测绘通报 ›› 2025, Vol. 0 ›› Issue (11): 15-21,39.doi: 10.13474/j.cnki.11-2246.2025.1103

• 输电通道遥感分析 • 上一篇    下一篇

基于多源遥感数据的输电通道森林地上生物量扰动分析

刘海波1, 张苏1, 荣经国1, 常建洋2, 杨洲2   

  1. 1. 国网经济技术研究院有限公司, 北京 102209;
    2. 中国科学院空天信息创新研究院, 北京 100094
  • 收稿日期:2025-07-29 发布日期:2025-12-04
  • 通讯作者: 张苏。E-mail:zhangsu615@163.com
  • 作者简介:刘海波(1976—),男,博士,教授级高级工程师,研究方向为电网工程遥感技术应用。E-mail:liuhaibo@chinasperi.sgcc.com.cn
  • 基金资助:
    国家电网有限公司总部科技项目(1400-202456289A-1-1-ZN)

Disturbance analysis of forest aboveground biomass in power transmission corridors based on multi-source remote sensing data

LIU Haibo1, ZHANG Su1, RONG Jingguo1, CHANG Jianyang2, YANG Zhou2   

  1. 1. State Grid Economic and Technological Research Institute Co., Ltd., Beijing 102209, China;
    2. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
  • Received:2025-07-29 Published:2025-12-04

摘要: 输电通道沿线森林地上生物量(AGB)在维系生态系统稳定性和区域碳循环中至关重要,但目前缺乏对输电通道区域森林AGB潜在空间扰动的定量评估研究。本文以重庆涪陵区两处典型输电通道为研究对象,融合全球生态系统动态调查(GEDI)星载激光雷达、机载AGB、Sentinel-2和航天飞机雷达地形测绘任务(SRTM)等多源遥感数据,构建光斑尺度AGB反演与区域制图框架,并结合缓冲区与垂直剖面分析从整体和局部层面量化通道对森林AGB的影响。结果显示,光斑尺度AGB反演均方根误差(RMSE)为19.36 Mg/hm2,区域尺度AGB制图RMSE为2.04 Mg/hm2;不同缓冲区宽度下内外缓冲区森林AGB差异较小,垂直剖面内森林AGB波动小于5 Mg/hm2。总体而言,输电通道对森林AGB未造成显著扰动,AGB空间差异主要由不同自然条件下的空间异质性引起。

关键词: 星载激光雷达, 多源遥感数据, 输电通道, 森林地上生物量, 扰动分析

Abstract: Aboveground biomass (AGB) of forests along transmission corridors is crucial for ecosystem stability and regional carbon cycling,yet quantitative assessments of potential spatial disturbances caused by transmission corridors remain limited.This study focuses on two typical transmission corridors in Fuling district,Chongqing,integrating multi-source remote sensing data including global ecosystem dynamics investigation (GEDI) spaceborne LiDAR,airborne AGB measurements,Sentinel-2 imagery,and shuttle radar topography mission (SRTM) data.A framework is developed for footprint-scale AGB retrieval and regional-scale mapping.Buffer and vertical profile analyses are further applied to quantify the impact of transmission corridors on forest AGB at both landscape and local scales.The footprint-scale AGB retrieval achieves a root mean square error (RMSE) of 19.36 Mg/hm2,and the regional-scale AGB map has an RMSE of 2.04 Mg/hm2.Differences in AGB between inner and outer buffer zones are minimal,and fluctuations along vertical profiles are less than 5 Mg/hm2.Overall,transmission corridors do not cause significant disturbances to forest AGB.Observed spatial variations in AGB are mainly attributable to natural heterogeneity.

Key words: spaceborne LiDAR, multi-source remote sensing data, power transmission corridor, forest aboveground biomass, disturbance analysis

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