A Circa 2010 Thirty Meter Resolution Forest Map for China
This study examines the suitability of 30 m Landsat Thematic Mapper (TM), 250 m time-series Moderate Resolution Imaging Spectrometer (MODIS) Enhanced Vegetation Index (EVI) and other auxiliary datasets for mapping forest extent in China at 30 m resolution circa 2010. We calculated numerous spectral...
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doaj-bbe731732c9346b8bd677d4b9b77ca222020-11-25T00:20:40ZengMDPI AGRemote Sensing2072-42922014-06-01665325534310.3390/rs6065325rs6065325A Circa 2010 Thirty Meter Resolution Forest Map for ChinaCongcong Li0Jie Wang1Luanyun Hu2Le Yu3Nicholas Clinton4Huabing Huang5Jun Yang6Peng Gong7State Key Laboratory of Remote Sensing Science, and College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, ChinaState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, ChinaMinistry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Tsinghua University, Beijing 100084, ChinaMinistry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Tsinghua University, Beijing 100084, ChinaMinistry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, ChinaMinistry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, ChinaThis study examines the suitability of 30 m Landsat Thematic Mapper (TM), 250 m time-series Moderate Resolution Imaging Spectrometer (MODIS) Enhanced Vegetation Index (EVI) and other auxiliary datasets for mapping forest extent in China at 30 m resolution circa 2010. We calculated numerous spectral features, EVI time series, and topographical features that are helpful for forest/non-forest distinction. In this research, extensive efforts have been made in developing training samples over difficult to map or complex regions. Scene by scene quality checking was done on the initial forest extent results and low quality results were refined until satisfactory. Based on the forest extent mask, we classified the forested area into 6 types (evergreen/deciduous broadleaf, evergreen/deciduous needleleaf, mixed forests, and bamboos). Accuracy assessment of our forest/non-forest classification using 2195 test sample units independent of the training sample indicates that the producer’s accuracy (PA) and user’s accuracy (UA) are 92.0% and 95.7%, respectively. According to this map, the total forested area in China was 164.90 million ha (Mha) circa 2010. It is close to the forest area of 7th National Forest Resource Inventory with the same definition of forest. The overall accuracy for the more detailed forest type classification is 72.7%.http://www.mdpi.com/2072-4292/6/6/5325classificationMODISTMforest extentforest type |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Congcong Li Jie Wang Luanyun Hu Le Yu Nicholas Clinton Huabing Huang Jun Yang Peng Gong |
spellingShingle |
Congcong Li Jie Wang Luanyun Hu Le Yu Nicholas Clinton Huabing Huang Jun Yang Peng Gong A Circa 2010 Thirty Meter Resolution Forest Map for China Remote Sensing classification MODIS TM forest extent forest type |
author_facet |
Congcong Li Jie Wang Luanyun Hu Le Yu Nicholas Clinton Huabing Huang Jun Yang Peng Gong |
author_sort |
Congcong Li |
title |
A Circa 2010 Thirty Meter Resolution Forest Map for China |
title_short |
A Circa 2010 Thirty Meter Resolution Forest Map for China |
title_full |
A Circa 2010 Thirty Meter Resolution Forest Map for China |
title_fullStr |
A Circa 2010 Thirty Meter Resolution Forest Map for China |
title_full_unstemmed |
A Circa 2010 Thirty Meter Resolution Forest Map for China |
title_sort |
circa 2010 thirty meter resolution forest map for china |
publisher |
MDPI AG |
series |
Remote Sensing |
issn |
2072-4292 |
publishDate |
2014-06-01 |
description |
This study examines the suitability of 30 m Landsat Thematic Mapper (TM), 250 m time-series Moderate Resolution Imaging Spectrometer (MODIS) Enhanced Vegetation Index (EVI) and other auxiliary datasets for mapping forest extent in China at 30 m resolution circa 2010. We calculated numerous spectral features, EVI time series, and topographical features that are helpful for forest/non-forest distinction. In this research, extensive efforts have been made in developing training samples over difficult to map or complex regions. Scene by scene quality checking was done on the initial forest extent results and low quality results were refined until satisfactory. Based on the forest extent mask, we classified the forested area into 6 types (evergreen/deciduous broadleaf, evergreen/deciduous needleleaf, mixed forests, and bamboos). Accuracy assessment of our forest/non-forest classification using 2195 test sample units independent of the training sample indicates that the producer’s accuracy (PA) and user’s accuracy (UA) are 92.0% and 95.7%, respectively. According to this map, the total forested area in China was 164.90 million ha (Mha) circa 2010. It is close to the forest area of 7th National Forest Resource Inventory with the same definition of forest. The overall accuracy for the more detailed forest type classification is 72.7%. |
topic |
classification MODIS TM forest extent forest type |
url |
http://www.mdpi.com/2072-4292/6/6/5325 |
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