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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F301;Q148

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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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    摘要:

    [目的] 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。[方法] 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] (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1.27×1010,2.51×1010,3.92×1010元,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93.90%和72.90%,其次为湿地和林地;(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,4项之和占总价值比例超过69.50%。黄河上游四川段土地利用变化影响区域生态系统服务价值的变化,其中草地影响最显著,其次为湿地和林地。[结论] 研究结果表明20年间生态治理成果逐渐增强,生态环境不断变好。

    Abstract:

    [Objective] To quantitatively study the relationship between land use change and ecosystem service value in Sichuan section of the upper reaches of the Yellow River in the past 20 years, and to evaluate the effect of comprehensive ecological management in this section, so as to provided a basis for improving ethnic regional spatial planning, ecological environmental protection and management, and promoted the high-quality development of the Yellow River Basin. [Methods] Using the land use data of the upper reaches of the Yellow River in Sichuan in 2000, 2010 and 2020, land use change was analyzed based on land use dynamic attitude and land use matrix, and the economic value of the ecosystem service value equivalent per unit area of the terrestrial ecosystem in China was revised. The effects of land use change on the ecosystem service value in the upper reaches of the Yellow River from 2000 to 2020 in Sichuan were quantitatively studied. [Results] (1) From 2000 to 2020, the land use area of forest, desert, wetland and water system in the upper reaches of the Yellow River in Sichuan showed an increasing trend, while the land use area of cultivated land, shrub, grassland and glacial and snow in the upper reaches of the Yellow River showed a decreasing trend, and the land use change in 2010—2020 was more significant than that in 2000—2010. (2) The ecosystem service value of the upper reaches of the Yellow River in Sichuan in 2000, 2010 and 2020, was 1.27×1010, 2.51×1010, 3.92×1010 yuan, respectively, showing an increasing trend. The sensitivity analysis showed that the analysis results were reliable. Amongall land use types, grassland made the most significant contribution to total ecosystem value, and the contribution rate of grassland ecological service was 93.90% and 72.90% in 2000—2010 and 2010—2020, respectively, followed by wetland and forest land. (3) In the study area, the value of each individual ecosystem service showed an increasing trend in the past 20 years, and the sub-value of regional ecological service function was regulatory service>support service>supply service>cultural service. Among the 11 individual functions, the significant service value was climate regulation, hydrology regulation, soil conservation and biodiversity. The sum of the four items accounted for more than 69.50% of the total value. Land use change in the upper reaches of the Yellow River in Sichuan affected the changes of regional ecosystem service value, and grassland was the most significant, followed by wetland and forest land. [Conclusion] The results showed that the results of ecological governance in the past 20 years have been gradually enhanced, and the ecological environment has continuously improved.

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许诺瑾,丁兵兵,余新晓,贾国栋,冯岩开,林佳雯.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[J].水土保持学报,2024,38(2):178~189

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  • 收稿日期:2023-08-25
  • 最后修改日期:2023-10-16
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  • 在线发布日期: 2024-05-20
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