Relationship between Lidar-Derived Canopy Densities and the Scattering Phase Center of High-Resolution TanDEM-X Data

天蓬 每年落叶的 激光雷达 遥感 树冠 环境科学 森林结构 叶面积指数 合成孔径雷达 植被(病理学) 雷达 大气科学 地理 地质学 生态学 计算机科学 医学 电信 生物 病理 考古
作者
Jonas Ziemer,Clémence Dubois,Christian Thiel,José–Luis Bueso–Bello,Paola Rizzoli,Christiane Schmullius
出处
期刊:Remote Sensing [MDPI AG]
卷期号:15 (14): 3589-3589 被引量:1
标识
DOI:10.3390/rs15143589
摘要

The estimation of forestry parameters is essential to understanding the three-dimensional structure of forests. In this respect, the potential of X-band synthetic aperture radar (SAR) has been recognized for years. Many studies have been conducted on deriving tree heights with SAR data, but few have paid attention to the effects of the canopy structure. Canopy density plays an important role since it provides information about the vertical distribution of dominant scatterers in the forest. In this study, the position of the scattering phase center (SPC) of interferometric X-band SAR data is investigated with regard to the densest vegetation layer in a deciduous and coniferous forest in Germany by applying a canopy density index from high-resolution airborne laser scanning data. Two different methods defining the densest layer are introduced and compared with the position of the TanDEM-X SPC. The results indicate that the position of the SPC often coincides with the densest layer, with mean differences ranging from −1.6 m to +0.7 m in the deciduous forest and +1.9 m in the coniferous forest. Regarding relative tree heights, the SAR signal on average penetrates up to 15% (3.4 m) of the average tree height in the coniferous forest. In the deciduous forest, the difference increases to 18% (6.2 m) during summer and 24% (8.2 m) during winter. These findings highlight the importance of considering not only tree height but also canopy density when delineating SAR-based forest heights. The vertical structure of the canopy influences the position of the SPC, and incorporating canopy density can improve the accuracy of SAR-derived forest height estimations.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
1秒前
一二完成签到,获得积分10
2秒前
4秒前
菠萝完成签到 ,获得积分10
4秒前
5秒前
神介.Tzx发布了新的文献求助10
7秒前
含蓄飞槐发布了新的文献求助10
8秒前
10秒前
大模型应助完美梨愁采纳,获得10
11秒前
11秒前
12秒前
13秒前
14秒前
Summer发布了新的文献求助10
15秒前
星辰大海应助俭朴涫采纳,获得10
16秒前
17秒前
司空莫茗发布了新的文献求助30
18秒前
美丽的剑心完成签到,获得积分10
19秒前
降娄完成签到,获得积分10
19秒前
20秒前
李小政完成签到,获得积分10
20秒前
笨笨的凌青完成签到,获得积分10
24秒前
西柚完成签到,获得积分10
24秒前
嘟嘟雯完成签到 ,获得积分10
24秒前
24秒前
情怀应助BOB采纳,获得10
25秒前
25秒前
心灵美的修洁完成签到 ,获得积分10
25秒前
ciri完成签到,获得积分20
26秒前
桐桐应助WJ采纳,获得10
26秒前
狗大王完成签到,获得积分10
27秒前
shanika发布了新的文献求助10
27秒前
完美梨愁发布了新的文献求助10
28秒前
30秒前
31秒前
31秒前
32秒前
32秒前
33秒前
高分求助中
The late Devonian Standard Conodont Zonation 2000
The Lali Section: An Excellent Reference Section for Upper - Devonian in South China 1500
Nickel superalloy market size, share, growth, trends, and forecast 2023-2030 1000
Smart but Scattered: The Revolutionary Executive Skills Approach to Helping Kids Reach Their Potential (第二版) 1000
Mantiden: Faszinierende Lauerjäger Faszinierende Lauerjäger 800
PraxisRatgeber: Mantiden: Faszinierende Lauerjäger 800
A new species of Coccus (Homoptera: Coccoidea) from Malawi 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3245737
求助须知:如何正确求助?哪些是违规求助? 2889446
关于积分的说明 8258249
捐赠科研通 2557757
什么是DOI,文献DOI怎么找? 1386555
科研通“疑难数据库(出版商)”最低求助积分说明 650327
邀请新用户注册赠送积分活动 626675