Agroforestry has large potential for carbon (C) sequestration while providing many economical, social, and ecological benefits via its diversified products. Airborne lidar is considered as the most accurate technology for mapping aboveground biomass (AGB) over landscape levels. However, little research in the past has been done to study AGB of agroforestry systems using airborne lidar data. Focusing on an agroforestry system in the Brazilian Amazon, this study first predicted plot-level AGB using fixed-effects regression models that assumed the regression coefficients to be constants. The model prediction errors were then analyzed from the perspectives of tree DBH (diameter at breast height)—height relationships and plot-level wood density, which suggested the need for stratifying agroforestry fields to improve plot-level AGB modeling. We separated teak plantations from other agroforestry types and predicted AGB using mixed-effects models that can incorporate the variation of AGB-height relationship across agroforestry types. We found that, at the plot scale, mixed-effects models led to better model prediction performance (based on leave-one-out cross-validation) than the fixed-effects models, with the coefficient of determination (R2) increasing from 0.38 to 0.64. At the landscape level, the difference between AGB densities from the two types of models was ~10% on average and up to ~30% at the pixel level. This study suggested the importance of stratification based on tree AGB allometry and the utility of mixed-effects models in modeling and mapping AGB of agroforestry systems.
from #Medicine via ola Kala on Inoreader http://ift.tt/1mQXYSL
via IFTTT
Αρχειοθήκη ιστολογίου
-
►
2023
(138)
- ► Φεβρουαρίου (74)
- ► Ιανουαρίου (64)
-
►
2022
(849)
- ► Δεκεμβρίου (61)
- ► Σεπτεμβρίου (74)
- ► Φεβρουαρίου (65)
-
►
2021
(2936)
- ► Δεκεμβρίου (59)
- ► Σεπτεμβρίου (180)
- ► Φεβρουαρίου (325)
-
►
2020
(1624)
- ► Δεκεμβρίου (293)
- ► Σεπτεμβρίου (234)
- ► Φεβρουαρίου (28)
-
►
2019
(13362)
- ► Δεκεμβρίου (19)
- ► Σεπτεμβρίου (54)
- ► Φεβρουαρίου (5586)
- ► Ιανουαρίου (5696)
-
►
2018
(66471)
- ► Δεκεμβρίου (5242)
- ► Σεπτεμβρίου (5478)
- ► Φεβρουαρίου (4835)
- ► Ιανουαρίου (5592)
-
►
2017
(44259)
- ► Δεκεμβρίου (5110)
- ► Σεπτεμβρίου (5105)
-
►
2016
(7467)
- ► Δεκεμβρίου (514)
- ► Σεπτεμβρίου (1038)
- ► Φεβρουαρίου (793)
-
▼
2015
(2119)
-
▼
Δεκεμβρίου
(940)
-
▼
Δεκ 30
(42)
- Toxins, Vol. 8, Pages 11: Determination of Gonyaut...
- Healthcare, Vol. 4, Pages 2: Sustainability as an ...
- Cancers, Vol. 8, Pages 4: Studies of Tumor Suppres...
- JCM, Vol. 5, Pages 4: Pathogenesis of Type 2 Epith...
- Catalysts, Vol. 6, Pages 5: Electrocatalytic Oxida...
- Materials, Vol. 9, Pages 14: Ferroelectrics under ...
- Education Sciences, Vol. 6, Pages 1: The ‘Lifebloo...
- Biliary reconstruction with or without an intraduc...
- Musculoskeletal care stratification Stratification...
- Pembrolizumab With Locally Delivered Radiation The...
- Individualized Elective Neck Irradiation Based on ...
- Deep Neuromuscular Relaxation in Patients for Thor...
- Entropy, Vol. 18, Pages 15: Thermal Characteristic...
- Remote Sensing, Vol. 8, Pages 21: Modeling and Map...
- Religions, Vol. 7, Pages 5: Religion, Race/Ethnici...
- Diagnostics, Vol. 6, Pages 3: Hepatocellular Carci...
- Membranes, Vol. 6, Pages 5: YSZ-Reinforced Alumina...
- Resources, Vol. 5, Pages 1: Typology of Options fo...
- Actuators, Vol. 5, Pages 2: Non-Resonant Magnetoel...
- Catalysts, Vol. 6, Pages 6: Hydrogenation of Levul...
- Polymers, Vol. 8, Pages 6: Crosslinked Poly(2-oxaz...
- Minerals, Vol. 6, Pages 3: Uranium-Series Disequil...
- Biomedicines, Vol. 4, Pages 1: Synthesis and Preli...
- Toxins, Vol. 8, Pages 12: Alkaloids from Veratrum ...
- Algorithms, Vol. 9, Pages 4: A Novel Complex-Value...
- Membranes, Vol. 6, Pages 4: The Effect of Micropor...
- Micromachines, Vol. 7, Pages 4: Particulate Blood ...
- New Trends in Instrumentation and Complex Techniqu...
- After Myocardial Ischemia-Reperfusion, miR-29a, an...
- IJMS, Vol. 17, Pages 47: Innovative Target Therapi...
- IJMS, Vol. 17, Pages 48: Notch Signaling in Pancre...
- IJMS, Vol. 17, Pages 45: Effect of Greenhouse Gase...
- IJMS, Vol. 17, Pages 50: Pharmacotherapy Treatment...
- Remote Sensing, Vol. 8, Pages 20: Remote Sensing B...
- Marine Drugs, Vol. 14, Pages 9: Specific Metabolit...
- Marine Drugs, Vol. 14, Pages 8: Structures and Act...
- Remote Sensing, Vol. 8, Pages 22: Mapping Fraction...
- Remote Sensing, Vol. 8, Pages 18: The Morphology, ...
- Marine Drugs, Vol. 14, Pages 7: Determination of F...
- Viruses, Vol. 8, Pages 1: Development of Novel Vac...
- Entropy, Vol. 18, Pages 16: Stochastic Reorder Poi...
- Noninvasive prenatal testing in the general obstet...
-
▼
Δεκ 30
(42)
-
▼
Δεκεμβρίου
(940)
Αναζήτηση αυτού του ιστολογίου
Τετάρτη 30 Δεκεμβρίου 2015
Remote Sensing, Vol. 8, Pages 21: Modeling and Mapping Agroforestry Aboveground Biomass in the Brazilian Amazon Using Airborne Lidar Data
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
-
Αλέξανδρος Γ. Σφακιανάκης Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,0030693260717...
-
heory of COVID-19 pathogenesis Publication date: November 2020Source: Medical Hypotheses, Volume 144Author(s): Yuichiro J. Suzuki ScienceD...
-
Alimentary Pharmacology &Therapeutics, EarlyView. https://ift.tt/2qECBIJ
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου
Σημείωση: Μόνο ένα μέλος αυτού του ιστολογίου μπορεί να αναρτήσει σχόλιο.