NDLI: Monitoring Tropical Forest Degradation in Betampona Nature Reserve, Madagascar Using Multisource Remote Sensing Data Fusion

Content Provider	IEEE Xplore Digital Library
Author	Ghulam, A.
Copyright Year	2008
Abstract	This paper demonstrates how animal and plant species diversity in the Betampona Nature Reserve (BNR), Madagascar has become threatened through forest degradation and the introduction of invasive species over the last two decades. First, land-use changes and agricultural activities were analyzed using Landsat and IKONOS-2 data from 1990 to 2010. Then, a decision tree algorithm was developed to map under canopy invasive plant species using high resolution optical stereo imaging, land-use classification, and characterizing plant growth using Interferometric Synthetic Aperture Radar (InSAR) and polarimetric InSAR observations from Phased Array type L-band Synthetic Aperture Radar (PALSAR). Next, causal association between land use, climate change, and spatial and temporal dynamics of invasive plant species distribution was explored using satellite derived and in situ climate variables, changes in drought regimes, and tropical cyclones. Results showed that the region experienced intense land-use changes characterized by significant increase in agricultural lands at the cost of primary forest and other land-cover types. Encroachment by habitat-altering invasive plants from 2005 to 2012 within the reserve was obvious, and were probably attributable to illegal logging, erosion of the reserve boundary from anthropogenic activities and cyclone damage as well as shifts in drought regimes. The spatial extent of guava (Psidium cattleianum) has increased from 5.6% of the reserve in 2005 to 7.9% in 2012, a 55-ha increase over less than 7 years. Madagascar cardamom (Aframomum angustifolium) has increased by 1.7% and Molucca raspberry (Rubus moluccanus) by 2.3%, respectively.
Starting Page	4960
Ending Page	4971
Page Count	12
File Size	2418174
File Format	PDF
ISSN	19391404
Volume Number	7
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Remote sensing Meteorology Degradation Satellites Agriculture Forests Vegetation Data fusion remote sensing Betampona Nature Reserve (BNR) forest degradation land-use and land-cover change
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science Computers in Earth Sciences

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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