| 东江源区生态系统服务价值时空变化及驱动力研究 |
| Spatio-temporal Changes and Driving Forces of Ecosystem Service Value in the Headwater Region of Dongjiang Rive |
| 投稿时间：2022-06-13 修订日期：2022-08-03 |
| DOI：10.15928/j.1674-3075.202206130227 |
| 中文关键词:生态系统服务价值 时空变化 地理探测器 驱动因子 东江源区 |
| 英文关键词:ecosystem service value spatial-temporal change geo-detector driving factors headwater of the Dongjiang River |
| 基金项目:江西省教育厅科学技术研究项目(GJJ211427)；江西省高校人文社会科学研究项目(JC18223)；生态环境部生物多样性保护专项——东江源头区生态系统服务价值评估 |
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| 中文摘要: |
| 探究河流源区生态系统服务价值的时空变化和主要驱动因子，对制定流域可持续发展政策具有重要意义。基于修订的生态系统服务价值当量因子表，选取2007年和2017年两期Landsat遥感影像解译的土地利用数据，分析东江源区生态系统服务价值的时空变化特征，运用地理探测器解析东江源区生态系统服务价值变化的驱动因子。结果表明：(1)东江源区2007─2017年生态系统服务总价值减少了5.45亿元；(2)2007─2017年东江源区生态系统服务总价值变化空间分异的形成受多个因子综合作用，其中乡(镇)面积与距水系平均距离、乡(镇)面积与距居民点平均距离的因子交互贡献最大，其生态系统服务价值空间分异影响力q值分别达到了0.86和0.81；(3)在中国南方山地丘陵区常见土地利用类型转换模式中，农田向果园转化会导致生态系统服务价值增加，而林地向果园转化则会导致生态系统服务价值减少；(4)河流源区生态系统服务价值的时空变化受到自然因子、人为因子及二者之间的交互作用共同驱动。研究结果可为东江源区生态保护政策的制定提供科学依据和理论支撑。 |
| 英文摘要: |
| To develop effective sustainable development policies for river basins, it is crucial to understand the spatio-temporal changes and primary driving forces of ecosystem service values (ESV) in river headwater regions. The headwater region of the Dongjiang River is an important water supply source for southern Jiangxi Province and Guangdong Province. In this study, we explored the spatio-temporal variation of ESV in the headwater region based on the revised ESV equivalent factors table and interpreted land use data using Landsat remote sensing images from 2007 and 2017. The driving factors of ESV in the headwater region of the Dongjiang River was then analyzed using a geo-detector. Our aim was to provide scientific data to support ecosystem conservation in the headwater region of Dongjiang River. Land use types in the headwater area includes farmland, orchards, forests, surface water, mining and other land. Results show that: (1) The total value of ecosystem services in the headwater region of the Dongjiang River decreased by 545 million yuan from 2007 to 2017. Forests made the primary contribution to the total ESV, followed by orchards. (2) Spatial differentiation of ecosystem services in the headwater region was influenced by multiple factors. Among them, the average distance from the township to the water source, and the average distance from the township to the residential areas contributed the most, with q values of the two factors of 0.86 and 0.81. (3) During the 10 years from 2007 to 2017, the change of total ESV was small. The conversion from orchard to forest and from farmland to orchard land increased the value (870 million and 433 million yuan) of ecosystem services, while the conversion from forest to orchard and from water to construction land decreased the value (1 022 million and 228 million yuan) of ecosystem services. (4) The spatio-temporal changes in ecosystem service value in the river headwater region of Dongjiang River were driven by natural factors, anthropogenic factors and their interactions. |
| 赵晓慧,朱明畅,雷军成,陈令怡,吴 军,崔 鹏,陈文娟.2023.东江源区生态系统服务价值时空变化及驱动力研究[J].水生态学杂志,44(2):26-33. |
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