基于北京三号卫星的行洪河道林木特征动态变化监测分析  

Monitoring and analysis of dynamic changes of forest characteristics in flood discharge channel based on Beijing-3 satellite

作　　者：王平[1] 王子璇 李霞 王健 WANG Ping;WANG Zixuan;LI Xia;WANG Jian(Fangshan District Water Bureau of Beijing Municipality,Beijing 102442;Twenty First Century Aerospace Technology Co.,Ltd.,Beijing 100096)

机构地区：[1]北京市房山区水务局,北京102442 [2]二十一世纪空间技术应用股份有限公司,北京100096

出　　处：《中国防汛抗旱》2024年第12期80-84,共5页China Flood & Drought Management

摘　　要：北京房山区是海河“23·7”流域性特大洪水受灾最严重的地区之一,以房山区永定河主流区葫芦垈村至永定河房山段终点为研究区域,采用北京三号卫星对该区域河道林木优化进行动态监测与评价。通过对灾后8—10月连续3期影像数据进行对比分析,得出研究区域内林木面积和斑块数量分别下降了92.55%和83.52%,林木斑块离散化程度有了很大提高。由此可知,北京三号卫星能有效辅助相关部门对河道林木优化施工进度和效果进行动态监督,辅助提升河道行洪安全。Fangshan District in Beijing city is one of the areas with the most serious casualties and property losses caused by the“23·7”catastrophic basinwide flood disaster in the Haihe River Basin.This article takes the Huludai Village in the mainstream of Yongding River in Fangshan District and the end of Fangshan section of Yongding River as the research area,and adopts the Beijing-3 satellite to dynamically monitor and evaluate the optimization of riverbed forests in this area.Through a comparative analysis of three consecutive sets of image data from August to October in 2023 after the disaster,it was found that the forest area and the number of patches in the study area decreased by 92.55%and 83.52%respectively,and the discretization degree of forest patches increased significantly.It can be seen that the Beijing-3 satellite can effectively assist relevant departments in dynamically supervising the progress and effect of riverbed forest optimization construction,and assist in improving the safety of riverine flood discharge.

关 键 词：北京三号卫星 监测 定量分析 特征分析 河道林木 北京房山区 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] TV87[自动化与计算机技术—控制科学与工程]