汉石桥湿地自然保护区土地利用格局及其生态系统服务价值动态

Dynamics of Land Use Patterns and Ecological Service Values of Hanshiqiao Wetland Nature Reserve

为了有效地保护汉石桥湿地,采用模型评估方法,利用6个时期植物生长季的北京二号卫星遥感影像数据,分析汉石桥湿地的土地利用类型现状和生态系统服务价值,估算了6个时期汉石桥湿地自然保护区生态系统服务价值。研究结果表明,与2005年相比,2020年汉石桥湿地自然保护区林地面积增加了167.3 hm^(2),草地面积增加了87.5 hm^(2),湿地面积增加了53.1 hm^(2);2005年、2008年、2011年、2014年、2017年和2020年,汉石桥湿地自然保护区生态系统服务的总价值分别为88 355×10^(4)元、81 138×10^(4)元、82 398×10^(4)元、71 773×10^(4)元、79 828×10^(4)元和80 479×10^(4)元;调节服务是汉石桥湿地自然保护区主要的生态服务,6个时期的调节服务价值总和占生态系统服务总价值的46.7%;湿地对汉石桥湿地自然保护区生态服务的贡献最大;湿地面积增加、耕地面积减少是汉石桥湿地生态服务主要功能转变的主要原因。

In order to effectively protect Hanshiqiao Wetland Nature Reserve, remote sensing image interpretation and model evaluation methods were used to analyze the current characteristics of land use pattern and changes in service functions of Hanshiqiao Wetland Nature Reserve. The ecological service values of Hanshiqiao Wetland Nature Reserve in 6 periods were estimated. The results showed that from 2005 to2020, woodland area, grassland area and wetland area increased by 167.3 hm^(2), 87.5 hm^(2)and 53.1 hm^(2)respectively. The ecological service values of Hanshiqiao Wetland Nature Reserve were 88 355 × 10^(4)yuan,81 138×10^(4)yuan, 82 398×10^(4)yuan, 71 773×10^(4)yuan, 79 828×10^(4)yuan and 80 479×10^(4)yuan in 2005, 2008,2011, 2014, 2017 and 2020. Regulation service was the main ecological service function of Hanshiqiao Wetland Nature Reserve. From 2005 to 2020, the total value of regulation service accounts for 46.7% of the total value of service. Wetland(natural wetland and constructed wetland) contributed the most to the ecological service of Hanshiqiao Wetland. The increase of wetland area and decrease of farmland area were the main reasons for the transformation of dominant ecological service function in Hanshiqiao Wetland Nature Reserve.