Global, 30-m resolution continuous fields of tree cover: Landsat-based rescaling of MODIS vegetation continuous fields with lidar-based estimates of error
Joseph O. Sexton,Xiao-Peng Song,Min Feng,Praveen Noojipady,Anupam Anand,Chengquan Huang,Do-Hyung Kim,K. M. Collins,Saurabh Channan,C. Dimiceli,John R. Townshend +10 more
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A global, 30-m resolution dataset of percent tree cover by rescaling the 250-m MOderate-resolution Imaging Spectroradiometer (MODIS) Vegetation Continuous Fields (VCF) Tree Cover layer using circa- 2000 and 2005 Landsat images, incorporating the MODIS Cropland Layer to improve accuracy in agricultural areas.Abstract:
We developed a global, 30-m resolution dataset of percent tree cover by rescaling the 250-m MOderate-resolution Imaging Spectroradiometer (MODIS) Vegetation Continuous Fields (VCF) Tree Cover layer using circa- 2000 and 2005 Landsat images, incorporating the MODIS Cropland Layer to improve accuracy in agricultural areas Resulting Landsat-based estimates maintained consistency with the MODIS VCF in both epochs (RMSE =86% in 2000 and 119% in 2005), but showed improved accuracy in agricultural areas and increased discrimination of small forest patches Against lidar measurements, the Landsat-based estimates exhibited accuracy slightly less than that of the MODIS VCF (RMSE=168% for MODIS-based vs 174% for Landsat-based estimates), but RMSE of Landsat estimates was 33 percentage points lower than that of the MODIS data in an agricultural region The Landsat data retained the saturation artifact of the MODIS VCF at greater than or equal to 80% tree cover but showed greater potential for removal read more
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High-Resolution Global Maps of 21st-Century Forest Cover Change
Matthew C. Hansen,Peter Potapov,Rebecca Moore,M. Hancher,Svetlana Turubanova,Alexandra Tyukavina,David Thau,Stephen V. Stehman,Scott J. Goetz,Thomas R. Loveland,Anil Kommareddy,A. Egorov,Louise Chini,Christopher O. Justice,John R. Townshend +14 more
TL;DR: Intensive forestry practiced within subtropical forests resulted in the highest rates of forest change globally, and boreal forest loss due largely to fire and forestry was second to that in the tropics in absolute and proportional terms.
Journal ArticleDOI
The biodiversity of species and their rates of extinction, distribution, and protection
Stuart L. Pimm,Clinton N. Jenkins,Robin Abell,Thomas M. Brooks,John L. Gittleman,Lucas Joppa,Peter H. Raven,Callum M. Roberts,Joseph O. Sexton +8 more
TL;DR: The biodiversity of eukaryote species and their extinction rates, distributions, and protection is reviewed, and what the future rates of species extinction will be, how well protected areas will slow extinction Rates, and how the remaining gaps in knowledge might be filled are reviewed.
Journal ArticleDOI
Habitat fragmentation and its lasting impact on Earth’s ecosystems
Nick M. Haddad,Lars A. Brudvig,Jean Clobert,Kendi F. Davies,Andrew Gonzalez,Robert D. Holt,Thomas E. Lovejoy,Joseph O. Sexton,Mike P. Austin,Cathy D. Collins,William M. Cook,Ellen I. Damschen,Robert M. Ewers,Bryan L. Foster,Clinton N. Jenkins,Andrew J. King,William F. Laurance,Douglas J. Levey,Chris Margules,Chris Margules,Brett A. Melbourne,A. O. Nicholls,A. O. Nicholls,John L. Orrock,Dan-Xia Song,John R. Townshend +25 more
TL;DR: An analysis of global forest cover is conducted to reveal that 70% of remaining forest is within 1 km of the forest’s edge, subject to the degrading effects of fragmentation, indicating an urgent need for conservation and restoration measures to improve landscape connectivity.
Supplementary Materials for Habitat fragmentation and its lasting impact on Earth's ecosystems
Nick M. Haddad,Lars A. Brudvig,Jean Clobert,Kendi F. Davies,Andrew Gonzalez,Robert D. Holt,Thomas E. Lovejoy,Joseph O. Sexton,Mike P. Austin,Cathy D. Collins,William M. Cook,Ellen I. Damschen,Robert M. Ewers,Bryan L. Foster,Clinton N. Jenkins,Andrew J. King,William F. Laurance,Douglas J. Levey,Chris R. Margules,Brett A. Melbourne,A. O. Nicholls,John L. Orrock,Dan-Xia Song,John R. Townshend +23 more
TL;DR: In this article, the authors conducted an analysis of global forest cover to reveal that 70% of remaining forest is within 1 km of the forest's edge, subject to the degrading effects of fragmentation.
Book
Habitat Suitability and Distribution Models
TL;DR: In this article, the authors introduce the key stages of niche-based habitat suitability model building, evaluation and prediction required for understanding and predicting future patterns of species and biodiversity, including the main theory behind ecological niches and species distributions.
References
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Journal Article
R: A language and environment for statistical computing.
TL;DR: Copyright (©) 1999–2012 R Foundation for Statistical Computing; permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and permission notice are preserved on all copies.
Book
C4.5: Programs for Machine Learning
TL;DR: A complete guide to the C4.5 system as implemented in C for the UNIX environment, which starts from simple core learning methods and shows how they can be elaborated and extended to deal with typical problems such as missing data and over hitting.
Journal ArticleDOI
Terrestrial Ecoregions of the World: A New Map of Life on Earth
Journal ArticleDOI
On the Theory of Scales of Measurement
TL;DR: The current issues will remain at 32 pages until a more adequate supply of paper is assured, due to a shortage of paper for Bacto-Agar research.
Journal ArticleDOI
Some Comments on the Evaluation of Model Performance
TL;DR: In this article, it is suggested that the correlation between model-predicted and observed data, commonly described by Pearson's productmoment correlation coefficient, is an insufficient and often misleading measure of accuracy, and a complement of difference and summary univariate indices is presented as the nucleus of a more informative, albeit fundamentally descriptive, approach to model evaluation.