刘玉玉， 张令光， 姜 欣， 刘齐栋.水系连通过程中土地利用与生态服务价值变化分析——以济南西部多水源连通交汇区为例Journal of Water Resources and Water Engineering[J].,2021,32(3):30-36
水系连通过程中土地利用与生态服务价值变化分析——以济南西部多水源连通交汇区为例
Study on the change of land use and ecosystem service value in the process of water system connection: A case study of the confluent area of multi water resources in western Jinan
Water system connection is a crucial part of water resources management and water conservancy construction. It is of great significance to study the changes of land use and ecosystem service value in the confluent area of water systems. Taking the confluent area of multi-resources (the Yellow River, Yangtze River, Yufu River, Xiaoqing River and Yuqing Lake Reservoir) in western Jinan as the study area, and based on the interpreted data derived from TM & OLI images, we quantitatively analyzed the transformation of land use and its impact on the environment of the region, which occurred in the process of river system connection during 1988 - 2014. Results show that during the period of 1988-2014, forest land, arable land and construction land in the study area were decreased by 7.76 km2, 3.26 km2 and 4.77 km2 respectively, whereas water area and grassland were increased by 9.77 km2 and 6.03 km2 respectively. The land use transformation in the study area is divided into two phases, which are forest-transformation dominant phase and farmland-transformation dominant phase, with the land use being less stable in the former phase. During the period of 1988-2014, the ecosystem service value in the study area increased from 0.904×109 to 1.5×109 yuan, indicating that the local ecological quality had been improving and the ecosystem was becoming more complicated. The preservation of the wetland is the key to improving the ecological quality of the study area. The restoration and construction of the wetland is the achievement of water system connection, and in turn the wetland maintains the connectivity of the water systems.