基于ENVI+HEC-RAS的苏北运河生态修复方法及改善效果研究  

Research on Ecological Restoration Method and Improvement Effect of Northern Jiangsu Canal Based on ENVI+HEC-RAS

作　　者：任黎[1,2] 蔡文美 朱佳晨 刘雨桐 杨文娇 REN Li;CAI Wen-mei;ZHU Jia-chen;LIU Yu-tong;YANG Wen-jiao(College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;School of Hydraulic Engineering,Wanjiang University of Technology,Ma’anshan 243031,China)

机构地区：[1]河海大学水文水资源学院,江苏南京210098 [2]皖江工学院水利工程学院,安徽马鞍山243031

出　　处：《水电能源科学》2024年第8期197-200,177,共5页Water Resources and Power

基　　金：国家重点研发计划(2018YFC150136);江苏省水利科技基金重大项目(2019003)。

摘　　要：鉴于生态修复对维持河流健康生命十分重要,以提升植被覆盖度与水质为目标,对苏北运河进行生态修复。基于2018年研究区Landsat8遥感影像数据,运用ENVI软件对苏北运河全河段的土地利用情况进行处理分析,并在增加上游生态来水的情况下,使用HEC-RAS软件对泗阳新一水厂断面的COD水质指标浓度进行模拟。结果表明,苏北运河全河段植物覆盖度最大可提升至59.84%,且Kappa系数结果均大于0.6,精度符合要求;COD水质指标浓度在5、10、12月达到Ⅱ类水标准,其余月份较调控前均已达到Ⅲ类水标准,可见在增大生态来水作用下,运河水质得到提升。In view of the importance of ecological restoration to maintain the healthy life of the river,to improve the vegetation coverage and water quality as the goal,ecological restoration in the Northern Jiangsu Canal was carried out.Based on the Landsat8 remote sensing image data of the study area in 2018,software ENVI was used to analyze the land use in the whole reach of the Northern Jiangsu Canal.The software HEC-RAS was used to simulate the COD water quality index concentration in the section of the New No.1 Water plant in Siyang under the condition that the upstream ecological inflow was increased.The results show that the maximum plant coverage in the whole reach of Northern Jiangsu Canal could be increased to 59.84%,and the Kappa coefficients were greater than 0.6,which met the requirements.The concentration of COD water quality index reached the ClassⅡwater standard in May,October and December,and the classⅢwater standard in other months compared with before regulation.It can be seen that the water quality of the canal has been improved under the effect of increasing ecological inflow.

关 键 词：苏北运河 生态修复 植被覆盖度 水质 ENVI HEC-RAS 

分 类 号：TV882.8[水利工程—水利水电工程] X522[环境科学与工程—环境工程]