| 基于土地利用结构的河流岸带生态系统服务簇识别 |
| Identification and Evaluation of Ecosystem Service Bundles in Riparian Zones Based on Land Use |
| 投稿时间：2022-11-04 修订日期：2022-12-24 |
| DOI：10.15928/j.1674-3075.202211040442 |
| 中文关键词:河岸带 土地利用结构 生态系统服务簇 层次聚类分析 |
| 英文关键词:riparian zone land utilization structure ecosystem service bundles hierarchical cluster analysis |
| 基金项目:国家重点研发计划（2016YFC0401502）；江苏省水利科技项目（2021043）；广东省水利科技创新项目（202107） |
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| 中文摘要: |
| 河流岸带生态系统服务功能的有效发挥是河流生态系统稳定且健康的重要保障之一。为识别河流岸带土地利用与生态服务价值的空间结构，本文从河流岸带保护角度选取水资源保护、净化环境、水文调节、土壤保持、维持养分循环、生物多样性6项生态服务功能，基于遥感影像解译的土地利用数据，运用修正的当量因子法估算得到生态服务价值的空间分布规律，进而进行层次聚类分析识别河流岸带生态服务簇，并应用于太湖流域湖西区溧阳市县级河流——竹箦河作为实例研究。结果表明：（1）竹箦河河岸带6项生态服务价值呈现出显著的空间异质性和聚集性。（2）竹箦河河岸带可划分为5大类生态服务簇，分别为水源涵养型、绿色多元型、经济生态型、生态脆弱型以及耗水污染型。（3）各类服务簇的生态系统服务特点与空间布局分异明显，与岸带实际土地利用结构相协调，揭示了竹箦河河岸带生态服务功能普遍较薄弱的现状。本文的研究结果可为竹箦河及类似平原地区骨干河流岸带功能区划分以及河岸带生态保护与修复方案的制定提供理论参考。 |
| 英文摘要: |
| Effective functioning of ecosystem services in riparian zones is an important safeguard for the stability and health of river ecosystems. In this study, Zhuze River, a typical county-level river of Liyang City in the Taihu Lake basin was selected for a case study, and we explored the spatial distribution characteristics of land use and ecosystem service values in the river’s riparian zone. Interpreted ArcGIS remote sensing images of the study area on April 20, 2020, combined with a field investigation and information gathered about the site were used to classify land use. Nine land use types were identified:?rivers, ponds, paddy field, dry field, broad-leaved forest land, shrub land, floodplain meadow, construction land, and bare land. Six ecosystem functions provided by the riparian zone were identified: water supply, environment purification, water regulation, soil formation, nutrient cycling, and biodiversity maintenance. The revised equivalent factor method was used to estimate the spatial extent of each ecological service. Hierarchical cluster analysis of ecosystem service values was carried out to identify the spatial distribution of ecosystem service bundles. Our aim was to improve the efficiency of evaluating ecosystem services and classifying ecosystem service bundles in the riparian zones of medium and small sized river networks, and to support conservation and restoration of river ecosystems. Results show: (1) The service value per unit area of the six ecosystem functions in the riparian zone of Zhuze River displayed significant spatial heterogeneity and aggregation. High-value areas were mainly concentrated at the confluence of tributaries with the Zhuze River, while the value of ecological services in urban areas was low or even negative. (2) The riparian zone of Zhuze River included five ecosystem service bundles: water conservation, green diversity, ecology-based commerce, fragile ecology, and water deprivation and pollution. (3) The service characteristics and spatial layouts of these ecosystem service bundles were obviously differentiated, coordinated with the actual land use structure of the riparian zone and revealed the generally weak state of ecosystem services in the riparian zone along Zhuze River. Our results provide a theoretical reference to support functional zoning, ecological protection and a restoration plan for the riparian zone of Zhuze River and other similar rivers. |
| 徐 慧,高雨慧,周 强,闫怀春,蔡晨茵,刘志杰.2024.基于土地利用结构的河流岸带生态系统服务簇识别[J].水生态学杂志,45(3):52-59. |
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