Prediction of tree biomass in the forest–tundra ecotone using airborne laser scanning
نویسندگان
چکیده
منابع مشابه
Automatic Detection of Small Single Trees in the Forest-Tundra Ecotone Using Airborne Laser Scanning
A large proportion of Norway’s land area is occupied by the forest-tundra ecotone. The vegetation of this temperature-sensitive ecosystem between mountain forest and the alpine zone is expected to be highly affected by climate change and effective monitoring techniques are required. For the detection of such small pioneer trees, airborne laser scanning (ALS) has been proposed as a useful tool e...
متن کاملDetection and Segmentation of Small Trees in the Forest-Tundra Ecotone Using Airborne Laser Scanning
Due to expected climate change and increased focus on forests as a potential carbon sink, it is of interest to map and monitor even marginal forests where trees exist close to their tolerance limits, such as small pioneer trees in the forest-tundra ecotone. Such small trees might indicate tree line migrations and expansion of the forests into treeless areas. Airborne laser scanning (ALS) has be...
متن کاملSparse Density, Leaf-Off Airborne Laser Scanning Data in Aboveground Biomass Component Prediction
The demand for cost-efficient forest aboveground biomass (AGB) prediction methods is growing worldwide. The National Land Survey of Finland (NLS) began collecting airborne laser scanning (ALS) data throughout Finland in 2008 to provide a new high-detailed terrain elevation model. Similar data sets are being collected in an increasing number of countries worldwide. These data sets offer great po...
متن کاملLate Quaternary variations in tree cover at the northern foresttundra ecotone
[1] Accurate land cover reconstructions are essential to understanding the past and present biogeochemical and biogeophysical interactions between the land surface and atmosphere and the impacts of these interactions on climate. Here we quantitatively reconstruct late Quaternary shifts in woody cover across the Northern Hemisphere forest‐tundra ecotone, based on a synthesis of Northern Hemisphe...
متن کاملEstimation of Tree Lists from Airborne Laser Scanning Using Tree Model Clustering and k-MSN Imputation
Individual tree crowns may be delineated from airborne laser scanning (ALS) data by segmentation of surface models or by 3D analysis. Segmentation of surface models benefits from using a priori knowledge about the proportions of tree crowns, which has not yet been utilized for 3D analysis to any great extent. In this study, an existing surface segmentation method was used as a basis for a new t...
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ژورنال
عنوان ژورنال: Remote Sensing of Environment
سال: 2012
ISSN: 0034-4257
DOI: 10.1016/j.rse.2012.03.008