基于GF-1 WFV的漫湾养殖区悬浮物浓度估算研究  

Estimation of Suspended Matter Concentration in Manwan Aquaculture area Based on GF-1 WFV

作　　者：徐耀汉 姚月 邢晓达 闫冬梅 刘慎栋 田东坡 朱晓丹 XU Yao-han;YAO Yue;XING Xiao-da;YAN Dong-mei;LIU Shen-dong;TIAN Dong-po;ZHU Xiao-dan(The 9th Geological Brigade,Hebei Bureau of Geology and Mineral Resources Exploration,Xingtai 054000,Hebei Province,China;International Research Center of Big Data for Sustainable Development Goals,Beijing 100094,China;Key Laboratory of Digital Earth Science,Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China)

机构地区：[1]河北省地质矿产勘查开发局第九地质大队,河北邢台054000 [2]可持续发展大数据国际研究中心,北京100094 [3]中国科学院空天信息创新研究院数字地球重点实验室,北京100094

出　　处：《中国农村水利水电》2024年第10期73-80,共8页China Rural Water and Hydropower

基　　金：中国科学院地球大数据科学数据中心运行维护项目(CAS-WX2022SDC-XK13);“香港大学-中国科学院iEarth可持续发展联合实验室”项目(313GJHZ2022074MI)。

摘　　要：网箱养殖对区域水环境影响较大,研究网箱养殖区水质参数变化规律对于认知区域性水产养殖对水环境的影响具有较大的现实意义。采用GF-1WFV数据,针对漫湾库区近年成倍增长的网箱养殖区,构建了网箱养殖区总悬浮物浓度反演模型。结果表明:模型具有较高的精度,反演值与实测值的平均相对误差为9.65%,均方根误差为0.33 mg/L。依据构建的反演模型与卫星影像反演了漫湾网箱养殖区的总悬浮物浓度,分析了库区和不同网箱体位置的总悬浮物浓度变化规律。研究发现,漫湾库区和不同网箱体位置的悬浮物浓度变化规律基本一致,网箱体总悬浮物浓度未因养殖局部“圈定”现象而出现异常,但比库区河流整体悬浮物浓度要小,主要因其总悬浮物浓度变化主要受降水、地表径流、水流流速等影响,网箱养殖会降低其对局部“圈定”区的总悬浮物浓度的影响。研究对漫湾库区和网箱养殖区总悬浮物浓度变化规律认识具有一定参考意义,后续将发展多源遥感数据的水质参数遥感估算模型,用于漫湾网箱养殖区水环境变化规律的认知。Net cage aquaculture has a significant impact on the regional water environment,and studying the changes in water quality parameters in net cage aquaculture areas is of great practical significance for understanding the impact of regional aquaculture on the water environment.This article uses GF-1WFV data to construct an inversion model for the total suspended solids concentration in the net cage aquaculture area,which has grown exponentially in the Manwan Reservoir area in recent years.The results indicate that the model has high accuracy,with an average relative error of 9.65%between the inverted values and the measured values,and a root mean square error of 0.33mg/L.Based on the constructed inversion model and satellite imagery,the total suspended solids concentration in the Manwan net cage aquaculture area was inverted,and the variation patterns of total suspended solids concentration in the reservoir area and different net box positions were analyzed.Research has found that the variation pattern of suspended solids concentration in the Manwan reservoir area and different positions of net cages is basically consistent.The total suspended solids concentration in net cages has not shown any abnormalities due to the phenomenon of local“delineation”in aquaculture,but is lower than the overall suspended solids concentration in the reservoir area.This is mainly because the variation of total suspended solids concentration is mainly affected by precipitation,surface runoff,water flow velocity,etc.Net cage aquaculture can reduce its impact on the total suspended solids concentration in local“delineation”areas.This study has certain reference significance for understanding the changes in total suspended solids concentration in the Manwan reservoir area and net cage aquaculture area.In the future,a multi-source remote sensing data remote sensing estimation model for water quality parameters will be developed for understanding the changing patterns in water environment in the Manwan net cage aquaculture area.

关 键 词：GF-1WFV 总悬浮物浓度 网箱养殖 漫湾库区 

分 类 号：P332[天文地球—水文科学] TP751[水利工程—水文学及水资源]