亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整的填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Mapping site index in coniferous forests using bi-temporal airborne laser scanning data and field data from the Swedish national forest inventory

森林资源清查 站点索引 断面积 苏格兰松 激光扫描 环境科学 森林经营 冷杉云杉 遥感 营林 林业 地理 农林复合经营 生态学 松属 激光器 植物 物理 光学 生物
作者
Alex Appiah Mensah,Jonas Jonzén,Kenneth Nyström,Jörgen Wallerman,Mats Nilsson
出处
期刊:Forest Ecology and Management [Elsevier]
卷期号:547: 121395-121395 被引量:1
标识
DOI:10.1016/j.foreco.2023.121395
摘要

Recent advancements in remote sensing of forests have demonstrated the capabilities of three-dimensional data acquired by airborne laser scanning (ALS) and, consequently, have become an integral part of enhanced forest inventories in Northern Europe. In Sweden, the first national laser scanning revolutionised forest management planning through low-cost production of large-scale and spatially explicit maps of forest attributes such as basal area, volume, and biomass, compared to the earlier practice based on field survey data. A second scanning at the national level was launched in 2019, and it provides conditions for the estimation of height growth and site index. Accurate and up-to-date information about site productivity is relevant for planning silvicultural treatments and for the prognosis of forest status and development over time. In this study, we explored the potential of bi-temporal ALS data and other auxiliary information to predict and map site productivity by site index according to site properties (SIS) of Norway spruce (Picea abies (L.) Karst) and Scots pine (Pinus sylvestris L.) in even-aged stands in Sweden. We linked ground survey data of SIS from more than 11,500 plots of the Swedish National Forest Inventory (NFI) to bi-temporal ALS data to predict and map site index using an area-based method and two regression modelling strategies: (1) a multiple linear regression (MLR) model with an ordinary least-squares parameter estimation method, and (2) a non-parametric random forests (RF) model optimised for hyper-parameter tuning. For model development, permanent plots were used, whereas the validation was done on the temporary plots of the Swedish NFI and an independent stand-level dataset. Species-specific models were developed, and the root mean square error (RMSE) metric was used to quantify the residual variability around model predictions. For both species, the MLR model gave precise and accurate estimates of SIS. The RMSE for SIS predictions was in the range of 1.96 – 2.11 m, and the relative RMSE was less than 10 % (7.68 – 9.49 %) of the reference mean value. Final predictors of site index include metrics of 90th percentile height and annual increment in the 95th percentile height, altitude, distance to coast, and soil moisture. Country-wide maps of SIS and the corresponding pixel-level prediction errors at a spatial resolution of 12.5 m grid cells were produced for the two species. Independent validations show the site index maps are suitable for use in operational forest management planning in Sweden.
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
1秒前
4秒前
nano发布了新的文献求助10
8秒前
Polymer72应助科研通管家采纳,获得20
20秒前
英姑应助科研通管家采纳,获得10
20秒前
34秒前
39秒前
coolru完成签到 ,获得积分10
41秒前
Luuu完成签到 ,获得积分20
48秒前
传奇3应助我喜欢下雪采纳,获得10
1分钟前
爱吃橙子皮完成签到 ,获得积分10
1分钟前
非洲大象发布了新的文献求助50
2分钟前
活力的纸飞机完成签到 ,获得积分10
2分钟前
fengfenghao完成签到 ,获得积分10
2分钟前
2分钟前
Polymer72应助科研通管家采纳,获得20
2分钟前
自信松思完成签到 ,获得积分10
2分钟前
非洲大象完成签到,获得积分10
2分钟前
吱吱草莓派完成签到 ,获得积分10
2分钟前
天天开心完成签到 ,获得积分10
3分钟前
义气的书雁完成签到,获得积分10
3分钟前
3分钟前
wy发布了新的文献求助10
4分钟前
孙老师完成签到 ,获得积分10
4分钟前
4分钟前
4分钟前
4分钟前
力行发布了新的文献求助10
5分钟前
星流xx完成签到 ,获得积分10
5分钟前
5分钟前
彭于晏应助张二宝儿采纳,获得10
5分钟前
Shicheng完成签到,获得积分10
5分钟前
6分钟前
小胖完成签到 ,获得积分10
6分钟前
Polymer72应助科研通管家采纳,获得20
6分钟前
6分钟前
完美世界应助米一采纳,获得10
6分钟前
米米碎片发布了新的文献求助10
6分钟前
6分钟前
米米碎片完成签到,获得积分10
6分钟前
高分求助中
Production Logging: Theoretical and Interpretive Elements 2000
Very-high-order BVD Schemes Using β-variable THINC Method 1200
BIOLOGY OF NON-CHORDATES 1000
RNAの科学 ―時代を拓く生体分子― 金井 昭夫(編) 800
进口的时尚——14世纪东方丝绸与意大利艺术 Imported Fashion:Oriental Silks and Italian Arts in the 14th Century 800
Autoregulatory progressive resistance exercise: linear versus a velocity-based flexible model 550
Education and Upward Social Mobility in China: Imagining Positive Sociology with Bourdieu 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 物理化学 催化作用 细胞生物学 免疫学 冶金
热门帖子
关注 科研通微信公众号,转发送积分 3353491
求助须知:如何正确求助?哪些是违规求助? 2978141
关于积分的说明 8683772
捐赠科研通 2659505
什么是DOI,文献DOI怎么找? 1456277
科研通“疑难数据库(出版商)”最低求助积分说明 674302
邀请新用户注册赠送积分活动 665020