拉萨河流域土地利用与生态系统服务价值时空演变及驱动因素
土地利用变化对生态文明建设产生强烈影响，进而威胁经济社会与生态环境的可持续发展。基于高精度土地利 用数据，分析了拉萨河流域 2000—2020 年土地利用和生态系统服务价值(Ecosystem Service Value, ESV)时空演变特 征，并借助 PLUS 模型和地理探测器分别探索了土地利用变化和 ESV 空间分异的驱动因素。结果表明：(1)2000— 2020 年拉萨河流域土地利用以草地为主，占流域总面积的 85.23%。土地利用呈草地缩减，其余地类扩张的趋势。其 中，草地减少 2.45%，建设用地、水域和林地分别扩张 199.72%、44.64%和 21.97%。(2)流域土地利用变化受海 拔、年均地温、距湖泊和水库距离等因素影响，其中，海拔对耕地、林地、水域和建设用地扩张的贡献度分别高达 0.18、0.11、0.28 和 0.13，坡度和年均地温对草地和未利用地变化的贡献度分别为 0.14 和 0.15。(3)2000—2020 年 流域 ESV 总体增加 1.14%(14.96×108 元)，草地和气候调节分别为 ESV 贡献最突出的土地利用类型和生态系统服务 类型，两者的贡献率分别为 87.13%和 25.50%。(4)流域 ESV 具有显著空间分异性，受 NDVI、海拔、年均风速和年 均气温等因子影响。其中，NDVI 的解释力高达 0.46，任意两两因子的交互均会增强 ESV 的分异性。研究结果可为拉 萨河流域及类似区域国土空间规划和生态文明建设提供科学参考。
hange in land use profoundly impacts ecological development, posing a consequential threat to the sustainable progress of society, civilization, economy, and the environment. Based on high-precision land use data from 2000 to 2020, this study delves into the spatiotemporal evolution of land use and ecosystem service value (ESV) in the Lha sa River Basin. By employing PLUS models and geographic detectors, the driving factors of land use alterations and the spatial differentiatio n of ESV were explored. The findings reveal that (1) The predominant land use in the Lhasa River Basin was grasslan d from 2000 to 2020, constituting 85.23% of the total basin area, indicating a trend of grassland reduction and expansion of other l and types; specifically, the grasslands decreased by 2.45%, while construction land, water area, and forest land expanded by 199.72%, 44.64%, and 21.97%, respectively. (2) The change in land use within the watershed was intricately influenced by factors such as altitude, annual average ground temperature, and distance from lakes and reservoirs. Altitude, in particular, exhibited a substantial contribution to the expansion of water bodies and cultivated, forest, and construction lands, with respective values of 0.28, 0.18, 0.11, and 0.13. Slope and annual average ground temperature contributed significantly to changes in grass and unused lands, registering values of 0.14 and 0.15, respectively. (3) From 2000 to 2020, the overall ESV of the watershed increased by 1.14% (1.496 billion yuan). Grassland and climate regulation were the land use and ecosystem service types with the most prominent respective contributions of 87.13% and 25.50% to the ESV. (4) Furthermore, the ESV within the watershed exhibited substantial spatial differentiation, influenced by factors including NDVI, altitude, annual average wind speed, and annual average temperature. The explanatory power of NDVI reached a notable 0.46, and the interaction between any two factors accentuated ESV differentiation. These research outcomes provide valuable scientific insights for guiding the spatial planning and ecological and civilizational development of the Lhasa River Basin and analogous regions.
周建伟、罗 君、马雪洋
环境科学技术现状自然地理学环境科学理论
土地利用生态系统服务价值驱动因子拉萨河流域
land useecosystem service valuedriving factorsLhasa River Basin
周建伟,罗 君,马雪洋.拉萨河流域土地利用与生态系统服务价值时空演变及驱动因素[EB/OL].(2024-07-04)[2025-08-10].https://chinaxiv.org/abs/202407.00072.点此复制
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