| Schumacher, P; Mislimshoeva, B; Brenning, A; Zandler, H; Brandt, M; Samimi, C; Koellner, T: Do Red Edge and Texture Attributes from High-Resolution Satellite Data Improve Wood Volume Estimation in a Semi-Arid Mountainous Region, Remote Sensing, 8(7) (2016), online: 24.06.2016, doi:10.3390/rs8070540 [Link] | |
| Stichworte: woody biomass; wood volume estimation; semi-arid; RapidEye; red edge; texture | |
| Abstract: Remote sensing-based woody biomass quantification in sparsely-vegetated areas is often limited when using only common broadband vegetation indices as input data for correlation with ground-based measured biomass information. Red edge indices and texture attributes are often suggested as a means to overcome this issue. However, clear recommendations on the suitability of specific proxies to provide accurate biomass information in semi-arid to arid environments are still lacking. This study contributes to the understanding of using multispectral high-resolution satellite data (RapidEye), specifically red edge and texture attributes, to estimate wood volume in semi-arid ecosystems characterized by scarce vegetation. LASSO (Least Absolute Shrinkage and Selection Operator) and random forest were used as predictive models relating in situ-measured aboveground standing wood volume to satellite data. Model performance was evaluated based on cross-validation bias, standard deviation and Root Mean Square Error (RMSE) at the logarithmic and non-logarithmic scales. Both models achieved rather limited performances in wood volume prediction. Nonetheless, model performance increased with red edge indices and texture attributes, which shows that they play an important role in semi-arid regions with sparse vegetation. |
Aktuelle Termine
Aktuelle Termine
| Antrittsvorlesung: |
|---|
| Mi. 22.05.2024 Funktionelle Pilzökologie: Diversität und Prozesse auf unterschiedlichen Skalen |
| BayCEER-Kolloquium: |
| Do. 06.06.2024 Tracking plant diversity dynamics on islands over thousands of years |
| Mo. 10.06.2024 Arsenic biogeochemistry from paddy soil to rice grain |
| Ökologisch-Botanischer Garten: |
| So. 19.05.2024 aktuell Führung | "Den ÖBG Kennenlernen: Allgemeine Gartenführung" |
| Mi. 29.05.2024 Führung | "Grüne Apotheke: Heilpflanzen" |