Mapping Paddy Rice in China in 2002, 2005, 2010 and 2014 with MODIS Time Series | |
Clauss K.; Yan, H. M.; Kuenzer, C. | |
2016 | |
关键词 | rice China MODIS time series SVM OCSVM agriculture change detection planting area mekong delta spatiotemporal distribution cropping systems northeast china river delta images phenology fields scales |
英文摘要 | Rice is an important food crop and a large producer of green-house relevant methane. Accurate and timely maps of paddy fields are most important in the context of food security and greenhouse gas emission modelling. During their life-cycle, rice plants undergo a phenological development that influences their interaction with waves in the visible light and infrared spectrum. Rice growth has a distinctive signature in time series of remotely-sensed data. We used time series of MODIS (Moderate Resolution Imaging Spectroradiometer) products MOD13Q1 and MYD13Q1 and a one-class support vector machine to detect these signatures and classify paddy rice areas in continental China. Based on these classifications, we present a novel product for continental China that shows rice areas for the years 2002, 2005, 2010 and 2014 at 250-m resolution. Our classification has an overall accuracy of 0.90 and a kappa coefficient of 0.77 compared to our own reference dataset for 2014 and correlates highly with rice area statistics from China's Statistical Yearbooks (R-2 of 0.92 for 2010, 0.92 for 2005 and 0.90 for 2002). Moderate resolution time series analysis allows accurate and timely mapping of rice paddies over large areas with diverse cropping schemes. |
出处 | Remote Sensing |
卷 | 8 |
期 | 5 |
语种 | 英语 |
ISSN号 | 2072-4292 |
DOI标识 | 10.3390/rs8050434 |
内容类型 | SCI/SSCI论文 |
源URL | [http://ir.igsnrr.ac.cn/handle/311030/42899] |
专题 | 地理科学与资源研究所_历年回溯文献 |
推荐引用方式 GB/T 7714 | Clauss K.,Yan, H. M.,Kuenzer, C.. Mapping Paddy Rice in China in 2002, 2005, 2010 and 2014 with MODIS Time Series. 2016. |
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