基于土地利用变化的黄河上游四川段生态系统服务价值评价
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作者单位:

1.北京林业大学水土保持学院;2.水土保持与荒漠化防治教育部重点实验室

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中图分类号:

F301;Q148

基金项目:

中国工程院战略研究与咨询项目(2022-DFZD-26-03);国家自然科学基金项目(U2243202),


Ecosystem service functions in the upper reaches of the Yellow River in Sichuan based on land use change value evaluation
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1.College of Soil and Water Conservation,Beijing Forestry University;2.Key Laboratory of Soil Water Conservation and Desertification Control,Ministry of Education

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    摘要:

    通过定量研究20年间黄河上游四川段土地利用变化与生态系统服务价值的关系,评估该流域段生态综合治理效果,为健全民族区域空间规划、生态环境保护与管理提供依据,助力黄河流域高质量发展。利用黄河上游四川段2000年、2010年和2020年土地利用数据,基于土地利用动态度、土地利用矩阵分析土地利用变化,并参考中国陆地生态系统单位面积生态系统服务价值当量,对黄河上游四川段生态系统服务价值当量的经济价值进行修正,定量研究黄河上游四川段2000—2020年间土地利用变化对生态系统服务价值的影响。结果表明:(1)2000—2020年黄河上游四川段林地、荒漠、湿地和水系土地利用面积呈上升趋势,耕地、灌木、草地和冰川积雪呈下降趋势,2010—2020年土地利用变化比2000—2010年更显著;(2)黄河上游四川段2000年、2010年和2020年生态系统服务价值分别为1.27×1010元、2.51×1010和3.92×1010,呈上升趋势,敏感性分析表明分析结果可靠。各土地利用类型中,对生态系统总价值贡献最为显著的地类是草地,2000—2010年和2010—2020年草地生态服务贡献率分别为93.9%和72.9%,其次是湿地和林地;(3)研究区在20年间各单项生态系统服务价值均呈增加趋势,区域生态服务功能的分项价值大小均为调节服务>支持服务>供给服务>文化服务,11个单项功能中起显著服务价值的为气候调节、水文调节、土壤保持和生物多样性,四项之和占总价值比例均超过58.5%。黄河上游四川段土地利用变化会影响区域生态系统服务价值的变化,其中草地影响最显著,其次是湿地和林地。研究表明20年间生态治理成果逐渐增强,生态环境不断变好。

    Abstract:

    Through the quantitative study of the relationship between land use change and ecosystem service value in the upper reaches of the Yellow River in the past 20 years, the comprehensive ecological management effect of the upper reaches of the Yellow River was evaluated, which provided a basis for improving the spatial planning, ecological environmental protection and management of ethnic regions, and promoted the high-quality development of the Yellow River Basin. Using the land use data of the Sichuan section of the upper reaches of the Yellow River in 2000, 2010 and 2020, the land use changes were analyzed based on the land use dynamics and land use matrix, and the economic value of the ecosystem service value equivalent in the Sichuan section of the upper reaches of the Yellow River was revised with reference to the equivalent ecosystem service value per unit area of the terrestrial ecosystem in China, and the impact of land use change on the ecosystem service value in the Sichuan section of the upper reaches of the Yellow River from 2000 to 2020 was quantitatively studied. The results show that: (1) From 2000 to 2020, the land use area of forestland, desert, wetland and water system in the upper reaches of the Yellow River in Sichuan showed an upward trend, while arable land, shrubs, grassland and glacial snow cover showed a downward trend, and the land use change in 2010-2020 was more significant than that in 2000-2010. (2) In 2000, 2010 and 2020, the value of ecosystem services in the Sichuan section of the upper reaches of the Yellow River was 1.27×1010 yuan, 2.51×1010 yuan and 3.92×1010 yuan, respectively, showing an upward trend, and sensitivity analysis showed that the analysis results were reliable. Among the land use types, grassland was the land with the most significant contribution to the total ecosystem value, with grassland ecological service contribution rates of 93.9% and 72.9% in 2000-2010 and 2010-2020, respectively, followed by wetland and forestland. (3) In the study area, the value of each individual ecosystem service showed an increasing trend in 20 years, and the sub-values of regional ecological service functions were all regulation services> support services> supply services > cultural services, and climate regulation, hydrological regulation, soil conservation and biodiversity were the most significant service values among the 11 individual functions, and the sum of the four accounted for more than 58.5% of the total value. Land use change in the upper reaches of the Yellow River in Sichuan will affect the change of regional ecosystem service value, with grassland having the most significant impact, followed by wetlands and forest lands. The results of ecological governance have gradually increased in the past 20 years, and the ecological environment has continuously improved.

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  • 收稿日期:2023-08-25
  • 最后修改日期:2023-10-16
  • 录用日期:2023-10-18
  • 在线发布日期: 2024-02-05
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