16.159 18×105,0.005 19×105-110.992 73×105,and 0.005 79×105-127.151 90×105 t,respectively.The aboveground biomass carbon storage of vegetation was the highest in alpine grassland(7.152 88×105t) and alpine meadow(6.650 52×105 t) in Qiangtang National Nature Reserve.The underground biomass carbon storage was the largest in the alpine grassland(30.399 76×105t) and alpine meadow(61.982 86×105 t) of Qiangtang National Nature Reserve.The highest biomass carbon storage was found in alpine grassland(37.552 64×105 t) and alpine meadow(68.633 38×105 t) in Qiangtang National Nature Reserve.The results show that grassland vegetation in Xizang Nature Reserve has an important carbon sink function,and it is necessary to strengthen the protection of vegetation carbon pool in these reserves.

Key words: nature reserve, vegetation, carbon storage, Xizang

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