TY - JOUR
T1 - Inconsistent estimates of forest cover change in China between 2000 and 2013 from multiple datasets
T2 - Differences in parameters, spatial resolution, and definitions
AU - Li, Yan
AU - Sulla-Menashe, Damien
AU - Motesharrei, Safa
AU - Song, Xiao Peng
AU - Kalnay, Eugenia
AU - Ying, Qing
AU - Li, Shuangcheng
AU - Ma, Zongwen
N1 - Funding Information:
This work was supported by the Maryland Council on the Environment 2014 seed grant (award No. 1357928) and the National Natural Science Foundation of China (Nos 41130534 and 41371096). We gratefully acknowledge the support of NASA grant NNX15AE44G. Y.L. was supported by the China Scholarship Council fellowship (No. 201306010169).
Funding Information:
This work was supported by the Maryland Council on the Environment 2014 seed grant (award No. 1357928) and the National Natural Science Foundation of China (Nos 41130534 and 41371096). We gratefully acknowledge the support of NASA grant NNX15AE44G. Y.L. was supported by the China Scholarship Council fellowship (No.
Publisher Copyright:
© 2017 The Author(s).
PY - 2017/12/1
Y1 - 2017/12/1
N2 - The Chinese National Forest Inventory (NFI) has reported increased forest coverage in China since 2000, however, the new satellite-based dataset Global Forest Change (GFC) finds decreased forest coverage. In this study, four satellite datasets are used to investigate this discrepancy in forest cover change estimates in China between 2000 and 2013: forest cover change estimated from MODIS Normalized Burn Ratio (NBR), existing MODIS Land Cover (LC) and Vegetation Continuous Fields (VCF) products, and the Landsat-based GFC. Among these satellite datasets, forest loss shows much better agreement in terms of total change area and spatial pattern than do forest gain. The net changes in forest cover as a proportion of China's land area varied widely from increases of 1.56% in NBR, 1.93% in VCF, and 3.40% in LC to a decline of -0.40% in GFC. The magnitude of net forest increase derived from MODIS datasets (1.56-3.40%) is lower than that reported in NFI (3.41%). Algorithm parameters, different spatial resolutions, and inconsistent forest definitions could be important sources of the discrepancies. Although several MODIS datasets support an overall forest increase in China, the direction and magnitude of net forest change is still unknown due to the large uncertainties in satellite-derived estimates.
AB - The Chinese National Forest Inventory (NFI) has reported increased forest coverage in China since 2000, however, the new satellite-based dataset Global Forest Change (GFC) finds decreased forest coverage. In this study, four satellite datasets are used to investigate this discrepancy in forest cover change estimates in China between 2000 and 2013: forest cover change estimated from MODIS Normalized Burn Ratio (NBR), existing MODIS Land Cover (LC) and Vegetation Continuous Fields (VCF) products, and the Landsat-based GFC. Among these satellite datasets, forest loss shows much better agreement in terms of total change area and spatial pattern than do forest gain. The net changes in forest cover as a proportion of China's land area varied widely from increases of 1.56% in NBR, 1.93% in VCF, and 3.40% in LC to a decline of -0.40% in GFC. The magnitude of net forest increase derived from MODIS datasets (1.56-3.40%) is lower than that reported in NFI (3.41%). Algorithm parameters, different spatial resolutions, and inconsistent forest definitions could be important sources of the discrepancies. Although several MODIS datasets support an overall forest increase in China, the direction and magnitude of net forest change is still unknown due to the large uncertainties in satellite-derived estimates.
UR - http://www.scopus.com/inward/record.url?scp=85027892164&partnerID=8YFLogxK
U2 - 10.1038/s41598-017-07732-5
DO - 10.1038/s41598-017-07732-5
M3 - Article
C2 - 28821759
AN - SCOPUS:85027892164
VL - 7
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
IS - 1
M1 - 8748
ER -