近10年连云港青口河湿地生态系统服务价值变化分析

Analysis on the Change of Ecosystem Service Value of Qingkou River Wetland in Lianyungang in Recent 10 Years

连云港青口河湿地是连云港海岸带重要的滨海湿地,随着沿海开发大战略的实施,土地利用强度增大,生态系统服务价值发生较大变化。为了在小尺度下精细评估其湿地生态系统服务价值的变化情况,基于2009年和2018年的高分辨率遥感影像,对近10年连云港青口河湿地的土地利用变化及生态系统服务价值变化情况进行分析。研究表明,近10年连云港青口河湿地区域土地利用变化较快,滩涂湿地减少了47.54%,盐田减少了18.21%;同时,建设用地增加了20.94%;未利用地几乎从无到有。土地利用变化造成青口河湿地生态系统服务功能总价值减少约2162.73万元,主要由滩涂湿地和盐田的减少造成;10年间林地、水体和耕地的生态系统服务价值虽然有所增加但数量较低。城市的建设和发展给该区域的湿地带来较大压力,湿地保护刻不容缓。

Lianyungang Qingkou River wetland is an important coastal wetland in Lianyungang coastal zone.With the implementation of the coastal development strategy,the intensity of land use increases,and the ecosystem service value changes greatly.In order to evaluate the change of wetland ecosystem service value in small scale,based on the high-resolution remote sensing images in 2009 and 2018,the land use change and ecosystem service value change of Qingkou River Wetland in Lianyungang in recent 10 years were analyzed.The results show that the land use changes rapidly in the wet area of Qingkou River in Lianyungang in the past 10 years,with the decrease of beach wetland by 47.54%and the decrease of salt field by 18.21%;at the same time,the construction land has increased by 20.94%;the unused land is almost from scratch.The total value of ecosystem service value of Qingkou River wetland decreased by 21.6273 million yuan due to land use change,which was mainly caused by the decrease of beach wetland and salt field.Although the ecosystem service value of forest land,water body and cultivated land increased in 10 years,while the quantity was low.The construction and development of the city has brought great pressure to the wetland in this region,so wetland protection is urgent.