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Forests 2013, 4(3), 632-649; doi:10.3390/f4030632

Distribution and Variation of Forests in China from 2001 to 2011: A Study Based on Remotely Sensed Data

1,* , 1,2
1 State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China 2 School of Geography, Beijing Normal University, Beijing 100875, China 3 Satellite Environment Center, Ministry of Environmental Protection, Beijing 100094, China
* Author to whom correspondence should be addressed.
Received: 7 June 2013 / Revised: 7 July 2013 / Accepted: 15 July 2013 / Published: 2 August 2013
(This article belongs to the Special Issue Forest Restoration and Regeneration)
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Forests are one of the most important components of the global biosphere and have critical influences on the Earth’s ecological balance. Regularly updated forest cover information is necessary for various forest management applications as well as climate modeling studies. However, map products are not widely updated at continental or national scales because the current land cover products have overly coarse spatial resolution or insufficiently large training data sets. This study presents the results of forests distribution and variation information over China using Moderate Resolution Imaging Spectroradiometer (MODIS) Normalized Difference Vegetation Index (NDVI) time series data with the first layer of MODIS Land Cover Type product (MODIS LC-1). The NDVI time series histogram characteristic curves for forestland were estimated from MODIS LC-1 and MODIS NDVI time series data. Based on the differences of histograms among different forests, we obtained the 2001–2011 forests distribution for China at a spatial resolution of 500-m × 500-m. The overall accuracy of validation was 80.4%, an increase of 12.8% relative to that obtained using MODIS LC-1 data. The 2001–2011 forestland pure and mixed pixels of China accounted for an average of 33.72% of all pixels. There is a gradual increase in China’s forestland coverage during 2001–2011; however, the relationship is not statistically significant.
Keywords: China forests; forest management; distribution and variation; forests composition China forests; forest management; distribution and variation; forests composition
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Zhao, X.; Xu, P.; Zhou, T.; Li, Q.; Wu, D. Distribution and Variation of Forests in China from 2001 to 2011: A Study Based on Remotely Sensed Data. Forests 2013, 4, 632-649.

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