基于土地利用结构的河流岸带生态系统服务簇识别

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、生物多样性六项生态服务功能，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）竹箦河河流岸带六项生态服务价值呈现出显著的空间异质性和聚集性。（2）竹箦河河流岸带可划分为五大类生态服务簇，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，揭示了竹箦河河流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流岸带生态保护与修复方案的制定提供理论参考。

Identification of ecosystem service bundles in riparian zone based on land use structure

The effective play of ecosystem services in riparian zone is one of the important guarantees for the stability and health of river ecosystems. In order to clear the spatial distribution of land use and ecosystem service value, this paper selected six functions from the perspective of riparian protection, including water supply, environment purification, water regulation, soil formation, nutrient cycling and biodiversity maintenance. Based on the land use data interpreted by remote sensing images, the revised equivalent factor method was used to estimate the spatial distribution of ecological service value. Accordingly, hierarchical cluster analysis of ecosystem service value was carried out to indentify the spatial distribution of ecosystem services bundles, which was applied to the riparian zone of Zhuze River, a typical county-level river of Liyang City in Huxi District of Taihu Lake Basin. The results demonstrated that: (1) The six ecosystem services values per unit area of the riparian zone of Zhuze River showed significant spatial heterogeneity and aggregation. (2) The riparian zone of Zhuze River could be classified into five kinds of ecosystem services bundles, respectively water conservation bundle, green diversified bundle, ecology-based economy bundle, ecologically fragile bundle, and water deprivation and pollution bundle. (3) The characteristics of services and spatial layout of these bundles were obviously differentiated and coordinated with the actual land use structure of the riparian zone, revealing the generally weak state of the ecosystem services of the riparian zone along Zhuze River. The results can offer some theoretical references for the functional zoning and the formulation of ecological protection and restoration plan along the riparian zone of Zhuze River and similar rivers.