甘南黄河水源补给区生态系统服务价值时空演变

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中文摘要：甘南黄河水源补给区是黄河上游重要的生态屏障，稳定的生态系统服务供给对黄河流域高质量发展至关重要。该文基于2000-2020年土地利用变化，结合植被净初级生产力(NPP)数据和社会经济因素修正当量因子，核算研究区5个时期生态系统服务价值(ESV)，通过空间自相关、重心模型等方法，探究甘南黄河水源补给区2000-2020年ESV时空演变特征及空间异质性。结果表明:(1)2000-2020年甘南黄河水源补给区土地利用/覆被变化(LUCC)类型以草地、林地、耕地为主，其中草地、林地、建设用地和水域面积增加，耕地面积较大程度的减少，以19％的变化率减少了 448。57 km2。(2)2000-2020年甘南黄河水源补给区平均ESV为408。785 1×108元，以调节服务为主，其中水文调节、气候调节约占总ESV的48。69％，草地和林地对ESV贡献程度最大，是生态系统服务总价值的关键土地类型;水域面积的持续增加促进产水服务ESV上升，累计增幅达3。401 3％。(3)地均ESV呈较强的空间正相关，空间集聚性呈波动型变化趋势，林地的空间分布对ESV的空间格局有重要影响，ESV较高的区域与林地密集地区重叠，而ESV较低的区域则以建设用地、耕地为主。研究结果揭示了LUCC变化背景下甘南黄河水源补给区ESV的时空格局演变，可为该地区空间规划、经济发展和生态环境保护与管理提供依据，助力流域高质量发展。

外文标题：Spatiotemporal Evolution of Ecosystem Service Value in the Yellow River Water Recharge Area in Gannan

外文摘要：The Yellow River water recharge area in Gannan is an important ecological barrier in the upper reaches of the Yel-low River.The stable provision of ecosystem services is essential for the sustainable development of the Yellow River Basin.Based on land-use changes from 2000 to 2020,the equivalence factor is corrected by combining net primary productivity(NPP)data and socio-economic factors,the ecosystem services value(ESV)of the study area is calculated for five periods.Through methods such as spatial autocorrelation and centroid model,this study investigates the spatiotemporal evolution char-acteristics and spatial heterogeneity of ESV from 2000 to 2020.The results show that from 2000 to 2020,the land use/cover change(LUCC)types in the Yellow River water recharge area of Gannan were mainly grassland,woodland and cultivated land.The areas of grassland,woodland,construction land,and waters have increased,while cultivated land has decreased by 448.57 km2 at a rate of change of 19％.From 2000 to 2020,the average ESV was 408.785 1×108 yuan.The main focus was on regulation services,with hydrological regulation and climate regulation accounting for about 48.69％of the total ESV.Grassland and woodland made the greatest contribution to ESV and are key land types for the total value of ecosystem services.The size of the water area continued to increase,affecting the rise in ESV for water production services,with a cu-mulative increase of 3.401 3％.Land-averaged ESV showed a strong positive spatial correlation,and spatial clustering was generally stable.The spatial distribution of woodland had an important influence on the spatial pattern of ESV,with areas of higher ESV overlapping with areas of concentrated woodland,while areas of lower ESV were dominated by construction and cultivated land.The research results reveal the spatiotemporal pattern evolution of ESV in the Yellow River water re-charge area of Gannan under the background of LUCC changes.The results can provide a basis for spatial planning,eco-nomic development,ecological environmental protection and management in the region,contributing to the high-quality de-velopment of the basin.

外文关键词：

ecosystem service valueland use changenet primary productivityspatiotemporal evolution

作者：

雒慧霞、李杰、李广、郭继富

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作者单位：

甘肃农业大学信息科学技术学院,甘肃兰州 730070

甘肃农业大学林学院,甘肃兰州 730070

关键词：

生态系统服务价值土地利用变化植被净初级生产力时空演变

基金：

国家自然科学基金项目国家自然科学基金项目甘肃省拔尖领军人才项目甘肃省重点研究发展计划甘肃省高等学校产业支撑项目甘肃省财政专项

项目编号：

3236043842361060GSBJLJ-2023-0922YF7FA1162022CYZC-41GSCZZ 20160909

出版年：

2024

DOI：

10.19672/j.cnki.1003-6504.0715.24.338

环境科学与技术

湖北省环境科学研究院

环境科学与技术

CSTPCD北大核心

影响因子：0.943

ISSN：1003-6504

年,卷(期)：2024.47(9)