摘要
草地是地球上分布范围最广的陆地生态系统之一,地上生物量(AGB)是衡量草地生态功能与健康状况的重要指标。对草地地上生物量进行及时且准确的评估,对于实现草地资源的科学管理和可持续发展具有重要意义。利用传统的地面实测方法对草地地上生物量进行动态监测既费时又费力,又难以满足动态评估需求,而借助遥感技术进行间接观测可以提高效率。文中基于国内外相关研究,梳理机载激光雷达在草地生态系统研究中的应用状况及草地AGB估算中的不确定性,分析不同估算模型在草地生物量估算中的技术特点、适用性及其局限性,并对机载激光雷达技术在草地AGB估算领域的应用进行展望,旨在为大范围、高精度的草地生物量估算提供新的思路和技术支持。
Grassland is one of the most widely distributed terrestrial ecosystems on the earth.Grassland aboveground biomass(AGB)is an important indicator to measure the ecological function and health level of grassland.Timely and accurate assessment of grassland AGB is of great significance for the science-based management and sustainable development of grassland resources.The dynamic monitoring of grassland AGB using traditional ground measurement methods is time-and labor-consuming,which is difficult to meet the needs of dynamic assessment.However,indirect observation with remote sensing technology can improve efficiency.Based on the relevant research at home and abroad,this paper reviews the application of airborne laser radar in grassland ecosystem,expounds the uncertainties in grassland AGB estimation,and analyzes the technical features,applicability and limitations of different estimation models in grassland biomass estimation.At the end,the future application of airborne laser radar technology to grassland AGB estimation is discussed,aiming to provide new ideas and technical support for large-scale and high-precision grassland biomass estimation.
作者
魏蓉
舒清态
覃朝关
马绍阳
李正英
何海玲
蔡华诗
国朝胜
Wei Rong;Shu Qingtai;Qin Chaoguan;Ma Shaoyang;Li Zhengying;He Hailing;Cai Huashi;Guo Chaosheng(Forestry College of Southwest Forestry University,Kunming 650224,China)
出处
《世界林业研究》
北大核心
2025年第1期67-72,共6页
World Forestry Research
基金
云南省农业联合专项重点项目“基于深度学习无人机高光谱协同LiDAR数据的云南松松材线虫早期预警研究”(202301BD070001-002)
国家自然科学基金项目“生态脆弱区典型森林生态系统生化参数高光谱遥感反演关键技术研究”(31860205)。
关键词
草地
地上生物量
机载激光雷达
grass land
aboveground biomass
airborne laser radar
