This paper aims to develop a new methodology for monitoring forest disturbances and regrowth using ALOS PALSAR data in tropical regions. In the study, forest disturbances and regrowth were assessed between 2007 and 2010 in Vietnam, Cambodia and Lao People's Democratic Republic. The deforestation rate in Vietnam has been among the highest in the tropics in the last few decades, and those in Cambodia and Lao are increasing rapidly. L-band ALOS PALSAR mosaic data were used for the detection of forest disturbances and regrowth, because L-band SAR intensities are sensitive to forest aboveground biomass loss. The methodology used here combines SAR data processing, which is particularly suited for change detection, forest detection and forest disturbances and regrowth detection using expectation maximization, which is closely related to fuzzy logic. A reliable training and testing database has been derived using AVNIR-2 and Google Earth images for calibration and validation. Efforts were made to apply masking areas that are likely to show different SAR backscatter temporal behaviors from the forests considered in the study, including mangroves, inundated forests, post-flooding or irrigated croplands and water bodies, as well as sloping areas and urban areas. The resulting forest disturbances and regrowth map (25-m resolution) indicates disturbance rates of −1.07% in Vietnam, −1.22% in Cambodia and −0.94% in Lao between 2007 and 2010, with corresponding aboveground biomass losses of 60.7 Tg, 59.2 Tg and 83.8 Tg , respectively. It is expected that the method, relying on free of charge data (ALOS and ALOS2 mosaics), can be applied widely in the tropics.
from #Medicine via ola Kala on Inoreader http://ift.tt/1Yqyc4M
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)
-
▼
Μαρτίου
(699)
-
▼
Μαρ 08
(59)
- Prognostic Utility of Computed Tomography Histogra...
- Attention training to pleasant stimuli in anxiety
- Computed Tomographic Pulmonary Angiographic Findin...
- Association of Quadriceps Muscle Fat With Isometri...
- Multiphase Multi-Detector Row Computed Tomography ...
- Utility of MDCT MIP Postprocessing Reconstruction ...
- Evaluating the Microcirculation of Normal Extraocu...
- Intravoxel Incoherent Motion Diffusion Weighted Ma...
- Paradoxically Decreased Mean Transit Time in Patie...
- Use of a Balloon Rectal Catheter in Magnetic Reson...
- Prognostic Utility of Computed Tomography Histogra...
- L’évaluation de la perte de chance en responsabili...
- Ballon intragastrique pour traitement de l’obésité
- Dynamic Self-Referencing Approach to Whispering Ga...
- Electrochemical Label-Free Aptasensor for Specific...
- Medical Sciences, Vol. 4, Pages 6: Targeting in Ca...
- The effect of prenatal exposure to 1800 MHz electr...
- Video-assisted ovariohysterectomy in domestic cats...
- Facial nerve identification with fluorescent dye i...
- Ultrasound biomicroscopy and claudication test for...
- Effect of ozone on colon anastomoses in rat perito...
- Effects of chitin and sepia ink hybrid sponge on t...
- Evaluation of the effect of allopurinol as a prote...
- Effect of adenosine A2A receptor antagonists on mo...
- Technique for implanting intramuscular electrodes ...
- Ellagic acid inhibits proliferation and induces ap...
- Erratum to: ‘Effectiveness of a behavioral incenti...
- A multicenter randomized controlled open-label tri...
- The functional and clinical outcomes of exercise t...
- Viruses, Vol. 8, Pages 64: Recycling Endosomes and...
- A novel DNA tetrahedron-hairpin probe for in situ ...
- Religions, Vol. 7, Pages 26: Effect of the “Spirit...
- Remote Sensing, Vol. 8, Pages 217: Forest Disturba...
- IJMS, Vol. 17, Pages 348: Molecular Cloning and Ex...
- Molecular Mechanisms Linking Autonomic Dysfunction...
- “I Always Worry about What Might Happen Ahead”: Im...
- Catalytic activity and thermal stability of horser...
- Materials, Vol. 9, Pages 179: Compositional Design...
- Chromatography, Vol. 3, Pages 9: The Simultaneous ...
- Applied Sciences, Vol. 6, Pages 76: Investigation ...
- Materials, Vol. 9, Pages 178: Effects of Ca Conten...
- Medical Sciences, Vol. 4, Pages 2: Targeting in Ca...
- Sustainability, Vol. 8, Pages 249: Subsurface Drai...
- Marine Drugs, Vol. 14, Pages 48: Antimicrobials fr...
- Forests, Vol. 7, Pages 61: Estimation of Tree Stem...
- Econometrics, Vol. 4, Pages 12: Evolutionary Seque...
- Sustainability, Vol. 8, Pages 246: A Novel Environ...
- Water, Vol. 8, Pages 90: Precipitation Intensity E...
- Cells, Vol. 5, Pages 10: Hypoxia Induced NF-κB
- Entropy, Vol. 18, Pages 87: Entropy Production in ...
- Concurrent chemoradiotherapy with elective lymph n...
- Low frequency of drug-resistant virus did not affe...
- Function and clinical implications of short-chain ...
- Antioxidant cocktail and pregabalin combination am...
- Toxins, Vol. 8, Pages 67: Perfringolysin O Theta T...
- Diversity, Vol. 8, Pages 6: Update of “Biodiversit...
- JMSE, Vol. 4, Pages 24: Effects of Exposure of Pin...
- Sensors, Vol. 16, Pages 344: Measuring Surface Pre...
- Materials, Vol. 9, Pages 176: Revealing the Dark S...
-
▼
Μαρ 08
(59)
- ► Φεβρουαρίου (793)
Αναζήτηση αυτού του ιστολογίου
Τρίτη 8 Μαρτίου 2016
Remote Sensing, Vol. 8, Pages 217: Forest Disturbances and Regrowth Assessment Using ALOS PALSAR Data from 2007 to 2010 in Vietnam, Cambodia and Lao PDR
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...
-
https://ift.tt/2MQ8Ai8
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου
Σημείωση: Μόνο ένα μέλος αυτού του ιστολογίου μπορεί να αναρτήσει σχόλιο.